Generated by All in One SEO Pro v5.0.1.1, this is an llms.txt file, used by LLMs to index the site. # Electrical School Your Career as an Electrician ## Sitemaps - [XML Sitemap](https://electricalschool.org/sitemap.xml): Contains all public & indexable URLs for this website. ## Posts - [Blog](https://electricalschool.org/blog/) - [Studying Electrical Technology at San Joaquin Valley College](https://electricalschool.org/studying-electrical-technology-at-san-joaquin-valley-college/) - Studying Electrical Technology at San Joaquin Valley College The Electrical Technology program at San Joaquin Valley College prepares its students in technical understanding, troubleshooting, electrical terminology, and math to a level equivalent to an electrician with four years of experience. The student should therefore be prepared Journeyman’s test. Search Electrician ProgramsGet information on Electrician programs - [Electrician Training at Intercoast College](https://electricalschool.org/electrician-training-at-intercoast-college/) - Intercoast College Electrician Training Electrician careers are growing in the United States today. In fact, according to Projections Central, the profession should expect to see significant growth between 2018 and 2028, to the tune of 10.4 percent, or 74,100 new jobs. This data suggest that new electricians entering the field can expect a long and stable - [Los Angeles Trade and Technical College](https://electricalschool.org/los-angeles-trade-and-technical-college/) - A Head Start for Your Electrician Career at Los Angeles Trade and Technical College If you’re looking for a secure career where you’re doing hands-on work, you might consider becoming an electrician. Electrical jobs in the U.S. are forecast to grow over the next decade—by 2029, the U.S. Bureau of Labor Statistics projects they’ll grow - [Find an Electrician College in San Diego](https://electricalschool.org/find-an-electrician-college-in-san-diego/) - Electrician Programs in the San Diego Area If you've recently made the decision to become an electrician, you can rest assured that you've made a practical choice for your future. In fact, the electrician trade is currently growing in California, with Projections Central predicting an increase of 10.4 percent (or 74,100 new jobs) between 2018 and 2028. - [Electrician Programs in Sacramento, California](https://electricalschool.org/electrician-programs-in-sacramento-california/) - Electrician Programs in Sacramento, California Making a decision about your future career isn't easy, but if you are considering becoming an electrician, you should know that the trade holds a lot of potential. Not only do electricians in Sacramento make a good living wage (the average in 2019 was $59,540, according to the Bureau of Labor - [Where to Study in Los Angeles](https://electricalschool.org/electrician-programs-in-los-angeles/) - Electrician Programs in Los Angeles If you live in the Los Angeles area and are considering a career as an electrician, you might be looking to find out more about the profession and the training you will need to undertake. Most people who are considering a new career will want to know whether their choice - [Studying to Become an Electrician at Southern California Institute of Technology](https://electricalschool.org/studying-to-become-an-electrician-at-southern-california-institute-of-technology/) - The SCIT Electrical Program Electricians perform an essential service, designing, installing and repairing the systems that bring electrical power to our homes and workplaces. For the user, electricity is like magic, but electricians deliver it to us safely and effectively in accordance with strict regulatory guidelines. One of the best ways to start your electrician - [5 Electrical Safety Tips for HVAC Technicians](https://electricalschool.org/5-electrical-safety-tips-for-hvac-technicians/) - You need to have a bit of experience with circuitry, electricity, and wiring, to be able to handle the installation and maintenance of an HVAC system - [Best Associate Degree Programs For Tomorrow's Electricians of Chicago](https://electricalschool.org/best-associate-degree-programs-for-tomorrows-electricians-of-chicago/) - Electrician jobs are expected to rise 9% by 2030. To be accredited, you will need to learn the required skills at an electrician school in Chicago - [Best Electrical Apprenticeship Programs in Chicago](https://electricalschool.org/best-electrical-apprenticeship-programs-in-chicago/) - In considering an electrical apprenticeship in Chicago, you need to find a school that will provide sound training and a leg-up to your first electrician job. - [Studying Electrical Technology at Mineral Area College](https://electricalschool.org/studying-electrical-technology-at-mineral-area-college/) - The Associate's degree in electrical technology at Mineral Area College in Park Hills, Missouri trains students for a lifelong career in electrical technology. - [Becoming an Electrician in St. Louis](https://electricalschool.org/becoming-an-electrician-in-st-louis/) - Home to the booming aerospace, chemical manufacturing, and beer industries, St. Louis, Missouri is the perfect place to pursue being an Electrician. - [Electrical Apprenticeship Programs at Kansas City Electrical KCJATC](https://electricalschool.org/electrical-apprenticeship-programs-at-kansas-city-electrical-kcjatc/) - If you live in the Kansas City area, look no further than Kansas City Electrical Joint Apprenticeship and Training Committee. Read on to find out what KCJATC. - [Electrician Training in the Seattle Area: Bates vs Renton](https://electricalschool.org/electrician-training-in-the-seattle-area-bates-vs-renton/) - There are two schools that should come to mind when selecting a technical college for electrician training in Seattle, Washington: Bates and Renton. - [Best Electrician Apprenticeship Programs in Washington State](https://electricalschool.org/best-electrician-apprenticeship-programs-in-washington-state/) - On this page you will learn more about the best apprenticeship programs in Washington state so that you can choose the right electrician course for you. - [Electrician Training: Detroit Training Institute of Technology vs SEMCA](https://electricalschool.org/electrician-training-detroit-training-institute-of-technology-vs-semca/) - Students interested in beginning a career in the electricity industry will benefit massively from electrical training. - [What Are the Best Michigan Electrical Apprenticeship Programs?](https://electricalschool.org/what-are-the-best-michigan-electrical-apprenticeship-programs/) - Completing an electrical apprenticeship in Michigan is an essential first step to becoming an electrician in the state. But with so many options available, choosing the best program can seem daunting. - [What Are the Best Training Options for Electricians in Long Island?](https://electricalschool.org/what-are-the-best-training-options-for-electricians-in-long-island/) - If you are looking for electrical training in Long Island, you're in the right place. In this brief guide, we have highlighted two of the top local teaching centers that can help you deepen your understanding of your craft. - [Where Can I Train as an Electrician in Westchester County?](https://electricalschool.org/where-can-i-train-as-an-electrician-in-westchester-county/) - Looking for electrician training in Westchester County? There aren't actually any trade schools in Westchester County, NY, but there are alternatives - [Where Can I Find Electrician Training Near Syracuse, NY?](https://electricalschool.org/where-can-i-find-electrician-training-near-syracuse-ny/) - Find the best programs for potential electricians in Syracuse and central New York state. If you're ready to take this journey, here's what you need to know. - [Continuing Education Options for Electricians in Connecticut](https://electricalschool.org/continuing-education-options-for-electricians-in-connecticut/) - While every electrician has to put their time in and attend school to learn their trade, it's also essential to stay current on the industry's latest technology and new ways of working with electrical wiring. - [The Best Electrician Apprenticeship Programs in Connecticut](https://electricalschool.org/the-best-electrician-apprenticeship-programs-in-connecticut/) - Here are some apprenticeship programs in CT that are either union or non-union. Either way, these apprenticeships will offer the training and experience you need for success. - [Studying Electrical Technology at Virginia Highlands Community College](https://electricalschool.org/studying-electrical-technology-at-virginia-highlands-community-college/) - Thinking about studying Electrical Technology at Virginia Highlands Community College? We couldn't be more excited for you! - [The Best Electrician Diploma Programs in Virginia](https://electricalschool.org/the-best-electrician-diploma-programs-in-virginia/) - Looking for a stable career with great opportunities for growth? With so many people invested in technology, the demand for skilled electricians is rising. - [How to Get on an Electrical Apprenticeship Program in Virginia](https://electricalschool.org/how-to-get-on-an-electrical-apprenticeship-program-in-virginia/) - If there's a career that will never go out of style, it's being an electrician. Statistics show that this well-paying industry only continues to grow. - [Best Electrical Apprentice Programs in Cleveland, Ohio](https://electricalschool.org/best-electrical-apprentice-programs-in-cleveland-ohio/) - There is a lot to consider when applying to a school, from courses to affordability or whether you want to enroll in a union or non-union program. - [Best Electrician Training in Columbus, Ohio](https://electricalschool.org/best-electrician-training-in-columbus-ohio/) - Are you eager to find the best electrician school in Columbus, OH? Fortunately, there are plenty of ways you can train to become a professional electrician or engineer in this city. - [Electrical Training Options in Cincinnati](https://electricalschool.org/electrical-training-options-in-cincinnati/) - Finding the right electrician school in Cincinnati is integral to taking the next step in your career. However, you might be feeling a little lost about where to go. - [Studying Electrical Engineering Technology at the University of Arkansas](https://electricalschool.org/studying-electrical-engineering-technology-at-the-university-of-arkansas/) - The University of Arkansas electrician program is considered one of the best in the country. With almost seven thousand students attending the institution as a whole each semester, this school offers also offers a large student body and esteemed faculty. - [Why Study Construction Technology at NWACC](https://electricalschool.org/why-study-construction-technology-at-nwacc/) - Ready to start working towards your dream career in construction technology? NWACC has a program right for you. - [How to Renew Your Massachusetts Electrical License](https://electricalschool.org/how-to-renew-your-massachusetts-electrical-license/) - Here's what you need to know about the Mass electrician license requirements and renewal process. - [Where to Study Electrical Engineering in Boston](https://electricalschool.org/where-to-study-electrical-engineering-in-boston/) - Electrical engineers are more needed than ever across various industries, including communications, aerospace, healthcare, defense, and more. - [Electrical Apprenticeships in Tampa](https://electricalschool.org/electrical-apprenticeships-in-tampa/) - Are you ready to start a Tampa electrician apprenticeship? This is a life-changing decision that requires thorough research before applying for any programs. - [Where Can I Get Electrician Training in Orlando?](https://electricalschool.org/where-can-i-get-electrician-training-in-orlando/) - There are plenty of trade schools in Orlando, FL, but knowing which one is the best match for your ambitions can be difficult. With that in mind, we are sharing two of the best courses in Orlando for aspiring electricians. - [Where to Find an Electrical Apprenticeship in Dallas](https://electricalschool.org/where-to-find-an-electrical-apprenticeship-in-dallas/) - If interested in becoming a union worker, then check out the North Texas Electrical JATC. If you prefer to be an independent contractor, then IEC Dallas gives you this option. - [Best Electrician Programs in Houston](https://electricalschool.org/best-electrician-programs-in-houston/) - Want to get enrolled in the best electrician program in Houston? Follow our guide to discover where you should be learning your trade. - [Electrical Technology Diploma Programs in Minneapolis](https://electricalschool.org/electrical-technology-diploma-programs-in-minneapolis/) - When choosing where to study to become an electrician, the choice lies in what your career endgame is. Some schools suit consistent, reliable work. Some schools suit high-flyers with a maverick edge. - [Best Electrical Degree Programs in Minneapolis](https://electricalschool.org/best-electrical-degree-programs-in-minneapolis/) - Choosing the best accredited electrical school in Minneapolis can be difficult. Here we provide clarity on which electrical program in Minneapolis is best for your needs. - [Electrical Apprenticeship Programs in Minneapolis](https://electricalschool.org/electrical-apprenticeship-programs-in-minneapolis/) - In this guide, we compare the union electrician apprenticeship offered by Minneapolis Electrical JATC and the non-union Associated Builders and Contractors, Inc. program in Eden Prairie. - [What are the Best Electrical Apprenticeship Programs in Raleigh, NC?](https://electricalschool.org/what-are-the-best-electrical-apprenticeship-programs-in-raleigh-nc/) - Are you eager to acquire the skills you need for a lifelong career as an electrician in Raleigh, NC? There are dozens of quality programs to choose from across the city, each with its own unique structure and benefits. - [Studying to Become an Electrician in Asheville, NC](https://electricalschool.org/studying-to-become-an-electrician-in-asheville-nc/) - There are numerous routes to becoming an electrician, but one good way is through a community college program. - [What Trade Schools are there in Fayetteville, NC?](https://electricalschool.org/what-trade-schools-are-there-in-fayetteville-nc/) - Here's what you need to know about both trade schools in Fayetteville, NC, so you can decide which is best for your career goals. - [Where Can I Find an Electrician Apprenticeship Program in Indianapolis?](https://electricalschool.org/where-can-i-find-an-electrician-apprenticeship-program-in-indianapolis/) - There are many things to consider if you’re looking into apprenticeship programs in Indianapolis. One of the more significant lingering questions you might have is whether you should take a union vs. non-union apprenticeship. - [Which is the Best for Electrical Technology in Indianapolis? Ivy Tech or Lincoln Tech](https://electricalschool.org/which-is-the-best-for-electrical-technology-in-indianapolis-ivy-tech-or-lincoln-tech/) - Are you ready to start an apprenticeship program in Indianapolis but don't know which one to choose? This is an important decision that requires thorough research before applying to a program - [Where Can I Study HVAC in Indianapolis?](https://electricalschool.org/where-can-i-study-hvac-in-indianapolis/) - Want to start your career in the skilled trades by studying HVAC in Indianapolis, Indiana? The first step is enrolling in a suitable HVAC school in the area. - [Where Can I Study To Become An Electrician In Pittsburgh?](https://electricalschool.org/where-can-i-study-to-become-an-electrician-in-pittsburgh/) - Are you ready to pursue a career as an electrician in Pittsburgh? You've made a huge step forward just by making this decision alone. - [Studying Electrical Technology at Pennsylvania College of Technology](https://electricalschool.org/studying-electrical-technology-at-pennsylvania-college-of-technology/) - After completing a Pennsylvania College of Technology degree, students are well-equipped and hold the tools necessary to succeed in the industry. - [The 3 Best Electrician Programs in Philadelphia](https://electricalschool.org/the-3-best-electrician-programs-in-philadelphia/) - Are you considering a career as an electrician in Philadelphia? The good news is that you're entering into a field that's always in demand. - [Best Electrician Apprenticeship Programs in Reno, Nevada](https://electricalschool.org/best-electrician-apprenticeship-programs-in-reno-nevada/) - If you're interested in becoming an electrician, the best way to start your career is to partake in a Reno electrician apprenticeship. - [What are the Best Places to Study Electrical Technology in Las Vegas?](https://electricalschool.org/what-are-the-best-places-to-study-electrical-technology-in-las-vegas/) - The field of electrical technology is truly vibrant in a city like Las Vegas that relies on hundreds of thousands of lights and electrical systems. - [Where Can I Study HVAC in Las Vegas?](https://electricalschool.org/where-can-i-study-hvac-in-las-vegas/) - There are several Las Vegas HVAC schools to choose from making the decision of where to study difficult. - [Where to Study HVAC in South Carolina?](https://electricalschool.org/where-to-study-hvac-in-south-carolina/) - The technical skills required to work as an HVAC technician are always in demand. If you're a South Carolina resident wanting to study the trade, you have a few schooling options. - [Studying Electronic Engineering Technology at Piedmont Technical College](https://electricalschool.org/studying-electronic-engineering-technology-at-piedmont-technical-college/) - If you enjoy learning what makes your electronics tick and making them run efficiently, a career as an electronic engineering technician may be the perfect career path for you. - [Finding an Apprenticeship in South Carolina](https://electricalschool.org/finding-an-apprenticeship-in-south-carolina/) - Many apprenticeships in South Carolina can help you take your career to the next level. In this post, we will be taking you through three of the best. - [Charging Ahead: How to Select the Perfect Online Electrical Engineering Program](https://electricalschool.org/unlocking-opportunities-exploring-online-electrical-engineering-degrees/) - Discover the benefits &challenges of online electrical engineering programs, and find the right program for you. From accreditation to specialization options. - [Best Electrical Engineering Degrees: a Comprehensive Guide to Top Programs](https://electricalschool.org/best-electrical-engineering-degrees-a-comprehensive-guide-to-top-programs/) - Explore criteria for evaluating programs, top universities, specializations, industry connections, and career opportunities in this dynamic field. - [Current Innovations: How a Bachelor’s in Electrical Engineering Opens Doors](https://electricalschool.org/bachelors-degrees-in-electrical-engineering-unlocking-career-opportunities/) - Discover Top Universities like MIT, Stanford, and UC Berkeley. Learn about Career Paths and Emerging Fields in Electrical Engineering. - [Unlock Your Career Potential with a Masters Degree in Electrical Engineering](https://electricalschool.org/unlock-your-career-potential-with-a-masters-degree-in-electrical-engineering/) - Gain specialized expertise, enhance career prospects, and lead cutting-edge projects with a Master's degree in Electrical Engineering. Explore more! - [The Ultimate Guide to Achieving a PhD in Electrical Engineering](https://electricalschool.org/unlocking-the-path-to-a-phd-in-electrical-engineering-an-in-depth-guide/) - Discover the journey to obtaining a PhD in Electrical Engineering, from program structure to career opportunities and recommended programs. - [Exploring the Course Structure of Electrical Engineering Programs](https://electricalschool.org/exploring-the-course-structure-of-electrical-engineering-programs/) - Discover the core concepts, mathematics, and year-by-year breakdown of courses in electrical engineering programs. Gain insights into electives, labs, etc. - [Studying to Become An Electrician at Irvine Valley College](https://electricalschool.org/studying-to-become-an-electrician-at-irvine-valley-college/) - Studying to Become An Electrician at Irvine Valley College Electricians play an integral role in making modern society work, harnessing the powerful and dangerous force of electricity to safely bring modern convenience to our homes and efficiency to our workplaces. This incredibly skilled role requires years of dedication to learning the trade, but at the - [Electrician Training at CET San Jose, CA](https://electricalschool.org/cet-san-jose-ca/) - Electricians provide an essential service, planning, installing and repairing the fundamental systems. A good place to begin your training is at the Center for Employment Training in San Jose. - [Electrical Training at CITC Bellevue](https://electricalschool.org/electrical-training-at-citc-bellevue/) - The apprenticeship programs at CITC Bellevue provide formal, on-the-job training in Bellevue, Washington without the high costs of tuition. - [Best Electrician Programs in Detroit: Dorsey Business Schools — Dearborn vs. Henry Ford College](https://electricalschool.org/best-electrician-programs-in-detroit-dorsey-business-schools-dearborn-vs-henry-ford-college/) - Working as an electrician is a very rewarding career path. However, you will need to receive the best training possible to earn a living and provide enticing services to clients. - [Studying to Become an Electrician at City Colleges of Chicago](https://electricalschool.org/studying-to-become-an-electrician-at-city-colleges-of-chicago/) - There are many educational and training paths you can take to become an electrician in Chicago. One of the most effective ways is to earn an Associate of Applied Science (AAS) in Electrical Construction Technology from City Colleges. - [Jersey City Electrician Apprenticeships — Jersey City JATC](https://electricalschool.org/jersey-city-electrician-apprenticeships-jersey-city-jatc/) - If you're looking for trade schools in New Jersey that will train you for work as an electrician or in the construction trade in general, Jersey City has a few great options to choose from. - [Training for Electricians in Ocean County: OCVTS](https://electricalschool.org/training-for-electricians-in-ocean-county-ocvts/) - Considering becoming a licensed electrician in New Jersey? Finding the best electrician schools in Ocean County is the first step on your journey. Read on to discover your options. - [New Jersey Electrician Training: HoHokus vs. Lincoln Tech](https://electricalschool.org/new-jersey-electrician-training-hohokus-vs-lincoln-tech/) - Are you looking for electrical apprenticeships in New Jersey? This is no surprise as the demand for well-trained electricians is growing. The first step to becoming a great electrician is possessing the right qualities and skills. - [What Are the Best Electrician Apprenticeships in Massachusetts?](https://electricalschool.org/what-are-the-best-electrician-apprenticeships-in-massachusetts/) - There are two major certification programs for aspiring electricians in Massachusetts: the IBEW Union Electrical Apprenticeship and the IEC of New England non-union Apprenticeship. - [Where Can I Get Electrician Training in Knoxville, TN?](https://electricalschool.org/where-can-i-get-electrician-training-in-knoxville-tn/) - We've gathered some information on three great program choices for electrician training in Knoxville to help you learn what each institution offers and decide which school is best for your career. - [What Trade School Electrician Programs Are There in Nashville?](https://electricalschool.org/what-trade-school-electrician-programs-are-there-in-nashville/) - Choosing between the electrician schools in Nashville is a weighted decision, and there are several factors that might influence your choice. - [Electrician Schools Near San Francisco](https://electricalschool.org/electrician-schools-near-san-francisco/) - Electrician Schools Near San Francisco Deciding to train as an electrician is a big step toward future career stability. With electrical careers expected to grow in the United States in the next 10 years, by a respectable 10.4 percent (or 74,100 new jobs), you can feel confident about the step you are taking. But what does it - [Little Rock's Best Electrician Apprenticeships](https://electricalschool.org/little-rocks-best-electrician-apprenticeships/) - Are you looking for an electrical apprenticeship in Little Rock? You're in the right place. In this post, we will take you through two of the top programs in Little Rock. - [What are the Best Apprenticeship Programs in Nashville?](https://electricalschool.org/what-are-the-best-apprenticeship-programs-in-nashville/) - Looking for an electrical apprenticeship in Nashville, TN? Tennessee has some amazing paid apprenticeships available, especially in Nashville. - [Can Electricians Wear Steel Toe Boots?](https://electricalschool.org/can-electricians-wear-steel-toe-boots/) - Discover if steel toe boots are safe for electricians and find the best protective footwear for electrical work. Expert guide here. - [Electrician Training Baldwin Park Adult Community Education](https://electricalschool.org/electrician-training-baldwin-park-adult-community-education/) - Beginning Your Career as an Electrician with Baldwin Park Adult Community Education Society will always need electricians to design and build new electrical systems and to repair existing ones. Unlike many other workers whose roles can be moved to a remote location, electricians will always be needed in our communities. Search Electrician ProgramsGet information on - [Lincoln Tech vs. Porter and Chester: Which is Best for Electrician Training in CT?](https://electricalschool.org/lincoln-tech-vs-porter-and-chester-which-is-best-for-electrician-training-in-ct/) - Choosing the right electrician school in CT can shape your future career as a professional electrician. - [The Five Best Places for Electrician Training in Miami](https://electricalschool.org/the-five-best-places-for-electrician-training-in-miami/) - The Best Colleges for Education Training Programs in Miami If you’re looking for a secure career performing services that are essential in every community, you might consider becoming an electrician. Electricians design, install and maintain the systems that bring electrical power to each room, safely, reliably and efficiently. Search Electrician ProgramsGet information on Electrician programs - [Limit Switch](https://electricalschool.org/limitswitch/) - Limit Switch Definition: A protective device used to open or close electrical circuits when certain limits, such as temperature or pressure, are reached. Related Links Limit switch - Wikipedia Overview of Limit Switches Technical Guide for Limit Switches | OMRON Industrial Automation CNC Machinist Training Related Videos What is a Limit Switch? View More Furnace - [How to Become a Lineman in Texas](https://electricalschool.org/how-to-become-a-lineman-in-texas/) - Texas produces almost a third of wind electricity in the United States, so it is home to a booming industry. - [Bias Current](https://electricalschool.org/biascurrent/) - Bias Current Definition: The current used as a bias quantity in a biased relay. Related Links Biasing - Wikipedia What’s All This Bias Current Stuff, Anyhow? | Electronic Design What you need to know about input bias current – and why - Analog Wire - Blogs - TI E2E Community What's all this "input bias - [PCC](https://electricalschool.org/pcc/) - PCC Definition: Point of Common Coupling. Related Links [TITLE] Point of common coupling (PCC) voltage control of a grid-connected solar photovoltaic (PV) system - IEEE Conference Publication Ask the Experts: What Makes a PCC a PCC? | Electrical Construction & Maintenance (EC&M) Magazine IEC 60050 - International Electrotechnical Vocabulary - Details for IEV number 161-07-15: - [Intermediate Class Arrester](https://electricalschool.org/intermediateclassarrester/) - Intermediate Class Arrester Definition: Surge arresters with a high energy handling capability. These are generally voltage classed at 3-120kV. Related Links [TITLE] Complete overview of lightning arresters (part 2) NEMA Arresters » Understanding the Arrester Datasheet Medium Voltage Surge Arresters | HPS | Hammond Power Solutions The resource cannot be displayed Arrest Your Lightning Protection - [Rated Lamp Life](https://electricalschool.org/ratedlamplife/) - Rated Lamp Life Definition: With regard to lighting, the point in time when 50% of a statistically significant number of lamps has failed. Related Links What Does Average Rated Life Mean? | Lighting Basics | Bulbs.com 404 Not Found Light Bulb Average Rated Life Time Hours - The Lightbulb Co. What is Average Rated Life - [Operating Current (of a relay)](https://electricalschool.org/operatingcurrentofarelay/) - Operating Current (of a relay) Definition: The current at which a relay will pick up. Related Links [TITLE] How to interpret voltage/current for relay? - Electrical Engineering Stack Exchange How Relays Work | Relay diagrams, relay definitions and relay types The Basics of Current-Sensing Relays | Electrical Construction & Maintenance (EC&M) Magazine Low current relay - [LDD](https://electricalschool.org/ldd/) - LDD Definition: Luminaire Dirt Depreciation Factor Related Links The resource cannot be displayed Luminaire Dirt Depreciation - STANDARD Light Guide: Light Loss Factors 406 - Client browser does not accept the MIME type of the requested page. [TITLE] Light Output Declines with Time - Madison Gas and Electric - Madison, Wisconsin Designing Lighting Systems for - [Luminaire Dirt Depreciation Factor (LDD)](https://electricalschool.org/luminairedirtdepreciationfactorldd/) - Luminaire Dirt Depreciation Factor (LDD) Definition: The multiplier used in luminance calculations to relate the initial luminance provided by clean, new luminaries to the reduced luminance that they will provide due to dirt collection on the luminaries at the time at which it is anticipated that cleaning p Related Links The resource cannot be displayed - [Luminaire Dirt Depreciation (LDD)](https://electricalschool.org/luminairedirtdepreciationldd/) - Luminaire Dirt Depreciation (LDD) Definition: The accumulation of dirt on luminaires results in a loss of light output on the road. This loss is known as the LDD factor and is determined by estimating the dirt category from the graph below. From the appropriate dirt condition curve and the proper e Related Links The resource - [Apparent Power (volt-amps)](https://electricalschool.org/apparentpowervolt-amps/) - Apparent Power (volt-amps) Definition: The product of the applied voltage and current in an ac circuit. Apparent power, or volt-amps, is not the true power of the circuit because the power factor is not considered in the calculation. Related Links True, Reactive, and Apparent Power | Power Factor | Electronics Textbook Volt-ampere reactive - Wikipedia - [Non-cutoff (Lighting)](https://electricalschool.org/non-cutofflighting/) - Non-cutoff (Lighting) Definition: Luminaire light distribution is classified as non-cutoff when there is no candlepower limitation in the zone above max candlepower. 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It provides the necessary circuit conditions (voltage, current and wave form) for start Related Links Electrical ballast - Wikipedia What is a ballast? | Adaptable Ballasts | - [GF](https://electricalschool.org/gf/) - GF Definition: Ground Fault Related Links How to Install a Ground Fault Circuit Breaker How Ground Fault Protection Works | DoItYourself.com Ground Fault Interrupter Construction eTool | Electrical Incidents - Ground-fault Circuit Interrupters (GFCI) | Occupational Safety and Health Administration Ground-Fault Current: Problems and Solutions | Electrical Construction & Maintenance (EC&M) Magazine [TITLE] Find the - [Ground Fault](https://electricalschool.org/groundfault/) - Ground Fault Definition: An undesired current path between ground and an electrical potential. Related Links How to Install a Ground Fault Circuit Breaker How Ground Fault Protection Works | DoItYourself.com Ground Fault Interrupter Construction eTool | Electrical Incidents - Ground-fault Circuit Interrupters (GFCI) | Occupational Safety and Health Administration Ground-Fault Current: Problems and Solutions | - [Feeder](https://electricalschool.org/feeder/) - Feeder Definition: A three phase distribution line circuit used as a source to other three phase and single phase circuits. Related Links Article 215: Feeders | Electrical Construction & Maintenance (EC&M) Magazine What is difference between a feeder and transmission line? - Quora Electric Power eTool: Distribution Systems - Distribution Feeder Circuits Feeder line (network) - [Earth Fault Protection System](https://electricalschool.org/earthfaultprotectionsystem/) - Earth Fault Protection System Definition: A protection system which is designed to excite during faults to earth. Related Links [TITLE] Ground-Fault Protection Systems for Services | Electrical Contractor Magazine [TITLE] Inspection of Ground-Fault Protection Systems [TITLE] [TITLE] Power-system protection - Wikipedia Restricted Earth Fault Protection of Transformer | REF Protection Related Videos basic theory of - [Autotransformer](https://electricalschool.org/autotransformer/) - Autotransformer Definition: A transformer in which at least two windings have a common section. They are use to either "buck" or "boost" the incoming line voltage. Related Links Autotransformer - Wikipedia Autotransformer and Variable Auto transformer What is Auto Transformer ? Transformer with common primary and secondary winding Autotransformer Basics | Electrical Construction & Maintenance - [Unbalanced Loads](https://electricalschool.org/unbalancedloads/) - Unbalanced Loads Definition: Refers to an unequal loading of the phases in a three-phase system. Related Links Current and Voltage Unbalance- causes and counter measures | Zenatix 406 - Client browser does not accept the MIME type of the requested page. Unbalanced 3 phase Loads Balancing Unbalanced Electrical Power Loads Characteristics of the Neutral Conductor - [Operating Current](https://electricalschool.org/operatingcurrent/) - Operating Current Definition: The current used by a lamp and ballast combination during normal operation. Related Links Arc Lamps - How They Work & History HID Lamp Dimming | Electrical Construction & Maintenance (EC&M) Magazine How do xenon lamps and flash lamps work - Explain that Stuff [TITLE] [TITLE] Related Videos LED Basics View More - [AFD](https://electricalschool.org/afd/) - AFD Definition: Adjustable Frequency Drive Related Links Variable-frequency drive - Wikipedia What is a Variable Frequency Drive? The Basics of Variable-Frequency Drives | Electrical Construction & Maintenance (EC&M) Magazine Variable Frequency Drives for Motor Speed Adjustment Related Videos How to adjust speed of Allen Bradley PowerFlex4 VFD View More IE: How To Wire A Motor - [Mortality Curve](https://electricalschool.org/mortalitycurve/) - Mortality Curve Definition: A graphic representation of lamp burnout as a function of time. Related Links A Theory for the Mortality Curve of... (PDF Download Available) A Theory for the Mortality Curve of Filament Lamps - Buffalo Chapter The Fluorescent Lamp - Lifetime [TITLE] Lighting Calculations in the LED Era | Mouser Related Videos Lecture - [Time Delay Relay](https://electricalschool.org/timedelayrelay/) - Time Delay Relay Definition: A relay having an intentional delaying device. Related Links Understanding Time Delay Relay Functions Time-delay Relays | Electromechanical Relays | Electronics Textbook Basics of Time Delay Relays (TDRs) | Electrical Construction & Maintenance (EC&M) Magazine [TITLE] Related Videos How Electrical Circuits are Controlled by Time delay Relays View More 12 Volt - [Harmonic](https://electricalschool.org/harmonic/) - Harmonic Definition: A sinusoidal component of the voltage that is a multiple of the fundamental wave frequency. Related Links Harmonics and Harmonic Frequency in AC Circuits Harmonics (electrical power) - Wikipedia Fundamentals of Harmonics | Electrical Construction & Maintenance (EC&M) Magazine Related Videos Power System Harmonics Explained View More Fundamentals of Power Electronics - Harmonics - [Cutoff Angle (Lighting)](https://electricalschool.org/cutoffanglelighting/) - Cutoff Angle (Lighting) Definition: With regard to an outdoor lighting luminaire, the angle between the vertical axis and the first line of sight at which the bare light source is not visible. Related Links What are the IESNA cutoff classifications? | Light Pollution | Lighting Answers | NLPIP ERCO - Glossary - A - Cut-off - [Cutoff (Lighting)](https://electricalschool.org/cutofflighting/) - Cutoff (Lighting) Definition: Luminaire light distribution is classified as cutoff when the candlepower per 1000 lamp lumens does not numerically exceed 25 (2.5%) at an angle of 90 degrees above nadir (horizontal), and 100 (10%) at a vertical angle of 80 degrees above nadir. This app Related Links [TITLE] Nighttime Friendly | Lithonia Lighting What - [Conjunctive Test](https://electricalschool.org/conjunctivetest/) - Conjunctive Test Definition: A parametric or specific test of a protection system on all components and auxiliary equipment that are connected. 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Photovoltaic Related Links Photovoltaics - Wikipedia Photovoltaic (Solar Electric) | SEIA Solar Photovoltaic Technology Basics | NREL [TITLE] How do Photovoltaics Work? | Science Mission Directorate Explainer: what is photovoltaic solar energy? Related Videos How do solar panels work? - Richard Komp View More Explained: - [Photovoltaic Panel](https://electricalschool.org/photovoltaicpanel/) - Photovoltaic Panel Definition: Often used interchangeably with Photovoltaic Module. Especially in one-module systems , but more accurately used to refer to a physically connected collection of modules (i.e., a laminate string of modules used to achieve a required voltage and current). Photovoltaic Panel Related Links Photovoltaic (Solar Electric) | SEIA Photovoltaics - Wikipedia Solar Photovoltaic - [Flash Hazard](https://electricalschool.org/flashhazard/) - Flash Hazard Definition: A dangerous condition associated with the release of energy caused by an electric arc. Related Links Designing out Flash Hazard - IEEE Conference Publication Arc Flash Hazard Analysis | Electrical Construction & Maintenance (EC&M) Magazine Arc flash - Wikipedia Related Videos What is an Arc Flash Hazard? View More What is Arc - [Fault Current](https://electricalschool.org/faultcurrent/) - Fault Current Definition: The current that flows as a result of a short-circuit condition. Related Links [TITLE] Fault (power engineering) - Wikipedia How and why does fault current occur in an electrical power system? - Quora Beware of Simplistic Fault Current Calculations | Electrical Construction & Maintenance (EC&M) Magazine Available Fault-Current Calculation and Protection | - [Core Balance Current Transformer](https://electricalschool.org/corebalancecurrenttransformer/) - Core Balance Current Transformer Definition: A ring-type current transformer in which all primary conductors are passed through the aperture making any secondary current proportional to any imbalance in current. Related Links [TITLE] Core Balance Current Transformers Using core-balance current transformer for earth fault protection [TITLE] 406 - Client browser does not accept the MIME type - [Continuous Load](https://electricalschool.org/continuousload/) - Continuous Load Definition: An electrical load in which the maximum current is expected to continue for three hours or more Related Links A Look at Continuous and Non-Continuous Loads | IAEI Magazine Definition of Continuous and Non-Continuous Loads - Mike Holt Code Forum Your access to this site has been limited Sizing continuously loaded conductors - [Nickel Cadmium Battery](https://electricalschool.org/nickelcadmiumbattery/) - Nickel Cadmium Battery Definition: The assembly of one or more cells with an alkaline electrolyte, a positive electrode of nickel oxide and negative electrodes of cadmium. Related Links Nickel–cadmium battery - Wikipedia The Nickel Cadmium Battery | TurboFuture Nickel-Cadmium Batteries | SUNLIGHT Nickel cadmium cell (NiCd) - RECHARGE Batteries › Recharge Batteries Waldmar Jungner - - [Sidewall Pressure](https://electricalschool.org/sidewallpressure/) - Sidewall Pressure Definition: The force exerted on a cable as it is dragged around a bend. The longer the pull and the tighter the bend radius, the higher the sidewall pressure will become. High sidewall pressure damages cable. There is a higher chance of destroying cable by high s Related Links Simple Calculations for Pulling - [decibel](https://electricalschool.org/decibel/) - decibel Definition: A logarithmic mathematical ratio that indicates a devices electric or acoustic signal to that of another Related Links Decibel - Wikipedia Decibel | Definition of Decibel by Merriam-Webster Decibel | Define Decibel at Dictionary.com decibel - Wiktionary decibel | Definition, Formula, & Facts | Britannica.com decibel Meaning in the Cambridge English Dictionary Decibel - [Voltage Regulation](https://electricalschool.org/voltageregulation/) - Voltage Regulation Definition: The maintenance of a voltage level between two established set points, compensating for transformer and/or line voltage deviation, caused by load current. The voltage change is affected by the magnitude and the power factor of the load current. Related Links Voltage Regulation of Transformer Voltage regulation - Wikipedia [TITLE] The Basics of - [F](https://electricalschool.org/f/) - F Definition: Fahrenheit Related Links Fahrenheit - Wikipedia Fahrenheit: Facts, History & Conversion Formulas Fahrenheit to Celsius - ºF to ºC conversion Temperature Conversion Celsius to Fahrenheit | F to C or C to F | The Old Farmer's Almanac Related Videos Why America still uses Fahrenheit View More Celsius to Fahrenheit Conversion Trick View - [Mean-Sensing Transducer](https://electricalschool.org/mean-sensingtransducer/) - Mean-Sensing Transducer Definition: A transducer which measures the mean or average value of the input waveform but which is adjusted to give an output corresponding to the r.m.s. value of the input when that input is sinusoidal. Related Links An Introduction to Sensors and Tranducers Sensor Terminology - National Instruments Sensors and Transducers and Introduction - [Nominal Voltage](https://electricalschool.org/nominalvoltage/) - Nominal Voltage Definition: A nominal value assigned to a circuit or system for the purpose of conveniently designating its voltage class. Related Links Real versus nominal value - Wikipedia Battery Voltage Information – Battery University What is nominal voltage? - Quora nominal voltage Yahoo ahora forma parte de Oath Nominal voltage Confused about the meaning - [Bonding](https://electricalschool.org/bonding/) - Bonding Definition: The joining of metallic parts to form an electrically conductive path that will ensure electrical continuity and the capacity to conduct any current to be present in a safe manner. Related Links Electrical bonding - Wikipedia Electrical Bonding of CSST Gas Piping Systems: Master Plumbers Educational Service of New Jersey NEC 250.94 – - [Circuit Insulation Voltage](https://electricalschool.org/circuitinsulationvoltage/) - Circuit Insulation Voltage Definition: The highest circuit voltage to earth on which a circuit of a transducer may be used and which determines its voltage test. Related Links Understanding Insulation Resistance Testing | Electrical Construction & Maintenance (EC&M) Magazine [TITLE] [TITLE] Measurement of insulation resistance (IR) - Part 1 Other characteristics of a circuit-breaker - - [Voltage Transients](https://electricalschool.org/voltagetransients/) - Voltage Transients Definition: A transient (sometimes called impulse) is an extremely fast disturbance (millionths of a second to a few milliseconds) evidenced by a sharp change in voltage. Transients can occur on your electric, phone, or even cable TV lines. They can be caused by such Related Links Voltage spike - Wikipedia Voltage Sags, Dips, - [Off-Load Tap Changer](https://electricalschool.org/off-loadtapchanger/) - Off-Load Tap Changer Definition: A tap changer that is not designed for operation while the transformer is supplying load. Related Links Tap Changers for Transformers Off Load | Maier-Accessories Transformer Off-Load Tap Changer | Electrical Concepts Tap changer - Wikipedia What are Tap-changing Transformers? Off-load & On-load transformers - Circuit Globe Tap changers Log In - [Phase Rotation](https://electricalschool.org/phaserotation/) - Phase Rotation Definition: Phase rotation defines the rotation in a Poly-Phase System and is generally stated as "1-2-3", counterclockwise rotation. Utilities in the United States use "A-B-C" to define their respective phase names in place "1-2-3". However some refer to their rot Related Links Phase Rotation | Polyphase AC Circuits | Electronics Textbook Phase rotation - [TPI](https://electricalschool.org/tpi/) - TPI Definition: Tap Position Indicator for transformers. Related Links Tap Position Indicator Tap Position Indicator (TPI) - Emco Electronics PI – Tap Position Indicator and Controller | Treetech Related Videos Transformer Taps View More Direct drive electronic position indicators: features and functioning View More Turner Electric - Blade Position Indicator View More Synchro transmitter driving - [USE](https://electricalschool.org/use/) - USE Definition: Underground Service Entrance conductor or cable. Related Links Your access to this site has been limited [TITLE] [TITLE] [TITLE] If underground service entrance cable Type USE conductor insulation is not marked as an RHW conductor, can USE cable be used inside for premise wiring? | IAEI Magazine File Not Found Electrical Panel Requirements - [Harmonic Distortion](https://electricalschool.org/harmonicdistortion/) - Harmonic Distortion Definition: The presence of harmonics that change an AC waveform from sinusoidal to complex. They can cause unacceptable disturbance to electronic equipment. Related Links Total harmonic distortion - Wikipedia What is Total Harmonic Distortion? Harmonic Distortion: Definitions And Countermeasures | Electrical Construction & Maintenance (EC&M) Magazine Understanding Total Harmonic Distortion (THD) in Power - [AASHTO](https://electricalschool.org/aashto/) - AASHTO Definition: American Association of Safety Highway Traffic Officials Related Links Transportation.org – The home of transportation professionals.; Transportation.org - [NFPA 70E Standard](https://electricalschool.org/nfpa70estandard/) - NFPA 70E Standard Definition: Standard that provides guidance on implementing appropriate work practices that are required to safeguard workers from injury while working on or near exposed electrical conductors or circuit parts that could become energized. Related Links NFPA 70E®: Standard for Electrical Safety in the Workplace® NFPA 70E - Wikipedia A Very Short Guide - [Specific-Gravity (Battery)](https://electricalschool.org/specific-gravitybattery/) - Specific-Gravity (Battery) Definition: The weight of the electrolyte compared to the weight of an equal volume of pure water. It is used to measure the strength or percentage of sulfuric acid in the electrolyte. Related Links Specific Gravity / SPGR Explained - Industrial Batteries Battery Specific Gravity Test: Battery Hydrometer Test Measuring Specific Gravity : - [Outage](https://electricalschool.org/outage/) - Outage Definition: The state of a component or part of a power system that is not available for service because of some event associated with the component of power system. These are the longer term events (several seconds to hours) caused by external factors such as trees Related Links Find or report electric outages Outage - [AEIC](https://electricalschool.org/aeic/) - AEIC Definition: Association of Edison Illuminating Companies. Related Links About Us – The Association of Edison Illuminating Companies AEIC-Association of Edison Illuminating Companies Builders Booksource : Association of Edison Illuminating Companies by AEIC - [TRXLP](https://electricalschool.org/trxlp/) - TRXLP Definition: Tree Retardant Cross Linked Polyethylene. A thermoset plastic compound that is used for insulation of wire and cable containing an anti-treeing compound. Related Links An enhanced water tree-retardant crosslinked polyethylene for improved reliability and longevity of distribution power cables - IEEE Conference Publication An enhanced water tree-retardant crosslinked polyethylene for... [TITLE] Chemical crosslinking - [Generator Step-Up (GSU)](https://electricalschool.org/generatorstep-upgsu/) - Generator Step-Up (GSU) Definition: Generator step up is done by transformers directly connected to the generator output terminals. This is usually done via busbars in large generating stations. They normally have a high voltage in secondary and high current in primary. Related Links Generator step-up and system intertie power transformers Related Videos Energy Technology in - [Transducer](https://electricalschool.org/transducer/) - A transducer is a device for converting an electrical signal into a usable direct current or voltage for measurement purposes. - [Coil Loss](https://electricalschool.org/coilloss/) - Coil Loss Definition: Power loss in a transformer due to the flow of current. These losses are present only when the transformer is serving a load. Load losses vary by the square of the current magnitude. Load losses are composed of losses due to the current flow through the resistance of the conductors (the copper - [Overshoot Time](https://electricalschool.org/overshoottime/) - Overshoot Time Definition: The overshoot time is the difference between the operating time of the relay at a specified value of the input energizing quantity and the maximum duration of the value of input energizing quantity which, when suddenly reduced to a specific value below th Related Links Isolating the Fault With Time-based Discrimination Time - [Resistance](https://electricalschool.org/resistance/) - Resistance Definition: The opposition to current flow, expressed in ohms. Related Links Resistance: Ohm´s Law. What is Electrical Resistance? | Petervaldivia Voltage, Current, Resistance, and Ohm's Law - learn.sparkfun.com Ohm - Wikipedia Best Multimeters Related Videos Basic Electricity - Resistance and Ohm's law View More Measuring Resistance with a Digital Multimeter View More Using A - [Duct Bank](https://electricalschool.org/ductbank/) - A Duct Bank is two or more ducts or conduits used as part of a system. A duct bank protects and consolidates electrical cables to and from a building. - [Service Entrance Cable](https://electricalschool.org/serviceentrancecable/) - Service Entrance Cable connect and carry the electrical current the service conductors (drop or lateral) above ground to the service equipment of the building. - [Kilowatt](https://electricalschool.org/kilowatt/) - Kilowatt Definition: 1000 watts of real power. Expressed at kW. Related Links Kilowatt hour - WikipediaKilowatt (kW): definition, converter and how to convert Related Videos What is a Kilowatt hour? View More What is a Kilowatt Hour? View More What's the difference between a kW and a kWh? View More how to convert kilowatts to - [Electromotive Force](https://electricalschool.org/electromotiveforce/) - Electromotive Force Definition: Potential causing electricity to flow in a closed circuit. Related Links Electromotive force - WikipediaElectromotive force | physics | Britannica.comElectromotive force definition and meaning | Collins English DictionaryElectromotive Force and Internal ResistanceElectromotive force - definition of electromotive force by The Free Dictionary Related Videos Physics - E&M: The Electromotive Force (EMF) (4 - [Ampere](https://electricalschool.org/ampere/) - Ampere Definition: The unit expressing the rate of flow of an electric current. One ampere is the current produced by a difference in potential of one volt across a resistance of one ohm; An electric current flowing at the rate of one coulomb per second. Related Links Ampere - WikipediaAmpere | Define Ampere at Dictionary.comBase - [Lux](https://electricalschool.org/lux/) - Lux Definition: The SI unit of luminance. One lux is one lumen per square meter. Related Links Lux - WikipediaUnderstanding Illuminance: What’s in a Lux?What is lux (lx)? - Definition from WhatIs.comLux | unit of energy measurement | Britannica.comWhat is the difference between lumens and lux?Read Our Ultimate Guide To Lux vs Lumens vs Watts - [Capacitor](https://electricalschool.org/capacitor/) - Capacitor Definition: An electrical device having Capacitance. Related Links Capacitor - WikipediaCapacitor | electronics | Britannica.comcapacitor - WiktionaryWhat is capacitor (capacitance)? - Definition from WhatIs.comCapacitor Lab - Capacitor | Capacitance | Circuits - PhET Interactive SimulationsPower Generation, SuperCapacitors Related Videos Free Energy | How To Make Capacitor Bank For Free Energy | Supercapacitor View More - [Polyvinyl Chloride](https://electricalschool.org/polyvinylchloride/) - Polyvinyl Chloride Definition: Polyvinyl Chloride. PVC, a thermoplastic compound, is a commonly used Wire and Cable insulation and jacketing material. Related Links Has PVC weathered the negative attitudes of Environmentalists?Polyvinyl chloride - Wikipediapolyvinyl chloride | Definition, Synthesis, & Uses | Britannica.comTox Town - Polyvinyl Chloride (PVC) - Toxic chemicals and environmental health risks where you - [Thermoplastic](https://electricalschool.org/thermoplastic/) - Thermoplastic Definition: A plastic compound that will soften and melt with sufficient heat. Thermoplastic insulation compounds are used to manufacture certain types of electrical cables. Related Links What are Engineering Thermoplastics? Thermoplastic - WikipediaThermoplastic - Simple English Wikipedia, the free encyclopediaThe Difference Between Thermoplastic and Thermosetting PlasticWhat Is a Thermoplastic Polymer? | SciencingThermoplastics - [Digital Signal Processing](https://electricalschool.org/digitalsignalprocessing/) - Digital Signal Processing Definition: A technique for the processing of digital signals by various filter algorithms to obtain some desired output. Related Links Digital signal processing - WikipediaA Beginner's Guide to Digital Signal Processing (DSP) | Design Center | Analog DevicesWhat Is Digital Signal Processing (DSP)? And What Does It Mean For Music? Related Videos - [LED](https://electricalschool.org/led/) - LED Definition: Light Emitting Diode Related Links Light-emitting diode - WikipediaHow Light Emitting Diodes Work | HowStuffWorksLight-Emitting Diodes (LEDs) - learn.sparkfun.comLight Emitting Diode or the LED TutorialZEISS Microscopy Online Campus | Interactive Tutorials | IndexOLED: A Primer on Organic LEDs Related Videos LED Basics View More Light Emitting Diode View More The Light Emiting Diode - [Z](https://electricalschool.org/z/) - Z Definition: Impedance Related Links Electrical impedance - WikipediaWhat is impedance? - Definition from WhatIs.comImpedance | Define Impedance at Dictionary.comImpedance (video) | AC circuit analysis | Khan Academy Related Videos Impedance View More Tutorial: Electrical impedance made easy - Part 1 View More AC current impedance - Alternating Voltage for inductors, capacitors View More Physics - [Zero Crossing](https://electricalschool.org/zerocrossing/) - Zero Crossing Definition: The point at which a sinusoidal voltage or current waveform crosses the zero reference axis. 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Related Videos Spray Lubricant for Electrical Wire and Cable Pulling View More Tradesman TV: Foam Wire Pulling Lubricant View More Klein Tools Wire Pulling Lubricants - [Wye](https://electricalschool.org/wye/) - Wye Definition: A three phase, four-wire electrical configuration where each of the individual phases is connected to a common point, the "center" of the Y. This common point normally is connected to an electrical ground. Related Links Delta-wye transformer - Wikipedia3-Phase Power—Wye It Matters Related Videos Wye vs Delta ( A brief overview) View More - [X](https://electricalschool.org/x/) - X Definition: Reactance expressed in Ohms. Related Links Electrical reactance - WikipediaReview of R, X, and Z | Reactance And Impedance -- R, L, And C | Electronics TextbookReactance | electronics | Britannica.comCapacitive Reactance - The Reactance of CapacitorsEC Formula - Impedance Related Videos Resistance, Reactance and Impedance View More AC Circuits Basics, Impedance, Resonant - [XHHW-2](https://electricalschool.org/xhhw-2/) - XHHW-2 Definition: An XLPE insulated, moisture resistant conductor designed for use in wet or dry locations and an operating temperature of up to 90 degrees Celsius. Related Links XHHW-2406 - Client browser does not accept the MIME type of the requested page.THHN vs. XHHW: What Is the Difference?THHN vs. XHHW: What Is the Difference? | - [XLPE](https://electricalschool.org/xlpe/) - XLPE Definition: Cross-Linked Polyethylene. A thermo set plastic compound that is used for insulation of wire and cable. Related Links Cross-linked polyethylene - Wikipedia Related Videos Crosslinking polymers with organic peroxides View More Replacing Rotten Leaking Galvanized Pipe Under House With PEX View More E-BEAM Crosslinking Process View More Strength of Crosslink Polyethylene View More - [Voltage Spread](https://electricalschool.org/voltagespread/) - Voltage Spread Definition: The difference between maximum and minimum voltages. Related Links Analytically driven capacitor control for voltage spread reduction - IEEE Conference PublicationVoltage spread in an identified interneuron of the barnacle's visual system. - PubMed - NCBIVoltage spread and its effect on equipment[TITLE][TITLE]Voltage Spread|Girton Manufacturing Related Videos Voltage divider tutorial View More Recessed Lighting: - [Voltage Swells](https://electricalschool.org/voltageswells/) - Voltage Swells Definition: Voltage Swells are momentary (typically a few milliseconds to a few seconds duration) over-voltage conditions which can be caused by such things as a sudden decrease in electrical load or a short circuit occurring on electrical conductors. Voltage swells Related Links Voltage Dips, Swells, and Interruptions (Electrical Power Suite) - LabVIEW 2012 - [Voltage Transducer](https://electricalschool.org/voltagetransducer/) - Voltage Transducer Definition: A transducer used for the measurement of a.c. voltage. Related Videos Transducers View More ABB CC-E Series Signal Transducers - A GalcoTV Overview View More LED Voltage Transducer View More Resonant Voltage Transducer - Circuit Design. View More How to use a multimeter for advanced measurements: Part 2 - Current Probes / - [Voltage Transformer](https://electricalschool.org/voltagetransformer/) - Voltage Transformer Definition: Transformer used to accurately scale ac voltages up or down, or to provide isolation. Generally used to scale large primary or bus voltages to usable values for measuring purposes Related Links Voltage Transformer or Potential Transformer TheoryWhat is a voltage transformer and a current transformer? - QuoraTransformer - Wikipedia Related Videos How - [Voltage Transformer Ratio](https://electricalschool.org/voltagetransformerratio/) - Voltage Transformer Ratio Definition: The ratio of primary volts divided by secondary volts Related Links Transformer Basic OperationTurns Ratio and Voltage Ratio of Transformers, Are they the same?Transformer Basics and Transformer PrinciplesTransformer Turns Ratio (TTR) ExplainedTURNS AND VOLTAGE RATIOSTransformer - WikipediaStep-up and Step-down Transformers | Transformers | Electronics TextbookVoltage Transformer or Potential Transformer TheoryHow to - [Voltage Withstand Test](https://electricalschool.org/voltagewithstandtest/) - Voltage Withstand Test Definition: A field or factory test in which a conductor or electrical equipment is subjected to a higher than normal AC or DC voltage to test its insulation system. Related Links Dielectric withstand test - Wikipedia[TITLE]dielectric withstand test; Sefelec : Policy Quality[TITLE]What is HIPOT Testing (Dielectric Strength Test)?[TITLE][TITLE]406 - Client browser does - [VR Cable](https://electricalschool.org/vrcable/) - VR Cable Definition: AAC or ACSR with Vibration Resistant Twisted Pair Construction. Related Videos VR CABLE MANAGEMENT! | Midwec VR Cable Management Review View More VR headset cable management/suspension (Oculus Rift) View More VR Ultimate Cable Management Solution View More 3 ways to wrangle your VR headset's cord (How To) View More New PlayStation VR - [Vent Valve (Battery)](https://electricalschool.org/ventvalvebattery/) - Vent Valve (Battery) Definition: A normally sealed mechanism which allows the controlled escape of gasses from within a cell. Related Links [TITLE] Related Videos P0449 Vent Valve Testing EVAP Systems View More 12 Volts SLA battery overcharged and venting View More Battery Vent Tube Installation View More Battery venting - you've already vented one and - [Venting (Battery)](https://electricalschool.org/ventingbattery/) - Venting (Battery) Definition: The release of gas from a cell, either controlled (through a vent) or accidental. Related Links [TITLE]Nickel–cadmium battery - Wikipediabattery venting? | E-Cigarette ForumPossibly stupid question regarding car battery vent tube... - Cars and Trucks Message Board - GameFAQsHow to know if a battery is venting? | E-Cigarette Forum Related Videos Battery - [Volt](https://electricalschool.org/volt/) - Volt Definition: A unit of electromotive force. The electrical potential needed to produce one ampere of current with a resistance of one ohm. Related Links Volt (V) electrical unitVolt - WikipediaVolt | unit of measurement | Britannica.com Related Videos Understand Voltage, Ampere, Watts and Unit of Electricity View More Volts, Amps, and Watts Explained View - [Voltage Class](https://electricalschool.org/voltageclass/) - Voltage Class Definition: The general strength of electrical insulation on a device, determining the maximum continuous voltage that can be applied between the conducting parts and ground potential, without damaging the insulation. Related Videos Low Voltage Lighting, Class 2 Interface View More Low Voltage Qualified NFPA 70E Class ? e-Hazard View More How to Solve - [Voltage Drop](https://electricalschool.org/voltagedrop/) - Voltage Drop Definition: The loss of voltage in a circuit when current flows. Related Links Voltage drop - WikipediaVoltage Drop: Definition & Calculation | Study.comFAQ - Voltage DropDiagnosing Voltage Drops - Electrical Automotive TroubleshootingVoltage Drop CalculatorVoltage Drop Calculator Related Videos Charging System Problem - Voltage Drops - The Follow Up View More The Trainer #26: - [Voltage Rating](https://electricalschool.org/voltagerating/) - Voltage Rating Definition: The normal voltage to be applied to an electrical device to provide for proper operation. Related Links Understanding Why Voltage Rating Is Important — 1000Bulbs.com BlogFAQ: What is voltage rating | Eland CablesRating (electrical) - WikipediaVoltage rating vs. power rating of a resistor - Electrical Engineering Stack Exchange Related Videos What does - [Voltage Sag](https://electricalschool.org/voltagesag/) - Voltage Sag Definition: Voltage Sags are momentary (typically a few milliseconds to a few seconds duration) under-voltage conditions and can be caused by a large load starting up (such as a air conditioning compressor or large motor load) or operation of utility protection equip Related Links Voltage Sags (Dips) and Swells - Power Standards LabVoltage - [Vacuum Interrupter](https://electricalschool.org/vacuuminterrupter/) - Vacuum Interrupter Definition: A sealed "bottle" containing contacts of a switch inside a very high vacuum. When the contacts are parted in the vacuum, as there is no gas in the bottle to ionize, the current flow is quickly extinguished. Related Links Vacuum interrupter - WikipediaVacuum Interrupters - Power Distribution - Siemens Related Videos Vacuum - [Valve Regulated Sealed Cell (Battery)](https://electricalschool.org/valveregulatedsealedcellbattery/) - Valve Regulated Sealed Cell (Battery) Definition: A battery in which the cells are closed but have a valve which allows the escape of gas if the internal pressure exceeds a predetermined value (pressure). Related Links VRLA battery - WikipediaValve Regulated Lead Acid (VRLA) Batteries - UPS Battery Center5 Battery Types Explained - Sealed, AGM, Gel - [Vapor Phase](https://electricalschool.org/vaporphase/) - Vapor Phase Definition: In the core-type transformer, the core-and-coil assembly is independent of the tank, so that the assembly is allowed to completely dry. When drying the core-and-coil assembly, vapor phase drying method is used, in which special oil vapor is sprayed on the Related Links Vapor - WikipediaWhat is Vapor Phase? - Definition from - [VCB](https://electricalschool.org/vcb/) - VCB Definition: Vacuum Circuit Breaker. Related Links Vacuum Circuit Breaker Construction, Working And Its ApplicatonsVacuum Circuit Breaker (VCB) - Principle, Construction and Working | StudyElectrical | Online Electrical Engineering Study SiteWhat is Vacuum Circuit Breaker? Construction, Working, Advantages, Diadvantages & Applications of Vacuum Circuit Breaker - Circuit GlobeVacuum Circuit Breaker or VCB and Vacuum Interrupter - [VDC](https://electricalschool.org/vdc/) - VDC Definition: Volts DC. Related Links Direct current - Wikipedia Related Videos Difference between AC and DC Current Explained | AddOhms #5 View More AC vs. DC View More 12 Volt DC System Rebuild for RVs View More The Pain of Electricity (AC versus DC) View More High Voltage AC/DC Effect on Human Body View - [Vector Group Compensation](https://electricalschool.org/vectorgroupcompensation/) - Vector Group Compensation Definition: A feature of digital and numerical relays that compensates for the phase angle shift that occurs in transformers due to use of dissimilar winding connections. For example transformers connected in delta/star. Related Links VECTOR GROUP LTD Executive Salaries & Other Compensation | Salary.comVector Group Salaries | GlassdoorVector Group Ltd. – Investor - [Veiling Luminance](https://electricalschool.org/veilingluminance/) - Veiling Luminance Definition: A luminance superimposed on the retinal image which reduces its contrast. It is this veiling effect produced by bright sources or areas in the visual field that results in reduced visual performance and visibility. Related Links Calculations Roadway Luminance ConceptsIIS 8.5 Detailed Error - 406.0 - Not AcceptableGlare | Direct Glare | - [Vent Cap (Battery)](https://electricalschool.org/ventcapbattery/) - Vent Cap (Battery) Definition: The plug on top of a cell that can be removed to check and change the level of the electrolyte. Related Videos Off-Grid Solar Power Battery Vent Caps View More Water Miser Battery vent Caps Installed View More Water Miser Caps View More Water Miser Battery vent Caps. Solar Battery Caps - [Unrestricted Protection](https://electricalschool.org/unrestrictedprotection/) - Unrestricted Protection Definition: A protection system which has no clearly defined zone of operation and which achieves selective operation only by time grading. Related Links Unrestricted earth fault protection - Electric power & transmission & distribution - Eng-TipsRestricted and Unrestricted Proxy ARP Overview - Technical Documentation - Support - Juniper NetworksProtection from Unrestricted File Upload - [UPS](https://electricalschool.org/ups/) - UPS Definition: Uninterruptable Power Supply Related Links Uninterruptible power supply - Wikipedia Related Videos What UPS To Buy As Fast As Possible View More How to choose Uninterrupted Power Supply (UPS) Tutorial View More How a UPS Works View More Why you need a UPS (Uninterruptible Power Supply) View More What is a UPS? (NCIX - [URD](https://electricalschool.org/urd/) - URD Definition: Underground Residential Distribution. Related Links Underground Residential Distribution Systems Training CourseUnderground residential distribution - More hidden and reliableIIS 8.5 Detailed Error - 406.0 - Not Acceptable[TITLE]Automated underground residential distribution design. II. Prototype implementation and results - IEEE Journals & Magazine Related Videos Smart VFI Underground Distribution Switchgear View More Distribution and Underground Switching - [USMA](https://electricalschool.org/usma/) - USMA Definition: Utility Supply Management Alliance, a utility industry conference held annually that is focused on the supplier/customer relationship. Related Links The Utility Supply Management Alliance | A multi-national association of utilities and suppliersUtility Supply Management Alliance - USMA - 29 fotos - Compañía eléctrica - Olathe (Kansas) 66061 Related Videos Utility Supply Management Alliance - [V](https://electricalschool.org/v/) - V Definition: Voltage; Volt. Related Links Volt (V) electrical unitVolt - WikipediaVolt | unit of measurement | Britannica.com Related Videos Understand Voltage, Ampere, Watts and Unit of Electricity View More Volts, Amps, and Watts Explained View More A Level Physics - The Electronvolt View More Basic Electricity - What is an amp? View More Electron-volt - [VA](https://electricalschool.org/va/) - VA Definition: 1) Electrical capacity or electrical load, expressed as Volts x Amps. 2) Volt Ampere rating designates the output which a transformer can deliver at rated voltage and frequency without exceeding a specified temperature rise. Related Links Volt-ampere - WikipediaHow to convert volt-amps (VA) to amps (A)KVA to KW, How to Convert Watts to - [VAC](https://electricalschool.org/vac/) - VAC Definition: Volts AC. Related Links What Is VAC Power? | SciencingVoltage, Current, Resistance, and Ohm's Law - learn.sparkfun.comAlternating current - Wikipedia Related Videos AC vs. DC View More Intro to AC Circuits using Phasors and RMS Voltage and Current | Doc Physics View More Using a multimeter to check an ac wall outlet View - [Vacuum Circuit Breakers](https://electricalschool.org/vacuumcircuitbreakers/) - Vacuum Circuit Breakers Definition: Circuit breakers, normally applied at medium voltages, that use vacuum interrupters to extinguish the electrical arc and shut-off flowing current. Related Links Vacuum Circuit Breaker Construction, Working And Its ApplicatonsVacuum Circuit Breaker (VCB) - Principle, Construction and Working | StudyElectrical | Online Electrical Engineering Study SiteVacuum Circuit Breaker or VCB and - [Ultra High Voltage (UFV)](https://electricalschool.org/ultrahighvoltageufv/) - Ultra High Voltage (UFV) Definition: Transmission systems in the ac voltage exceeds 800,000 volts. Related Links Ultra-high-voltage | Corporate KnightsUltra-high-voltage electricity transmission in China - WikipediaHsiang Cheng UFV & UFA Series, True RMS AC Voltage and Current Digital Meters | Electro-MetersSparks fly over ultra-high voltage power lines | China DialogueChina’s under-utilised ultra-high-voltage power lines no - [Underground Residential Distribution](https://electricalschool.org/undergroundresidentialdistribution/) - Underground Residential Distribution Definition: (URD) Refers to the system of electric utility equipment that is installed below grade. Related Links Underground residential distribution - More hidden and reliableIIS 8.5 Detailed Error - 406.0 - Not Acceptable[TITLE]Underground Residential Distribution Systems Training CourseUnderground Residential Distribution and the Total Electric Subdivision - IEEE Journals & MagazineURD Cable / - [Underground Utility Structure](https://electricalschool.org/undergroundutilitystructure/) - Underground Utility Structure Definition: An enclosure for use underground that may be either a handhole or manhole. Related Links Tech Note Addresses Utility Structure HatchesUnderground Utilities - Capstone Structure,Precast Concrete Underground Utility Structure - Utility Structures - Kistner Concrete - Buffalo, NY, Western New York, WNY, precast, concrete, home, basement, foundation, wall panels, grease interceptors, - [Unidirectional Unit](https://electricalschool.org/unidirectionalunit/) - Unidirectional Unit Definition: Allows inputs to be measured in one direction only. The stated output range indicates the minimum and maximum input levels. Related Links What is the Difference Between Unidirectional and Bidirectional Pressure Transducers?Definition Unidirectional Unit- Electric CalcsUnidirectional Unit|Girton Manufacturing Related Videos Solares FMC Bidirectional Prover Operation View More Nakamichi Unidirectional Auto Reverse System - [Unit Electrical Relay](https://electricalschool.org/unitelectricalrelay/) - Unit Electrical Relay Definition: A single relay that can be used alone or in combinations with others. Related Links Relay - WikipediaHow Relays Work | Relay diagrams, relay definitions and relay types Related Videos The lockout relay circuit View More Contactor vs Relay - Difference between Relay and Contactor View More HVAC DC Heating Relay - [Unit Protection](https://electricalschool.org/unitprotection/) - Unit Protection Definition: A protection system that is designed to operate only for abnormal conditions within a clearly defined zone of the power system. Related Links Unit and Non-Unit Protection Scheme | Electrical Concepts[TITLE][TITLE]Unit & Non-Unit Type ProtectionOptimizing the Roles of Unit and Non-unit Protection Methods Within DC Microgrids - IEEE Journals & MagazineFig. 7. - [Universal Bushing Well](https://electricalschool.org/universalbushingwell/) - Universal Bushing Well Definition: This 200 amp rated component is used as part of a system to terminate medium voltage cables to transformers, switchgear and other electrical equipment. Universal Bushing Wells are manufactured by the Elastimold Division of Thomas & Betts. Related Links [TITLE]The resource cannot be displayed[TITLE][TITLE]Central Moloney Inc. - [True RMS volts](https://electricalschool.org/truermsvolts/) - True RMS volts Definition: 1) The effective value of an AC voltage value regardless of the waveform distortion. 2) An AC measurement which is equal power transfer capability to a corresponding DC voltage. Related Links What is true-rms?Fieldpiece Instruments406 - Client browser does not accept the MIME type of the requested page.Root mean square - - [Tubular Plate (Battery)](https://electricalschool.org/tubularplatebattery/) - Tubular Plate (Battery) Definition: A positive plate which is composed of assembly of porous tubes of perforated metal or tissure with or without a central current collector spine. The active material is placed within the tube. Related Links [TITLE][TITLE]Tubular Plate Battery Technology | Harris Battery | Commercial - Industrial Battery SupplierBattery Power Online | Comparison - [Tungsten Halogen Lamp](https://electricalschool.org/tungstenhalogenlamp/) - Tungsten Halogen Lamp Definition: A gas-filled tungsten halogen lamp containing a certain proportion of halogens. Related Links Tungsten Halogen Lamps & Gas Filled Lamps | International Light TechnologiesLight Bulbs: Tungsten-Halogen Lamps – Primelite Manufacturinghouse electricity lighting tungsten-halogen lamp image - Visual DictionaryZEISS Microscopy Online Campus | Tungsten-Halogen LampsHalogen lamp - Wikipedia Related Videos The Halogen - [TW](https://electricalschool.org/tw/) - TW Definition: 1) A thermoplastic insulated, moisture resistant conductor designed for use in wet or dry locations and an operating temperature of up to 60 degrees Celsius. 2) Trapezoidal Wire. Built as ACSR-TW or ACSS-TW, Trapezoidal Wire uses trapezoidal formed stran Related Links Trapezoidal Wire Properties (Metric Units)Ajex & Turner - Trapezoidal Shaped Wire Drawing - [Twisted Pair](https://electricalschool.org/twistedpair/) - Twisted Pair Definition: Telephone companies commonly run twisted pairs of cooper wires to each customer household. The pairs consist of two insulated cooper wires twisted into a spiral pattern. These wires are capable of transferring both voice as well as data.. Related Links Twisted pair - Wikipedia403 ForbiddenWhat is twisted pair? - Definition from WhatIs.comTwisted - [UCA](https://electricalschool.org/uca/) - UCA Definition: Utility Communications Architecture. Related Links IEEE Utility Communications Architecture (UCA) applies mainstream standard Ethernet | SpringerLink406 - Client browser does not accept the MIME type of the requested page.Utility communications architecture review - ScienceDirectFundamentals of Utilities Communication Architecture - IEEE Journals & Magazine[TITLE] Related Videos Next Generation Utility Core Operational Networks View More - [Transformer](https://electricalschool.org/transformer/) - Transformer Definition: An electro-magnetic device used to change the voltage in an alternating current electrical circuit. Related Links Transformer - WikipediaHow do electricity transformers work? - Explain that StuffTransformer Basics and Transformer PrinciplesThe Basics of Electrical Transformers - D & F Liquidators Related Videos How does a Transformer work ? View More How Transformers Work - [Transformer Insulation](https://electricalschool.org/transformerinsulation/) - Transformer Insulation Definition: This is the material that is used to provide electrical insulation between transformer windings at different voltage levels and also between the energized parts and the metal tank of the transformer. Generally, for large transformers used in power applica Related Links Insulation materials used in transformers | Microcontrollers LabIEEE Xplore Full-Text PDF:Raw - [Transformer Ratio](https://electricalschool.org/transformerratio/) - Transformer Ratio Definition: When used in reference to Instrument Transformers, this is simply the ratio of transformation of one or more transformers used in the circuit. If both Cts and VTs are included, the transformer ratio is the product of the CT and the VT. For example, assume Related Links How to measure a transformers - [Transformer Voltage Regulators](https://electricalschool.org/transformervoltageregulators/) - Transformer Voltage Regulators Definition: Mechanisms that use multiple voltage taps on a transformer-like device to adjust voltage on a power line. As the voltage increases or decreases on the circuit, sensors in the voltage regulator call for the input or output of the regulator to connect to di Related Links AVR Guide: Ferroresonant Transformer Advantages - [Trickle Charge (Battery)](https://electricalschool.org/tricklechargebattery/) - Trickle Charge (Battery) Definition: A continuous low rate charge that compensates for the self discharge rate of a battery. Also known as Float Charge. Related Links When and How to Use a Trickle Charger - CarsDirectUsing a Trickle Charger for Your Car BatterySo, What Is a Trickle Charger? | Advance Auto PartsTrickle Chargers, Float Chargers, - [True RMS Amps](https://electricalschool.org/truermsamps/) - True RMS Amps Definition: 1) The effective value of an AC signal. For an amp signal, true RMS is a precise method of stating the amp value regardless of waveform distortion. 2) An AC measurement which is equal in power transfer capability to a corresponding DC current. Related Videos True RMS meter amp readings compared - [Tracking Array (Photovoltaic)](https://electricalschool.org/trackingarrayphotovoltaic/) - Tracking Array (Photovoltaic) Definition: A photovoltaic array that follows the path of the sun to maximize the solar incident on the photovoltaic surface. The two most common orientations are (1) One axis tracking where the array tracks the sun east to west and (2) Two axis tracking where the a Related Links Advantages and disadvantages - [Transducer Error](https://electricalschool.org/transducererror/) - Transducer Error Definition: The actual value of the output minus the intended value of the output expressed algebraically. Related Links Fundamentals of Pressure Transducers | Hydraulics & PneumaticsSensor Terminology - National Instruments[TITLE]How to Troubleshoot a Pressure TransducerWhat are Hysteresis Errors?[TITLE]Transducer Error? - PC-DMIS User ForumTransducer error? - Chromatography Forum Related Videos Solving Transducer Problems View - [Transducer Factor](https://electricalschool.org/transducerfactor/) - Transducer Factor Definition: The product of the current transformer ratio (CTR) and the voltage transformer ratio (VTR). Also called the power ratio. Related Links PSA Series EMC Limit Lines and Transducer Factors | Keysight (formerly Agilent’s Electronic Measurement)Upload and Download of Transducer Factors | FAQ | Rohde & SchwarzLee-Dickens Ltd | Power Factor Transducer Related - [Transducer with Live Zero](https://electricalschool.org/transducerwithlivezero/) - Transducer with Live Zero Definition: A transducer which gives a predetermined output other than zero when the measurand is zero. Related Links What is meant by "live zero" and "dead zero" in sensors ?How To Re-Zero A Submersible Pressure Transducer | APG[TITLE]Advantages and Disadvantages of using a 4 to 20 mA SignalTransducer with Live Zero|Girton - [Transducer with Suppressed Zero](https://electricalschool.org/transducerwithsuppressedzero/) - Transducer with Suppressed Zero Definition: A transducer whose output is zero when the measurand is less than a certain value. Related Links Zero Suppression Calibration in Level Measurement ~ Learning Instrumentation And Control Engineering; Learning Instrumentation And Control Engineering[TITLE]406 - Client browser does not accept the MIME type of the requested page.A few important concepts - [Thermoset](https://electricalschool.org/thermoset/) - Thermoset Definition: A plastic compound that will not remelt. Thermoset insulation compounds are used to manufacture certain types of cables. Related Links Thermosetting polymer - WikipediaDesign Tip: Thermoplastic vs. Thermoset MaterialsThermoset Plastics and Pigment Dispersions | ChromafloThermoset vs. Thermoplastic - PSI UrethanesThermoset Injection Molded Partsthermoset - Wiktionary Related Videos Thermosets and Thermoplastics View More Understanding - [Thin Film (Photovoltaic)](https://electricalschool.org/thinfilmphotovoltaic/) - Thin Film (Photovoltaic) Definition: A layer of semiconductor material, such as copper indium diselenide, cadmium telluride, gallium arsenide, or amorphous silicon, a few microns or less in thickness, used to make photovoltaic cells. Related Links Thin-film solar cell - WikipediaThin Film Solar Panels: Do They Make Sense? | EnergySageThin Film vs. Crystalline Silicon PV Modules - [Three-Phase](https://electricalschool.org/three-phase/) - Three-Phase Definition: Multiple phase power supply or load that uses at least three wires where a different voltage phase from a common generator is carried between each pair of wires. The voltage level may be identical but the voltages will vary in phase relationship to each o Related Links Three-phase electric power - WikipediaThree-Phase Electric - [Through Fault Current](https://electricalschool.org/throughfaultcurrent/) - Through Fault Current Definition: The current flowing through a protected zone to a fault beyond that zone. Related Links Through-Fault Current Calculator | S&C Electric406 - Client browser does not accept the MIME type of the requested page.Faults in the transformer | ECE TutorialsPrimary Current Injection Through-fault Testing Power TransformersThe through fault current effect of - [Thumper](https://electricalschool.org/thumper/) - Thumper Definition: A high voltage device used to locate an underground cable fault. The device applies a high voltage to the faulted cable with a resulting discharge to ground at the location of the fault. Related Links 406 - Client browser does not accept the MIME type of the requested page.WTH is a thumper. For - [Tow Axis Tracking (Photovoltaic)](https://electricalschool.org/towaxistrackingphotovoltaic/) - Tow Axis Tracking (Photovoltaic) Definition: A photovoltaic system capable rotating on two axes (vertical and horizontal) to track the sun for maximum efficiency of the solar array. Related Links Advantages and disadvantages of a sun tracker systemSolar tracker - WikipediaPV Trackers Dual-Axis Benefits Related Videos Dual Axis Solar Tracker - DIY Arduino Powered View More - [Switching Surges](https://electricalschool.org/switchingsurges/) - Switching Surges Definition: A high voltage spike that occurs when current flowing in a highly inductive circuit, or a long transmission line, is suddenly interrupted. Related Links [TITLE][TITLE]What Are Surges | Nema Surge protection Institute[TITLE][TITLE][TITLE]What is switching surges? - QuoraThe effect of switching surges on 34.5 kV system design and equipment - IEEE Journals & - [System Disturbance Time](https://electricalschool.org/systemdisturbancetime/) - System Disturbance Time Definition: The time between fault inception and CB contacts making on successful re-closure. Related Links Disturbances of Time Consciousness From a Phenomenological and a Neuroscientific Perspective2.17. Disturbance Signals in Feedback Control Systems - Modern Control System Theory and Design, 2nd Edition [Book][TITLE] - [System Impedance Ratio](https://electricalschool.org/systemimpedanceratio/) - System Impedance Ratio Definition: The ratio of the power system source impedance to the impedance of the protected zone. Related Links [TITLE]Source Impedance Ratio (SIR) Calculation - Electric power & transmission & distribution - Eng-Tips406 - Client browser does not accept the MIME type of the requested page.A tutorial on calculating source impedance ratios for - [Tap Changer](https://electricalschool.org/tapchanger/) - Tap Changer Definition: A mechanism usually fitted to the primary winding of a transformer, to alter the turns ratio of the transformer by small discrete amounts over a defined range. Related Links Tap changer - WikipediaElectrical test equipment | power station to plug | MeggerHow Taps Work | HPS | Hammond Power SolutionsTap changerOn-load tap-changers - [TC57](https://electricalschool.org/tc57/) - TC57 Definition: Technical Committee 57 working for the IEC and responsible for producing standards in the field of protection (e.g. IEC 61850) - [Tensile Strength](https://electricalschool.org/tensilestrength/) - Tensile Strength Definition: The greatest longitudinal force that a substance can bear without tearing apart or rupturing; also called ultimate tensile strength. Related Links Ultimate tensile strength - WikipediaTensile strength - Simple English Wikipedia, the free encyclopediaTensile strength | physics | Britannica.comTensile strengthWhat is Tensile Strength? - Definition from CorrosionpediaWhat Is Ultimate Tensile Strength? » - [Sulfation (Battery)](https://electricalschool.org/sulfationbattery/) - Sulfation (Battery) Definition: The formation of lead sulfate of such physical properties that it is extremely difficult, if not impossible, to reconvert it to active material. Related Links Sulfation and How to Prevent it - Battery UniversityTesting for Battery Sulfation/How to Desulfate a Battery | BatteryMINDersThe resource cannot be found.Blog - How To Diagnose and - [Sulfur-Hexafluoride (SF6)](https://electricalschool.org/sulfur-hexafluoridesf6/) - Sulfur-Hexafluoride (SF6) Definition: A very dense, inert, non-conducting gas used inside high voltage equipment to insulate conducting components from surfaces at ground potential. It also is used as an interrupting medium in high voltage circuit breakers. Related Links Sulfur hexafluoride - WikipediaHeavy Gas - Sulfur Hexafluoride | Science Experiments | Steve Spangler ScienceSulfur hexafluoride | - [Super Draw Lead](https://electricalschool.org/superdrawlead/) - Super Draw Lead Definition: Also known as a split conductor. Historically bushings offered a draw lead rating of 400 amps, but by using Trench's split conductor in COTA bushings the draw leads now have ratings of 3,000 amps. - [Surge Withstand](https://electricalschool.org/surgewithstand/) - Surge Withstand Definition: A measure of an electrical device's ability to withstand high-voltage or high-frequency transients of short duration without damage. Related Links [TITLE]What is the surge withstand specification of RM4TA01 measurement and control relay.C37.90.1-2012 - IEEE Standard for Surge Withstand Capability (SWC) Tests for Relays and Relay Systems Associated with Electric Power Apparatus - - [Surge Withstand Capability (swc) Test](https://electricalschool.org/surgewithstandcapabilityswctest/) - Surge Withstand Capability (swc) Test Definition: The SWC test wave is an oscillatory wave, frequency range of 1-1.5 MHz, voltage range of 2.5-3 kV crest value of first peak, envelope decaying to 50% of the crest value of the first peak in not less than 6 micro seconds from the start of the wave. The - [Sweeling (Battery)](https://electricalschool.org/sweelingbattery/) - Sweeling (Battery) Definition: The swelling or bulging of a battery case that results from cell vents not allowing enough internal pressure to be relieved. Related Links What to Do When Your Phone or Laptop Has a Swollen BatteryHow to Handle a Swollen Battery in Your Laptop or PhoneHow swollen batteries can cause your mobile phone - [Switch, Network](https://electricalschool.org/switchnetwork/) - Switch, Network Definition: A Switch connects Client systems and servers together to create a network. It selects the path that the data packet will take to its destination by opening and closing an electrical circuit. Related Links Switch Management - CompTIA Network+ N10-006 - 2.6 | Professor Messer IT Certification Training Courses Related Videos Computer - [Switchgear](https://electricalschool.org/switchgear/) - Switchgear Definition: A general term covering switching and interrupting devices and their combination with associated control, metering, protective and regulating devices. Also, the assemblies of these devices with associated interconnection, accessories, enclosures and supp Related Links Switchgear - WikipediaRPS Switchgear Home - RPS SwitchgearSwitchgearCrown Technical Systems Switchgear Page Related Videos Switchgear View More Eaton Medium - [Static Wire](https://electricalschool.org/staticwire/) - Static Wire Definition: A wire placed above the phase wires of a distribution of transmission circuit to protect against lightning. It is normally galvanized or aluminized steel. Related Links What Are Each of the Wires on Utility Power Poles? | SciencingStatic wire | www.flexaust.comStatic Wire - DefinitionGalvanized Guy Wire / Static Wire On American Wire - [STC](https://electricalschool.org/stc/) - STC Definition: Short Time Current rating of a CT. Related Links CURRENT TRANSFORMER – EEE[TITLE]Current transformers,Voltage transformers and Instrument transformers:India[TITLE]6 electrical tests for Current Transformers explainedOn the Mechanical Short-Time Rating of a Current Transformer - IEEE Journals & MagazineCurrent transformer - Wikipedia406 - Client browser does not accept the MIME type of the requested page.Current - [Stranded Conductor](https://electricalschool.org/strandedconductor/) - Stranded Conductor Definition: A conductor made by twisting together a group of wire strands. Related Links Electrical Stranded ConductorsWire - WikipediaBasics of Wire and Cable: Solid vs. Stranded Conductors | Omni CableConductor Strand Types | AnixterSolid or Stranded Conductor Cable, Which to Choose?Why and when is a stranded conductor (wire) used? - Quora Related Videos - [Stringing Block](https://electricalschool.org/stringingblock/) - Stringing Block Definition: A sheave used to support and allow movement of a cable that is being installed. These are normally used overhead but there are also specialized designs used at the entrance to a conduit system. Stringing blocks are manufactured by Bethea. Related Links Universal Stringing Block[TITLE][TITLE][TITLE] Related Videos Henkels & McCoy - Power - [Substation Configuration Language](https://electricalschool.org/substationconfigurationlanguage/) - Substation Configuration Language Definition: Normalized configuration language for substation modeling as expected by IEC 61850-6. 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Typi Related Links Power system protection: Substation Control Systems ( SCS)Basics Of Subtransmission SystemsTHE SUBTRANSMISSION - [Stage 3 Emergency](https://electricalschool.org/stage3emergency/) - Stage 3 Emergency Definition: In the state of California, if power reserves ever fall below 1.5 percent, Cal-ISO, the independent system operator in California, will declare a Stage 3 emergency and the state's investor-owned utilities, may be ordered to immediately reduce the demand f Related Links [TITLE]Highest Energy Alert / STAGE 3 EMERGENCY Rolling blackouts - [Standard calibration](https://electricalschool.org/standardcalibration/) - Standard calibration Definition: The nominal point at which a measurement device is adjusted. Related Links Calibration - Wikipedia Related Videos EEVblog #374 - DIY Multimeter Calibration View More Calibration Traceability and Standards Compliance View More EEVblog #210 - Krohn-Hite DC Voltage Standard Teardown & Calibration View More pH Meter Calibration View More Tensitron CX-1000-1 Tension - [Starting Current](https://electricalschool.org/startingcurrent/) - Starting Current Definition: Current required by the ballast during initial arc tube ignition. Current changes as lamp reaches normal operating light level. Related Links Inrush current - Wikipediapower - Starting current of an induction motor - Electrical Engineering Stack ExchangeProblem of motor protection and high motor inrush currents Related Videos What Is Inrush Current And - [Starting Relay](https://electricalschool.org/startingrelay/) - Starting Relay Definition: A unit relay which responds to abnormal conditions and initiates the operation of other elements of the protection system. Related Links Components for Electric Motors: 10.1 Starting Relays for Single-Phase Motors; 10.2 Current or Amperage Relays[TITLE][TITLE]What Is a Starter Device Relay for a Refrigerator? | Home Guides | SF Gate Related Videos - [Starved Cell (Battery)](https://electricalschool.org/starvedcellbattery/) - Starved Cell (Battery) Definition: A cell containing little or no free fluid electrolyte solution. This enables gasses to reach electrode surfaces readily, and permits relative high rates of recombination. Related Links [TITLE]A sealed, starved-electrolyte nickel–iron battery | SpringerLinkWhat is the difference between gel cell and starved electrolyte batteries? - HielineVRLA battery - Wikipedia Related Videos - [STATCOM](https://electricalschool.org/statcom/) - STATCOM Definition: A particular type of Static Var Compensator, in which Power Electronic Devices such as GTO's are used to generate the reactive power required, rather than capacitors and inductors. Related Links PV module integration with STATCOM for reactive power compensation - IEEE Conference PublicationFULL REPORT | Distributed Generation | Power Inverter12 pulse STATCOM example. - [Static Relay](https://electricalschool.org/staticrelay/) - Static Relay Definition: An electrical relay in which the designed response is developed by electronic, magnetic, optical or other components without mechanical motion. Excludes relays using digital technology. Related Links What is a Static Relay? - Definition, Advantages & Limitations of Static Relay - Circuit GlobeStatic relay - WikipediaWorking of Static Relay - Polytechnic HubIntroduction - [Static Var Compensator](https://electricalschool.org/staticvarcompensator/) - Static Var Compensator Definition: A device that supplies or consumes reactive power comprised solely of static equipment. It is shunt-connected on transmission lines to provide reactive power compensation. Related Links Static VAR compensator - WikipediaStatic Var Compensator (SVC "Classic") - SiemensWhat is Static VAR Compensator (SVC)? Definition & Advantages of SVC - Circuit GlobeWhat is - [Split Phase](https://electricalschool.org/splitphase/) - Split Phase Definition: A split phase electric distribution system is a 3-wire single-phase distribution system, commonly used in North America for single-family residential and light commercial (up to about 100 kVA) applications. It is the AC equivalent of the former Edison dir Related Links Split-phase electric power - WikipediaWhat is Split-Phase Power? - Sense BlogSingle-phase - [Spread Spectrum](https://electricalschool.org/spreadspectrum/) - Spread Spectrum Definition: A wireless communications technology that scatters data transmissions across the available frequency band in pseudorandom pattern. Spreading the data across the frequency spectrum greatly increases the bandwidth which in turn can reduce noise and provide Related Links Spread spectrum - WikipediaTutorial on Spread Spectrum Technology | EE TimesAn Introduction to Spread-Spectrum Communications - [Spring Winding Time](https://electricalschool.org/springwindingtime/) - Spring Winding Time Definition: For spring-closed CB's, the time for the spring to be fully charged after a closing operation. Related Links Spring Winding | Retro Tech JournalCoil Winding Machine | Spring Winding Machine | Ace Wire Spring & FormMaking Springs on the Small LatheMake Your Own Springs in Secondsitalki: Learn a language onlineWinding a - [Stability Limits of a Protection System](https://electricalschool.org/stabilitylimitsofaprotectionsystem/) - Stability Limits of a Protection System Definition: The r.m.s. value of the symmetrical component of the through fault current up to which the protection system remains stable. Related Links [TITLE]Power System Stability[TITLE][TITLE]Stability Limits of Synchronous Motors during Power System Disturbances - IEEE Journals & Magazine406 - Client browser does not accept the MIME type of - [Stability of a Protection System](https://electricalschool.org/stabilityofaprotectionsystem/) - Stability of a Protection System Definition: The quantity whereby a protection system remains inoperative under all conditions other than those for which it is specifically designed to operate. Related Links [TITLE]Power-system protection - Wikipedia[TITLE][TITLE]Protection relay stability study for 115kV and 34.5kV transmission and distribution system - IEEE Conference Publication Related Videos Protective Relaying for Power - [Stability of Transducer](https://electricalschool.org/stabilityoftransducer/) - Stability of Transducer Definition: The ability of a transducer to keep its performance characteristics unchanged during a specified time, all conditions remaining constant. Related Links NIST Laboratory Information Systems Team - Problem processing requestA stable, sensitive, low-compliance capacitance force transducer. - PubMed - NCBI[TITLE]Investigation of the stability of a quantum transducer designed for precision measurement - [Single Element Transducer](https://electricalschool.org/singleelementtransducer/) - Single Element Transducer Definition: A transducer having one measuring element. Related Links Single Element Transducers | Olympus IMS[TITLE]Single Element Transducer | APC International Ltd.Transducer Types[TITLE]Single-element focused ultrasound transducer method for harmonic motion imaging. - PubMed - NCBIA single-element transducer with nonuniform thickness for high-frequency broadband applications - IEEE Journals & Magazine Related Videos SINGLE ELEMENT - [Single-Phase](https://electricalschool.org/single-phase/) - Single-Phase Definition: This implies a power supply or a load that uses only two wires for power. Some "grounded" single phase devices also have a third wire used only for a safety ground, but not connected to the electrical supply or load in any other way except for safety grou Related Links Single-phase electric power - [Single-Shot Reclosing](https://electricalschool.org/single-shotreclosing/) - Single-Shot Reclosing Definition: An auto-reclose sequence that provides only one reclosing operation, lock-out of the CB occurring if it subsequently trips. Related Links One Shot Circuit Breaker Reclosers | Single Phase Recloser79M and 79S multi-shot and single-shot reclosing relays - Solid state relays (Electromechanical and solid state relays) | ABB[TITLE][TITLE]406 - Client browser does not - [Sintered Plate (Battery)](https://electricalschool.org/sinteredplatebattery/) - Sintered Plate (Battery) Definition: The plate of an alkaline cell, the support of which is made of sintered metal powder, and into which the active material is introduced. Related Links IIS 7.5 Detailed Error - 406.0 - Not AcceptableNickel–cadmium battery - WikipediaAll the information on Cadmium - BatteriesVENTED SINTERED-PLATE NICKEL-CADMIUM BATTERIES Related Videos MEMLAB - - [SOTF](https://electricalschool.org/sotf/) - SOTF Definition: Switch on to Fault (protection). Related Links NERCWhat is SOTF Protection? | Electrical Concepts[TITLE]Analog Devices Introduces Industry’s First Analog Fault Detection and Protection Switch Family for Analog Input/Output Modules in Harsh Environments | Analog DevicesFault Protection Saves Multiplexers, Switches, and Downstream Circuitry - Tutorial - Maxim[TITLE][TITLE] Related Videos Protection relay: Power system protection - [Spacing-to-Mounting Height Ratio](https://electricalschool.org/spacing-to-mountingheightratio/) - Spacing-to-Mounting Height Ratio Definition: Ratio specification used to insure that fixtures are adequately spaded, thus preventing "hotspots" Related Links spacing-to-mounting-height ratio, S/MH | IESLighting Definitions - Resources - Acuity BrandsLumen Method CalculationsLumen MethodHow to measure illumination[TITLE][TITLE][TITLE]Light Guide: Useful Formulas Related Videos What is Lumen method? View More Lighting Calculations View More Luminous Flux, Luminous Intensity - [Specific Conjuctive Test](https://electricalschool.org/specificconjuctivetest/) - Specific Conjuctive Test Definition: A conjunctive test using specific values of each of the parameters. - [Shock Hazard](https://electricalschool.org/shockhazard/) - Shock Hazard Definition: A dangerous electrical condition associated with the possible release of energy caused by contact or approach to energized parts. Related Links Shock hazard - Energy Education[TITLE]Electric Shock HazardsElectrical injury - Wikipedia Related Videos Electrocution Hazards/Construction - PART I - Hazard Types - V0001529ET View More Electrical Safety in the Workplace: Shock Hazard - [Short Circuit](https://electricalschool.org/shortcircuit/) - Short Circuit Definition: 1. A load that occurs when at ungrounded conductor comes into contact with another conductor or grounded object. 2. An abnorman connection of relatively low impedance, whether made intentionally or by accident, between two points of different potential. Related Videos Top 5 Dangerous Short Circuit View More What is Short Circuit? View - [Short Distribution (Lighting)](https://electricalschool.org/shortdistributionlighting/) - Short Distribution (Lighting) Definition: A luminary is classified as having a short light distribution when its max candlepower point falls between 1.0MH 2.25MH TRL. The maximum luminaire spacing-to-mounting height ratio is generally 4.5 or less. Related Links What are Light Distribution Types? - AtlantaLightBulbs.comLuminaire Light Distribution ClassificationsLED Distribution Types – EYE Lighting[TITLE][TITLE] Related Videos Photometrics - [Shotgun Stick](https://electricalschool.org/shotgunstick/) - Shotgun Stick Definition: A specialized hot stick that allows the capture of certain types of clamps and devices in its hook. It is also called a "Grip All" stick. Related Videos TEN Group Stirrup Connector Hotstick Installation View More Tel-O-Pole Shotgun Sticks View More Simple Socket with a Shotgun Stick - R&D Utility Products View - [Simplex Communications System](https://electricalschool.org/simplexcommunicationssystem/) - Simplex Communications System Definition: A communications system in which data can only travel in one direction. Related Links Simplex communication - WikipediaWhat is a Simplex Transmission?What is simplex? - Definition from WhatIs.comIntroduction to Simplex, Half Duplex and Full DuplexSimplex, Half Duplex, Full Duplex Communication Channel | Electronics and Communication Lecture NotesDefining: Simplex, Half-duplex, and DuplexSimplex, - [Separator (Battery)](https://electricalschool.org/separatorbattery/) - Separator (Battery) Definition: A porous, insulating material placed between plates of opposed polarities, to prevent internal short circuits. Related Links BU-306: What is the Function of the Separator? – Battery University[TITLE]Nanofiber applicationsBattery Separators for Li-ion Cell Manufacturing and R&D | TargraySeparator (electricity0 - Wikipedia Related Videos What Is a Battery Separator View More A Battery - [SER](https://electricalschool.org/ser/) - SER Definition: Service Entrance Cable. Related Links What Is Service Entrance Cable | Wesbell Wire And Cable Blog Related Videos T4E - Service Entrance View More Service Entrance Equipment Ch#27 09 18 13 View More Utility Wire Sizes View More DIY Electrical Wiring Workshop Service Entrance View More Electrical Wiring-Overhead service wiring View More Stripping - [Series Connection](https://electricalschool.org/seriesconnection/) - Series Connection Definition: For DC circuits, a way of joining batteries, electrical devices and wires in such a way that positive leads are connected to negative leads. This is generally done to increase voltage. Related Links Direct Connect (protocol) - WikipediaDC vs. AC Polarity for SMAW[TITLE]Beckhoff Information System - English Related Videos Series DC Motor - [Service Life (Battery)](https://electricalschool.org/servicelifebattery/) - Service Life (Battery) Definition: The total period of useful life of a battery, normally expressed in the total number of Charge/Discharge cycles. Related Links Service life - WikipediaBU-801b: How to Define Battery Life – Battery UniversityWhat is the expected life of my APC UPS battery?Normal Life of a Car Battery | HowStuffWorksBattery Life and How - [SEU](https://electricalschool.org/seu/) - SEU Definition: Service entrance cable. Related Links What Is Service Entrance Cable | Wesbell Wire And Cable Blog Related Videos T4E - Service Entrance View More Service Entrance Equipment Ch#27 09 18 13 View More Utility Wire Sizes View More DIY Electrical Wiring Workshop Service Entrance View More Electrical Wiring-Overhead service wiring View More Stripping - [SFC](https://electricalschool.org/sfc/) - SFC Definition: Sequential Function Chart. One of the IEC 61131-3 programming languages. Related Links Sequential Function Charts for All | PLCdevSequential function chart - WikipediaIntroduction to sequential function chart v1.0Sequential Function Chart (SFC)[TITLE][TITLE]What are sequential function charts (SFCs) for PLCs?System Integration: Sequential function chart programming - ISALogic Guide - How Sequential Function Charts Work (Sequential - [S.I.R.](https://electricalschool.org/sir/) - S.I.R. Definition: System Impedance Ratio Related Links [TITLE]Source Impedance Ratio (SIR) Calculation - Electric power & transmission & distribution - Eng-Tips406 - Client browser does not accept the MIME type of the requested page.A tutorial on calculating source impedance ratios for determining line length - IEEE Conference PublicationImpedance matching - WikipediaThe Importance of the X/R - [SAIDA](https://electricalschool.org/saida/) - SAIDA Definition: A distribution system reliability measure of the system average interruption duration index. It is commonly measured in customer minutes of interruption and is commonly used as an electric service performance metric. Related Videos Inverters, How do they work ? View More Inverters, How do they work ? View More - [SAIFI](https://electricalschool.org/saifi/) - SAIFI Definition: A distribution system reliability measure of the system average interruption frequency index. It measures sustained outages and interruptions and is a metric for the entire power system. Related Links SAIFI - WikipediaElectric Reliability Reports Related Videos Improving CAIDI and SAIDI with Automated Callout View More Technology Helps Electric Utilities Reduce SAIDI by Predicting - [SCADA](https://electricalschool.org/scada/) - SCADA Definition: Supervisory Control and Data Acquisition. Related Links SCADA - WikipediaDistributed control system - WikipediaRemote terminal unit - WikipediaDNP3 - WikipediaCategory:SCADA - WikipediaWhat is SCADA? Supervisory Control and Data AcquisitionSCADA SystemsWhat is SCADA (supervisory control and data acquisition)? - Definition from WhatIs.comWhat is SCADA? Supervisory Control and Data AcquisitionWhat is SCADA? Webopedia Definition Related - [Scaling Resistor](https://electricalschool.org/scalingresistor/) - Scaling Resistor Definition: A resistor added to an output circuit of measurement equipment to provide a scaled voltage output. The output is not a "true" voltage output and may be susceptible to loading errors. Related Links Three ways to scale an analog input signal - Analog Wire - Blogs - TI E2E Community[TITLE]Current Loops, Scaling - [SCP](https://electricalschool.org/scp/) - SCP Definition: Substation Control Point. HMI computers at substation level allowing the operators to control the substation. Related Links [TITLE]Substation AutomationSubstation Automation Basics - The Next GenerationSubstation Automation :: GE Grid SolutionsSubstation Automation System (SAS) | Control & Monitoring System (SCMS)Substation Automation Systems & Solutions | Power System Substations | ABB Related Videos Substation automation - [SCS](https://electricalschool.org/scs/) - SCS Definition: Substation Control System. Related Links Power-system automation - WikipediaDFE- Solutions & Products-Solutions-Substation Control SystemSubstation Automation Systems & Solutions | Power System Substations | ABBSubstation Automation System (SAS) | Control & Monitoring System (SCMS)Power system protection: Substation Control Systems ( SCS) Related Videos Substation automation systems | Substation control technology View More Video Session - [Sealed Cell (Battery)](https://electricalschool.org/sealedcellbattery/) - Sealed Cell (Battery) Definition: Cells that are free from routine maintenance and can be operated without regard to position. Related Links VRLA battery - WikipediaFlooded vs. Sealed Rechargeable Batteries - Sure Power, Inc5 Battery Types Explained - Sealed, AGM, Gel | BatteryStuffDifferences between AGM, GEL and FLOODED batteries: Related Videos Working Principle of Lead Acid - [Self Discharge (Battery)](https://electricalschool.org/selfdischargebattery/) - Self Discharge (Battery) Definition: The decrease in the state of charge of a battery or cell, over a period of time, due to internal electro-chemical losses. Related Links Self-discharge - WikipediaElevating Self-discharge - Battery UniversitySelf discharge of batteries[TITLE]Battery self-discharge - Advanced Solar Training CoursesSelf-discharge losses in lithium-ion cells - IEEE Journals & Magazine Related Videos - [Reversible Output Current](https://electricalschool.org/reversibleoutputcurrent/) - Reversible Output Current Definition: An output current which reverses polarity in response to a change of sign or direction of the measurand. Related Links power electronics - Reversible Constant Current Source (CCS) - Electrical Engineering Stack ExchangeCircuit Idea/How to Reverse Current Direction - Wikibooks, open books for an open worldFully reversible current driven by a - [Ridge Pin](https://electricalschool.org/ridgepin/) - Ridge Pin Definition: A device that allows the mounting of a pin type insulator to a pole. The ridge pin is bolted to the top of the pole and the insulator is screwed onto the threads at its top. Related Links 406 - Client browser does not accept the MIME type of the requested page.Ridge - [Ripple](https://electricalschool.org/ripple/) - Ripple Definition: The magnitude of AC fluctuation in a DC signal, after filtering. Ripple is usually expressed as a percentage of rated output. Related Links Ripple (electrical) - WikipediaWhat is Ripple? - Sunpower UK[TITLE][TITLE]How to Read Ripple Voltage with a Meter | SciencingHow can I reduce AC ripple current in a power supply?How does a - [Ripple Content of the Output](https://electricalschool.org/ripplecontentoftheoutput/) - Ripple Content of the Output Definition: With steady-state input conditions, the peak-to-peak value of the fluctuating component of the output. Related Links Ripple (electrical) - WikipediaWhat is Ripple? - Sunpower UKWhat are ripples in rectifier output? - Quora Related Videos Ripple, Ripple Factor & General Equation of Ripple Factor for Rectified Output View More Half - [RJ-11](https://electricalschool.org/rj-11/) - RJ-11 Definition: Registered Jack 11. Standard telephone connector which has a tab that snaps into the socket and must be pressed to be removed from telephone or socket. Usually houses two wires but is capable of housing up to four. Related Links RJ-11 – ????????RJ-11 Definition from PC Magazine EncyclopediaRegistered jack - Wikipedia Related Videos - [RJ-45](https://electricalschool.org/rj-45/) - RJ-45 Definition: Registered Jack 45. Connectors used to connect computers to LANs or phones with many lines. It is able to house up 8 wires that is twice as many wires as the RJ-11. Related Links RJ45 - WikipediaRJ45, RJ45s and 8P8C Connectors and Cables ExplainedWhat is an RJ45 Connector | AnixterWhat is RJ-45?RJ45 or - [RMU](https://electricalschool.org/rmu/) - RMU Definition: Ring Main Unit. Related Links Ring main unit - WikipediaWhat is RMU (Ring Main Unit) and Its Use in Electrical Power Distribution System? ~ EEE Interview Tips406 - Client browser does not accept the MIME type of the requested page.What function does a Ring Main Unit serve? - QuoraRing Main Unit as an - [ROCOF](https://electricalschool.org/rocof/) - ROCOF Definition: Rate of Change of Frequency. Related Links [TITLE]df/dt Relay - Rate of Change of Frequency (ROCOF) Relay | Electrical ConceptsWhat is the application of rate of change of frequency (ROCOF) protection df/dt (81R) in protection relay.[TITLE][TITLE][TITLE]Rate of change of frequency measurement | CERTSRate of change of frequency - a power quality descriptor - - [Root-Mean-Square](https://electricalschool.org/root-mean-square/) - Root-Mean-Square Definition: The effective value of alternating current or voltage. The RMS value equates an AC current or voltage to a DC current or voltage that provides the same power transfer. Related Links Root mean square - WikipediaRoot-Mean-Square -- from Wolfram MathWorldThe Root Mean SquareRMS Voltage of a Sinusoidal AC Waveform[TITLE]Root_Mean_Square Related Videos The Concept - [RTU](https://electricalschool.org/rtu/) - RTU Definition: Remote Terminal Unit. An IED used specifically for interfacing between a computer and other devices. Sometimes may include control, monitoring, or storage functions. Related Links Remote terminal unit - WikipediaWhat is a Remote Terminal Unit (RTU)? - Definition from TechopediaACE3600 Remote Terminal UnitTelecontrol for substations (RTUs) - Industrial Communication - SiemensRemote Terminal Units - [Regulating Transformer](https://electricalschool.org/regulatingtransformer/) - Regulating Transformer Definition: A transformer used to vary the voltage, or phase angle, of an output circuit. It controls the output within specified limits and compensates for fluctuations of load and input voltage. Related Links What is Regulating Transformer? Definition & Explanation - Circuit GlobeREGULATING TRANSFORMER,Voltage , Phase angle regulating transformer406 - Client browser does - [Regulator](https://electricalschool.org/regulator/) - Regulator Definition: A device that is used to control the voltage of a circuit by raising and lowering it. Related Links Voltage regulator - WikipediaVoltage regulator | electronics | Britannica.com[TITLE]Electronics Fundamentals: The Voltage Regulator[TITLE] Related Videos Voltage regulator tutorial & USB gadget charger circuit View More Zener Diode as Voltage Regulator (Part 1) View More - [Relay](https://electricalschool.org/relay/) - Relay Definition: A relay is an electrically operated switch. Related Links Relay Switch Circuit and Relay Switching CircuitHow do relays work? - Explain that Stuff!Electrical Relay and Solid State Relays for SwitchingRelay - Wikipedia Related Videos How An Automotive Relay Works and How to Wire 'Em up View More What is a Relay? (Interactive!) - - [Remote Control Point](https://electricalschool.org/remotecontrolpoint/) - Remote Control Point Definition: The remote control point is a SCADA interface. Several RCP's may be managed with connections are done at a gateway or at substation computers. Related Links ICS/SCADA cyber security solutions | Check Point SoftwareSCADA - WikipediaWhat is SCADA? Real-world remote monitoring elements and applications[TITLE]Remote Control Modes - Local vs Remote - - [Resealable Cap (Battery)](https://electricalschool.org/resealablecapbattery/) - Resealable Cap (Battery) Definition: A safety vent valve which is capable of closing after each pressure release from within a cell. Related Links 406 - Client browser does not accept the MIME type of the requested page. - [Residual Current](https://electricalschool.org/residualcurrent/) - Residual Current Definition: The algebraic sum, in a multi-phase system, of all the line currents. Related Links Residual-current device - Wikipedia[TITLE]What is the difference between a residual current device (RCD) and a residual circuit breaker with overcurrent protection (RCBO)? – EnerguideResidual current definition and meaning | Collins English Dictionaryresidual current | Definition of residual current - [Residual Voltage](https://electricalschool.org/residualvoltage/) - Residual Voltage Definition: The algebraic sum, in a multi-phase system, of all the line-to-earth voltages. Related Links Working Principle of Residual Voltage Transformer | Electrical ConceptsHow can residual voltage or leakage current be eliminated from the circuit of an illuminated pilot device with an LED light module?residual voltage - Glossary index | OMRON Industrial AutomationWhat - [Restricted Approach Boundary](https://electricalschool.org/restrictedapproachboundary/) - Restricted Approach Boundary Definition: An approach limit at a distance form an exposed live part within which there is an increased risk of shock, due to electrical arc over combined with inadvertent movement, for personnel working in close proximity to the live part. Related Links What are the shock approach and arc flash boundaries | - [Rated Output](https://electricalschool.org/ratedoutput/) - Rated Output Definition: The output at standard calibration. Related Links What is Rated Output Current? - Sunpower UKPower rating - Wikipedia[TITLE]Terms and Definitions - trafomodernTechnical Library[TITLE] Related Videos What Is Rated Output Power? View More Understanding Power Ratings in AV Receivers View More What Is Rated Output Means? View More Home-built Tube Amp and Tutorial - [Ratio Correction](https://electricalschool.org/ratiocorrection/) - Ratio Correction Definition: A feature of digital relays that enables compensation to be carried out for a CT or VT ratio that is not ideal. Related Links [TITLE][TITLE]406 - Client browser does not accept the MIME type of the requested page.[TITLE]Special considerations when selecting transformer protection[TITLE][TITLE] Related Videos 3-Ph Transformer Differential Protection through numerical relays - [RCD](https://electricalschool.org/rcd/) - RCD Definition: Residual Current Device. A protection device which is actuated by the residual current. Related Links Residual-current device - WikipediaResidual current devices (RCDs) and Ground fault interrupters (GFIs)RCDs Explained | Electrical Safety FirstWhat is the difference between a residual current device (RCD) and a residual circuit breaker with overcurrent protection (RCBO)? – Energuide Related - [Reactance](https://electricalschool.org/reactance/) - Reactance Definition: The opposition of inductance and capacitance to alternating current equal to the product of the sine of the angular phase difference between the current and voltage. Related Links Electrical reactance - WikipediaElectrical reactance | Units of Measurement Wiki | FANDOM powered by WikiaReactance definition and meaning | Collins English DictionaryReactance | Definition of - [Reactive Power](https://electricalschool.org/reactivepower/) - Reactive Power Definition: A component of apparent power (volt-amps) which does not produce any real power (watts). It is measured in VARs volt-amps reactive. Related Links What Is Reactive Power and Why Does It Matter?True, Reactive, and Apparent Power | Power Factor | Electronics TextbookReactive Power Compensation of Reactive ComponentsReactive Power Compensation of Reactive Components - [Real Power](https://electricalschool.org/realpower/) - Real Power Definition: The average value of the instantaneous product of volts and amps over a fixed period of time in an AC circuit. Related Links True, Reactive, and Apparent Power | Power Factor | Electronics TextbookAC power - WikipediaElectrical Power in AC Circuits and Reactive PowerWhat is the difference between Apparent Power and Complex - [Recloser](https://electricalschool.org/recloser/) - Recloser Definition: A switching device that rapidly recloses a power switch after it has been opened by an overload. In reclosing the power feed to the line, the device tests the circuit to determine if the problem is still there. If not, power is not unnecessarily interrupt Related Links Recloser - Wikipedia Related Videos Recloser - [Recombination (Battery)](https://electricalschool.org/recombinationbattery/) - Recombination (Battery) Definition: State in which the hydrogen and oxygen gasses normally formed within the battery cell during charging are recombined to form water. Related Links Recombination BatteriesThe Basic Chemistry of Gas Recombination in Lead-Acid Batteries Related Videos Battery construction and cells View More What is VRLA BATTERY? View More Can A Dry Cell Battery - [Power Electronics Device](https://electricalschool.org/powerelectronicsdevice/) - Power Electronics Device Definition: An electronic device (e.g. thyristor or IGBT) or assembly of such devices (e.g. inverter). Typically used in a power transmission system to provide smooth control of output of an item of plant. Related Links POWER ELECTRONIC DEVICESPower Semiconductor DevicesPower electronics - Wikipedia Related Videos SiC Power Devices View More From Power - [Power Factor](https://electricalschool.org/powerfactor/) - Power Factor Definition: The ratio of energy consumed (watts) versus the product of input voltage (volts) times input current (amps). In other words, power factor is the percentage of energy used compared to the energy flowing through the wires. Adding capacitors to the system Related Links Understanding The Power Factor - Laurens Electric Cooperative[TITLE][TITLE]Power Factor - [Power Line Carrier Communication](https://electricalschool.org/powerlinecarriercommunication/) - Power Line Carrier Communication Definition: A mean of transmitting information over a power transmission line by using a carrier frequency superimposed on the normal power frequency. Related Links Power Line Carrier Communication (PLCC)Power-line communication - WikipediaPower line carrier equipment | PLC Network - Power line communication | ABB Related Videos lecture(07)_ power line carrier in - [Power Transformer](https://electricalschool.org/powertransformer/) - Power Transformer Definition: A large transformer, generally larger than 1,000 kVA in capacity. Related Links Transformer - WikipediaDifference between Power Transformer and Distribution TransformerPower Transformers - Weidmann Electrical Technology AG Related Videos How does a Transformer work ? View More What's inside an Electrical Transformer? View More Power Transformer vs Distribution Transformer View More Transformers - [Prohibited Approach Boundary](https://electricalschool.org/prohibitedapproachboundary/) - Prohibited Approach Boundary Definition: An approach limit at a distance from an exposed live part within which work is considered the same as making contact with the live part. Related Links Electrical Safety | Environmental, Health and Safety Services | Virginia TechVista College: Degree Programs & Career Training on Campus and OnlineProtection Boundaries[TITLE]NFPA 70E Compliance - [Protection Relay](https://electricalschool.org/protectionrelay/) - Protection Relay Definition: A relay designed to initiate disconnection of a part of an electrical installation or to a warning signal, in the case of a fault or other abnormal condition in the installation. A protection relay may include more than one electrical element and accessor Related Links Protective relay - WikipediaIntroduction to Protection Relay - [Protection Scheme](https://electricalschool.org/protectionscheme/) - Protection Scheme Definition: The coordinated arrangements for the protection of one or more elements of a power system. A protection scheme may compromise several protection systems. Related Links Power-system protection - Wikipedia[TITLE]Protection scheme for a new AC railway traction power system - IEEE Conference PublicationIncorporating failures of System Protection Schemes into power system operation - - [Protective Device Numbers, ANSI](https://electricalschool.org/protectivedevicenumbersansi/) - Protective Device Numbers, ANSI Definition: 2 Time-delay, 21 Distance, 25 Synchronism-check, 27 Undervoltage, 30 Annunciator, 32 Directional power, 37 Undercurrent or underpower, 38 Bearing, 40 Field, 46 Reverse-phase, 47 Phase-sequence voltage, 49 Thermal, 50 Instantaneous Related Links ANSI device numbers - Wikipedia406 - Client browser does not accept the MIME type of the requested page.Object - [Rated Capacity (Battery)](https://electricalschool.org/ratedcapacitybattery/) - Rated Capacity (Battery) Definition: The number of Amp-Hours a battery can deliver under specific conditions (rate of discharge, end voltage, temperature). Related Links Capacity and Battery Ratings Review - Engineers EdgeBattery Ratings | Batteries And Power Systems | Electronics TextbookCharles-Augustin de Coulomb's C-Rate for BatteriesWhat is the difference between battery capacity and rated capacity? - - [Point of Common Communication](https://electricalschool.org/pointofcommoncommunication/) - Point of Common Communication Definition: The interface between an in-plant network containing embedded generation and the utility distribution network to which the in-plant network is connected. - [Polarity](https://electricalschool.org/polarity/) - Polarity Definition: 1) The electrical Term used to denote the voltage relationship to a reference potential (+). 2) With regard to Transformers, Polarity is the indication of the direction of the current flow through the high voltage terminals with respect to the direction of current flow through the low voltage teminals. Related Links DIMETHYL DISULFIDE - [Pole Spacing (Lighting)](https://electricalschool.org/polespacinglighting/) - Pole Spacing (Lighting) Definition: (ILL x CU x LLF)/(AMF x RW) Related Links Highway Illumination Manual: Spacing of Light PolesFloodlighting Design Guide | Lithonia LightingLighting Use & Design Related Videos What Is The Distance Between Two Street Lights? View More Can Light Spacing View More Recessed Lighting Tips View More How Many Lights on a - [Polyethylene](https://electricalschool.org/polyethylene/) - Polyethylene Definition: A thermoplastic material composed of ethylene polymers. Polyethylene has excellent electrical and mechanical properties and is used an insulating material in cable. Related Links Polyethylene - WikipediaEverything You Need To Know About Polyethylene (PE)Polyethylene | chemical compound | Britannica.comPolyethylene Related Videos What is Polyethylene? View More Low Density Polyethylene (LDPE) Production Overview View - [Polymer Concrete](https://electricalschool.org/polymerconcrete/) - Polymer Concrete Definition: Also referred to as Reinforced Polymer Mortar (RPM). Polymer Concrete material consists of calcareous and siliceous stone, glass fibers and thermoses polyester resin. Polymer concrete can be used in the manufacture of equipment pads, grade level boxes an Related Links Polymer concrete - WikipediaMechanical Properties of Polymer ConcreteExamining Polymer ConcretePolymer concretePolymer Concrete - [Polyphase](https://electricalschool.org/polyphase/) - Polyphase Definition: A polyphase system is a means of distributing alternating current electrical power. Polyphase systems have two or more energized electrical conductors carrying alternating currents with a definite time offset between the peak amplitudes of the wave in eac Related Links polyphase - WiktionaryPolyphase | Define Polyphase at Dictionary.comPolyphase definition and meaning | Collins - [Potential](https://electricalschool.org/potential/) - Potential Definition: The voltage in a circuit. Reference is usually to the AC Voltage. Related Links Voltage - WikipediaElectric potential, voltage (article) | Khan Academy Related Videos Voltage | Introduction to electrical engineering | Electrical engineering | Khan Academy View More Voltage divider | Circuit analysis | Electrical engineering | Khan Academy View More Calculate - [Potential Transformer](https://electricalschool.org/potentialtransformer/) - Potential Transformer Definition: A transformer used to lower the voltage at a set ratio so that the voltage can be measured by instruments and meters at a safe representative level. Related Links Using Potential Transformers – Continental Control Systems, LLCPotential TransformersVoltage Transformer or Potential Transformer TheoryInstrument transformer - WikipediaDifference between Current Transformer & Potential Transformer - [POW](https://electricalschool.org/pow/) - POW Definition: Point-on-Wave. Point-on-wave switching is the process to control moment of switching to minimize the effects (inrush currents, over-voltages). Related Links [TITLE]DigiTool Stream Gateway ErrorPoint on Wave Switch / Controller | Electrical Concepts[TITLE][TITLE]406 Not AcceptablePoint-on-wave controller developed for circuit breaker switching - IEEE Conference PublicationPoint on wave switching | All About Circuits Related Videos - [Photovoltaic System](https://electricalschool.org/photovoltaicsystem/) - Photovoltaic System Definition: A complete set of components for converting sunlight into electricity by the Photovoltaic process, including the array and balance of system devices. Photovoltaic System Related Links How a PV System WorksPhotovoltaic system - WikipediaPhotovoltaic Systems - Renewable Energy WorldPhotovoltaic system - WikiwandSolar Electricity - Photovoltaic Systems and Components, Grid-Connected Solar Electric Systems, - [Pick up ratio](https://electricalschool.org/pickupratio/) - Pick up ratio Definition: The ratio of the limiting values of the characteristic quantity at which the relay resets and operates. This value is sometimes called the differential relay. Pick up ratio Related Links What is differential relay? - QuoraDifferential RelayWhat is Differential Protection Relay? - Description & its Types on the Basis of Principle - [Pilot Channel](https://electricalschool.org/pilotchannel/) - Pilot Channel Definition: A means of interconnecting between relaying points for the purpose of protection. Related Links EPO - European publication server - [Pilot Line](https://electricalschool.org/pilotline/) - Pilot Line Definition: A cord or rope used to pull a heavier rope that will be used to pull a conductor into place. Related Links Pilot line - WikipediaDeluge Valves: Hydraulic vs. Pneumatic Fusible Pilot LinesLabMaster Pilot LinePILOT LINE - CAMPENHydraulics TutorialPilot line - WikipediaDeluge Valves: Hydraulic vs. Pneumatic Fusible Pilot LinesLabMaster Pilot LinePILOT LINE - [Plante Plate (Battery)](https://electricalschool.org/planteplatebattery/) - Plante Plate (Battery) Definition: Plate made of pure lead. Related Links Plante Batteries[TITLE]Gaston Plante and The Lead Acid batteryConstruction of Lead Acid Battery - [PLC](https://electricalschool.org/plc/) - PLC Definition: Programmable Logic Controller. A specialized computer for implementing control sequences using software. Related Links Programmable logic controller - WikipediaEngineering Essentials: What Is a Programmable Logic Controller? | Machine DesignAMCI : Advanced Micro Controls Inc :: What is a PLC?Introduction to Programmable Logic Controllers (PLCs) and the Operational Function of Main System Modules - - [Plug Setting Multiple](https://electricalschool.org/plugsettingmultiple/) - Plug Setting Multiple Definition: A term used in conjunction with electromechanical relays, denoting the ratio of the fault current setting of the relay. Related Links Pick Up Current | Current Setting | Plug Setting Multiplier and Time Setting Multiplier of RelayPick-up Current, Plug Setting Multiplier (PSM) and Time Setting Multiplier (TSM) | Electrical Concepts[TITLE]What is - [Pocket Current Transformer](https://electricalschool.org/pocketcurrenttransformer/) - Pocket Current Transformer Definition: A round or toroidal core transformer mounted on bushings of power transformers, bulk oil circuit breaker, and other dead tank circuit breakers. These transformers are placed in pockets of these elements they are mounted on where the pocket length is measu Related Links [TITLE]Pocket Current Transformer|Girton Manufacturing - [Photovoltaic Cell](https://electricalschool.org/photovoltaiccell/) - Photovoltaic Cell Definition: The smallest semiconductor element within a photovoltaic module to perform the immediate conversion of light into electrical energy (DC Voltage and DC Current). Photovoltaic Cell Related Links Photovoltaics - Wikipedia Related Videos How a photovoltaic cell works View More How do solar panels work? - Richard Komp View More Solar energy / - [Photovoltaic Concentrator](https://electricalschool.org/photovoltaicconcentrator/) - Photovoltaic Concentrator Definition: A Photovoltaic module that uses optical elements to increase the amount of sunlight incident on a Photovoltaic cell. Concentrating arrays must track the sun. Efficiency is increased, but lifespan is decreased because of the high heat. Photovoltaic Concentrator Related Links Concentrator photovoltaics - WikipediaConcentrator Photovoltaics: The Next Step Towards Better Solar Power - [Photovoltaic Conversion Efficiency](https://electricalschool.org/photovoltaicconversionefficiency/) - Photovoltaic Conversion Efficiency Definition: The ratio of electric energy produced by a photovoltaic device to the energy from sunlight incident unpn the cell. Photovoltaic Conversion Efficiency Related Links Solar Performance and Efficiency | Department of EnergyPhotovoltaic Conversion Efficiency - Advanced Solar TrainingSolar cell efficiency - Wikipedia[TITLE]Photovoltaic conversion efficiency in copper-phthalocyanine/ perylenetetracarboxylic acid benzimidazole heterojunction solar - [Photovoltaic Efficiency](https://electricalschool.org/photovoltaicefficiency/) - Photovoltaic Efficiency Definition: The ratio of electric power produced by a cell at any instant to the power of the sunlight striking the photovoltaic cell. This is typically 9% to 14% for commercially available cells. Photovoltaic Efficiency Related Links HTTP Error 400How Efficient Will Solar PV Be In The Future? 10-Year Predictions For The Industry - [Photovoltaic Module](https://electricalschool.org/photovoltaicmodule/) - Photovoltaic Module Definition: The smallest environmentally protected, essentially planar assembly of solar cells and ancillary parts, such as interconnections, terminals and protective devices such as diodes intended to generate dc power under unconcentrated sunlight. The structural Photovoltaic Module Related Links Solar PV ModulesSolar panel - WikipediaCells, Modules, and ArraysDefinition: PV module | Open Energy Information - [Photovoltaic Stand-Alone System](https://electricalschool.org/photovoltaicstand-alonesystem/) - Photovoltaic Stand-Alone System Definition: An autonomous or hybrid photovoltaic system not connected to a grid. The system may or may not have storage but most have require a battery. Photovoltaic Stand-Alone System Related Links Stand-alone power system - WikipediaBasic Knowledge | Stand-Alone Photovoltaic Systems - SolarServerStand Alone PV System for Off-grid PV Solar PowerDesigning a - [Peak to Peak](https://electricalschool.org/peaktopeak/) - Peak to Peak Definition: The amplitude of the ac wave form from its positive peak to its negative peak. Related Links What is peak-to-peak (pk-pk)? - Definition from WhatIs.comPeak to Peak Voltage Calculator - Electrical Engineering & Electronics ToolsMeasuring the Sine Waveif an ac wave form of 3.4 divisions from peak to peak and the - [PED](https://electricalschool.org/ped/) - PED Definition: Power Electronic Device. Related Links POWER ELECTRONIC DEVICESPower Semiconductor DevicesPower electronics - WikipediaPower Electronic Devices in Modern Power Systems - IEEE Conference Publication Related Videos From Power Electronics Devices to Electronic Power Systems ? A CPES Perspective View More Boost Converters and Buck Converters: Power Electronics View More Power Electronic Applications View More - [Phase Angle](https://electricalschool.org/phaseangle/) - Phase Angle Definition: The angular displacement between a current and voltage waveform, measured in degrees or radians. Related Links Interactive Illustrated Interplanetary Guide and Calculator for KSP Related Videos Phase Shift in AC Signals View More Concepts of Phase & Phase Difference in AC View More Phase angle View More Electrical Engineering: Ch 10 Alternating - [Phase Angle Transducer](https://electricalschool.org/phaseangletransducer/) - Phase Angle Transducer Definition: A transducer used for the measurement of the phase angle between two a.c. electrical quantities having the same frequency. Related Links 406 - ?????? ??????????????? MIME ????????????[TITLE]IEC 60050 - International Electrotechnical Vocabulary - Details for IEV number 313-03-07: "phase angle transducer" Related Videos Electrical Engineering: Ch 10 Alternating Voltages & Phasors - [Photovoltaic Array](https://electricalschool.org/photovoltaicarray/) - Photovoltaic Array Definition: An interconnected system of photovoltaic modules that function as a single electricity producing unit. The modules are assembled in a discrete structure, with common mechanical support or mounting. In small systems, an array can consist of a single modu Photovoltaic Array Related Links Photovoltaic Array Fundamentals | ETAPCells, Modules, and ArraysPhotovoltaic system - [Parallel Connection](https://electricalschool.org/parallelconnection/) - Parallel Connection Definition: In the case of DC circuits, a way of joining two or more electrical devices or wires by connecting positive leads and negative leads together. Related Links Parallel Circuits | Circuits | Electronics Video LectureSeries and parallel circuits - WikipediaTwo Types of Connections[TITLE] Related Videos Series vs Parallel Circuits View More Series - [Parametric Conjuctive Test](https://electricalschool.org/parametricconjuctivetest/) - Parametric Conjuctive Test Definition: A conjunctive test that ascertains the range of values of each parameter for which the test meets specific performance requirements. Related Links What is the difference between a parametric and a nonparametric test? | XLSTAT[TITLE]Parameterized Model-Checking of Timed Systems with Conjunctive Guards - Semantic ScholarDefinition Conjunctive Test- Electric CalcsGlossary of Electrical - [Parking Bushing](https://electricalschool.org/parkingbushing/) - Parking Bushing Definition: A bushing that is designed to accept a 200a elbow. Parking bushings are used to "Park" a hot cable that is terminated with a 200 Amp rated elbow. Related Links [TITLE] - [Parking Stand](https://electricalschool.org/parkingstand/) - Parking Stand Definition: A metal bracket, usually made of steel, that is used to support a parking bushing that in turn is used to "Park" a medium voltage cable that is terminated with an 200 Amp rated elbow. Parking Stands are usually furnished mounted to the front panel of 200 - [Pasted Plate (Battery)](https://electricalschool.org/pastedplatebattery/) - Pasted Plate (Battery) Definition: Paste in which the active material is applied as a paste to a conductive grid. Related Links Lead: Battery Manufacturing eTool - Plate Processing - Grid PastingHefra - About batteries: the pasted plateNegative and Positive Plate Construction Review | Engineers EdgePasted positive plate of lead–acid battery: General analysis of discharge process - [PCB](https://electricalschool.org/pcb/) - PCB Definition: Printed circuit board. Related Links Printed circuit board - WikipediaPCB Basics - learn.sparkfun.com Related Videos Basic Soldering Technique View More Printed Circuit Board Design : Beginner. Step by step View More Make Your Own Printed Circuit Boards on a Laserjet! View More EEVblog #939 - How Is A PCB Manufactured? View More Designing - [PE](https://electricalschool.org/pe/) - PE Definition: Polyethylene. PE is a thermoplastic wire and cable insulating material that is also used for cable jacketing. Related Links Polyethylene - WikipediaEverything You Need To Know About Polyethylene (PE)Polyethylene | chemical compound | Britannica.comPolyethylene Related Videos What is Polyethylene? View More Low Density Polyethylene (LDPE) Production Overview View More Production and uses of - [Output Current of a transducer](https://electricalschool.org/outputcurrentofatransducer/) - Output Current of a transducer Definition: The current produced by the transducer which is an analog function of the measurand. Related Links Error - TI.com[TITLE]Current sensor - Wikipedia Related Videos Transducers View More What Is a Transducer? View More ABB CC-E Series Signal Transducers - A GalcoTV Overview View More How a Current Switch Current - [Output Load](https://electricalschool.org/outputload/) - Output Load Definition: The total effective resistance of the circuits and apparatus connected externally across the output terminals. Related Links Electrical load - Wikipedia[TITLE]The resource cannot be displayedOutput Load - Murata Power | DigiKeyIs voltage divider output affected by load resistance? - Electrical Engineering Stack Exchange Related Videos 600W SMPS First No Load Output Voltages - [Output series mode interface voltage](https://electricalschool.org/outputseriesmodeinterfacevoltage/) - Output series mode interface voltage Definition: An unwanted alternating voltage appearing in series between the output terminals and the load. Related Links [TITLE][TITLE][TITLE][TITLE]Comparison of output drivers for high-speed serial links - IEEE Conference PublicationOpen collector - Wikipedia[TITLE]California Instruments MX Series Specifications | AMETEK Programmable Power[TITLE] Related Videos Xantrex or Heart Interface No power or voltage - [Output Span](https://electricalschool.org/outputspan/) - Output Span Definition: The algebraic difference between the lower and upper nominal values of the output signal. Related Links [TITLE]All Sensors | Pressure Sensor Manufacturer | All SensorsSensor Fundamentals Related Videos How to Calibrate and Span a Pressure Transmitter View More How to setup SPAN ports View More How to Calibrate and Span a Differential - [Over current Relay](https://electricalschool.org/overcurrentrelay/) - Over current Relay Definition: A protection relay whose tripping decision is related to the degree by which the measured current exceeds a set value. Related Links Over Current Relay Working Principle TypesTypes and Applications Of Overcurrent Relay (part 1)Protective relay - Wikipedia Related Videos Overcurrent Relay & its types,BTech by Ms. Disha Mehtani View More - [Overcharge (battery)](https://electricalschool.org/overchargebattery/) - Overcharge (battery) Definition: The forcing of current through a cell after all the active material has been converted to the charged state (after 100% charged). The result will be the decomposition of water in the electrolyte into hydrogen and oxygen gas Related Links Are You Overcharging Your Laptop Battery?What will happen if a phone battery - [Oxygen Recombination](https://electricalschool.org/oxygenrecombination/) - Oxygen Recombination Definition: The process by which oxygen generated at the positive plate during charge reacts with the pure lead material of the negative plate and in the presence of sulfuric acid and reforms water. Related Links The Basic Chemistry of Gas Recombination in Lead-Acid BatteriesA review of oxygen recombination in the sealed lead-acid cellA - [Pad Mounted Transformer](https://electricalschool.org/padmountedtransformer/) - Pad Mounted Transformer Definition: A transformer that is mounted on a pad (usually concrete or polycrete) that is used for underground service. Pad mounted transformers are available in single phase and three phase configurations. Related Links Padmount transformer - WikipediaHoward Industries Utility Products Division Related Videos Pad Mounted Transformers View More How to Change Out - [Open-Circuit Voltage (Battery)](https://electricalschool.org/open-circuitvoltagebattery/) - Open-Circuit Voltage (Battery) Definition: The voltage of a cell or battery when it is not delivering or receiving power. Related Links Open-circuit voltage - WikipediaHow to Test Open Circuit Battery Voltage | It Still Runs[TITLE]Time efficient state-of-charge estimation using open circuit voltage and the logarithmic modelling for battery management system - UBC Library Open CollectionsBattery - [Operating time Characteristic](https://electricalschool.org/operatingtimecharacteristic/) - Operating time Characteristic Definition: The curve depicting the relationship between different values of the characteristic quantity applied to a relay and the corresponding values of operating time. Related Links 406 - Client browser does not accept the MIME type of the requested page.Over Current Relay and Its Characteristics | Electrical Concepts[TITLE]The Analysis of Space-time Characteristics - [OPGW](https://electricalschool.org/opgw/) - OPGW Definition: Optical Ground Wire a ground wire that includes optical fibers to provide a communications link. Related Links Optical ground wire - WikipediaItem # 110AY51ACS-2C, OPGW Optical Ground Wire - Type SST On American Wire GroupPrysmian Australia Pty Ltd » Optical Ground Wire Related Videos AFL Optical Ground Wire (OPGW) View More OPGW- Optical - [OSHA 29 CFR 1910, Subpart S-Electrical](https://electricalschool.org/osha29cfr1910subparts-electrical/) - OSHA 29 CFR 1910, Subpart S-Electrical Definition: Occupational Safety and Health Standards. Section 1910 Subpart S-Electrical Standard number 1910.333 specifically addresses Standards for Work Practices. Related Links [TITLE][TITLE]Introduction. - 1910.301 | Occupational Safety and Health Administration Related Videos What Is Arc Flash Training? View More Arc Flash, Electrical Safety, NFPA70E, Arc Flash Training, Arc Flash - [OSI 7-layer model](https://electricalschool.org/osi7-layermodel/) - OSI 7-layer model Definition: The Open System Interconnection 7-layer model is a model developed by ISO for modeling of a communications network. Related Links The 7 Layers of the OSI Model - Webopedia Study GuideWhat is OSI model (Open Systems Interconnection)? - Definition from WhatIs.comosi 7 layer modelWhat are OSI Model & ISO 7 Layers - [Output common mode interface voltage](https://electricalschool.org/outputcommonmodeinterfacevoltage/) - Output common mode interface voltage Definition: An unwanted alternating voltage which exists between each of the output terminals and a reference point. Related Links Understanding Common-Mode Signals - Tutorial - MaximTI Precision Labs – Op Amps: Fully Differential Amplifiers – Input and Output, Common-Mode and Differential-Swing Analysis | TI Training[TITLE]Common Mode Voltage in Signal ConditioningDifferential - [OHL](https://electricalschool.org/ohl/) - OHL Definition: Overhead Line Related Links Overhead line - WikipediaOverhead lines (OHL) | National Grid UKOHL training course - DNV GL[TITLE]TRAM Power | Overhead Line system Related Videos OTLM (Overhead Transmission Line Monitoring) View More Henkels & McCoy - Power Transmission Line Wire Stringing View More Overhead line connection work View More OLE Testing & - [Ohm](https://electricalschool.org/ohm/) - Ohm Definition: A unit of electrical resistance defined as the resistance of a circuit with a voltage of one volt and a current flow of one ampere. Related Links Ohm - WikipediaOhm | Units of Measurement Wiki | FANDOM powered by WikiaWhat is ohm? - Definition from WhatIs.comOhm | unit of energy measurement | Britannica.comOhm - [Ohm's Law](https://electricalschool.org/ohmslaw/) - Ohm's Law Definition: E=IR; I=E/R; R=E/I; Where E = Voltage impressed on a circuit, I = current flowing in a circuit and R = circuit resistance. Ohm's Law is used for calculating voltage drop, fault current and other characteristics of an electrical circuit. Related Links Ohm's law - WikipediaOhms Law Tutorial and Power in Electrical - [Oil Breakers](https://electricalschool.org/oilbreakers/) - Oil Breakers Definition: A type of high voltage circuit breaker using mineral oil as both an insulator and an interrupting medium. Typically, these units were produced for use at voltages from 35 kV to as much as 345 kV. Generally, these are older types and no longer produced for Related Links Electric Power eTool: Substation - [Omni directional Antenna](https://electricalschool.org/omnidirectionalantenna/) - Omni directional Antenna Definition: This is like a dipole antenna because it radiates its signal 360 degrees horizontally; however, its signal is flatter than a dipole's allowing for higher gain. Related Links Omnidirectional antenna - WikipediaOmni-Directional Antennas vs Uni-Directional (Yagi) Antennas. - WilsonAmplifiers.comWhat is the difference between an omnidirectional antenna and a directional antenna?Omni Antenna - [On Load Tap Changer](https://electricalschool.org/onloadtapchanger/) - On Load Tap Changer Definition: A tap changer that can be operated while the transformer is supplying load. Related Links Tap changer - WikipediaOn-load tap-changers -4 Essential Features of Transformer On-Load Tap ChangerTap changer Related Videos Function Principle of the OLTC View More No Load & On Load Tap Changer In Transformer View More Guidelines - [One-Axis Tracking (Photovoltaic)](https://electricalschool.org/one-axistrackingphotovoltaic/) - One-Axis Tracking (Photovoltaic) Definition: A system capable of rotating about one axis for tracking of the sun. Related Links Soltec Single-Axis Tracker - Soltec.comSolar tracker - Wikipedia[TITLE] Related Videos Renewable Energy: Single-Axis Tracker View More Building A Solar Tracker View More Arctech Horizontal Single Axis Tracker View More 1-AXIS HORIZONTAL TRACKER View More DIY single - [Open Link](https://electricalschool.org/openlink/) - Open Link Definition: A fuse used on overhead electrical distribution systems that is held in place by two springs. This device and its holder have generally been replaced by Fused Cutouts where the fuse element in an arc tube. Related Videos Secondary Voltage Fuse Open View More 2008-2011 Toyota Corolla Fuse Link Replacement Fusible Alternator - [Nominal Capacity (Battery)](https://electricalschool.org/nominalcapacitybattery/) - Nominal Capacity (Battery) Definition: A designation by the battery manufacturer which helps identify a particular cell model and also provides an approximation of capacity. It is normally expressed in ampere-hours at a given discharge current. Related Links Battery CapacityNominal Battery Capacity[TITLE]Battery Definitions – Battery UniversityElectric battery - Wikipedia Related Videos What Is The Nominal Voltage - [Nominal Voltage (Battery)](https://electricalschool.org/nominalvoltagebattery/) - Nominal Voltage (Battery) Definition: Voltage of a fully charged cell or battery when delivering rated capacity at a specific discharge rate. The nominal voltage per cell is 2V for Lead Acid, 1.2V for Nickel-Cadmium, 1.2V for Nickel Metal Hydride and 3.9V for Lithium Ion (small cells only). Related Links Nominal Voltage of Lithium Ion Batteries[TITLE]Battery - [Non-Halogen Ethylene Copolymers](https://electricalschool.org/non-halogenethylenecopolymers/) - Non-Halogen Ethylene Copolymers Definition: Non-Halogen Ethylene Copolymers combine attributes of polyethylene and polypropylene to produce cable insulating and jacketing compounds with superior fire protection. Unlike other ethylene compounds, these do not contain chemicals from the Halogen group Related Links Non?halogen?containing flame?retardant ethylene?propylene...IIS 7.5 Detailed Error - 406.0 - Not Acceptable[TITLE]Calcium-based hydrated minerals: Promising halogen-free flame - [Notching Relay](https://electricalschool.org/notchingrelay/) - Notching Relay Definition: A relay which switches in response to a specific number of applied impulses. Related Links Integrail Glossary - Notching Relaynotching relay – Termwiki, millions of terms defined by people like youNOTCHING RELAY [2 records] - TERMIUM Plus® — Search - TERMIUM Plus®dict.cc dictionary :: notching relay :: German-English translationDOLD - [NPS](https://electricalschool.org/nps/) - NPS Definition: Negative Phase Sequence Related Links Symmetrical components - Wikipedia[TITLE]406 - Client browser does not accept the MIME type of the requested page.[TITLE]A review of negative sequence current - IEEE Conference PublicationEffects of Negative Sequence Currents in Machines | Electrical Theory and Practice Tests Related Videos Principles of Symmetrical Components Part 1a View More - [Off Peak Power](https://electricalschool.org/offpeakpower/) - Off Peak Power Definition: Power supplied during designated periods of low power system demand. Related Links Peak demand - Wikipedia[TITLE]Time of Use Hours & PricingPeak and Off Peak Electricity Times - Origin EnergyTime-of-Use rate plans Related Videos Origin Answers - How to save money with off peak power | Origin Energy View More Energy Conservation - [MW](https://electricalschool.org/mw/) - MW Definition: Mega Watt, one million watts. Related Links Megawatt-day (unit MWd) - Energy Unit - Nuclear PowerWhat is a Megawatt and a Megawatt-Hour? | Cleanenergyauthority.comWatt - WikipediaWhat is a power unit "megawatt" (MW)How many units is 1 megawatt? - Quora Related Videos Electric Units View More Watts Unit, Microwatt, Milliwatt, Killowatt, Megawatt View More - [MWH](https://electricalschool.org/mwh/) - MWH Definition: Mega Watt Hour, the use of one million watts for one hour. Related Links What is a Megawatt and a Megawatt-Hour? | Cleanenergyauthority.comWhat is a Megawatt (MW) and what is a Megawatt hour (MWh)?Megawatt hour - BallotpediaOne Megawatt Hour Related Videos What is a Kilowatt Hour? View More What's the difference between a - [Nameplate Rating](https://electricalschool.org/nameplaterating/) - Nameplate Rating Definition: The normal maximum operating rating applied to a piece of electrical equipment. This can include Volts, Amps, horsepower, kW, or any other specific item specification for the equipment. Related Links Nameplate capacity - WikipediaNameplate Capacity or Rated Output | energymagMarch '98 Problem Of The Month--Nameplate CapacitiesGeneral Capacitor Nameplate Rating | Electrolytic CapacitorImportant - [NEC](https://electricalschool.org/nec/) - NEC Definition: National Electrical Code (NFPA-70). Related Links NFPA 70®: National Electrical Code®List of NFPA Codes and StandardsNational Electrical Code - WikipediaThe resource cannot be displayed Related Videos Introduction into Electrical Safety Standards - NFPA 70E, 70 NEC, OSHA View More National Electrical Code View More NFPA 70 - The National Electrical Code View More - [NEMA](https://electricalschool.org/nema/) - NEMA Definition: National Electrical Manufacturers Association. NEMA provides a forum for the standardization of electrical equipment and is located at 2101 L Street N.W., Washington, DC, 20037. Related Links About the National Electrical Manufacturers Association - NEMANational Electrical Manufacturers Association - WikipediaNEMA National Electrical Manufacturers AssociationNational Electrical Manufacturers Association: Private Company Information - Bloomberg Related - [Neutral Conductor](https://electricalschool.org/neutralconductor/) - Neutral Conductor Definition: In multiphase circuits, the conductor used to carry unbalanced current. In single-phase systems, the conductor used for a return current path. Related Links Rules for dimensioning, disconnecting and protecting the neutral conductor | EEPSizing the neutral conductor - Electrical Installation Guide Related Videos Electric Code Violation: Sharing of Neutral Wires Creates Hazardous - [Neutral Ground Reactor](https://electricalschool.org/neutralgroundreactor/) - Neutral Ground Reactor Definition: A reactor used to connect the neutral point of a three phase system to ground. Neutral Ground Reactors are used to limit ground fault current on Neutral Grounded (WYE) systems. Related Links Air Core Neutral Grounding Reactors; Home; HomeWhat is the main reason of using NGR in a power transformer? - - [Neutral Grounding Resistor](https://electricalschool.org/neutralgroundingresistor/) - Neutral Grounding Resistor Definition: A device that connects the neutral point of a three phase system to ground. Neutral Grounding Resistors are used to limit ground fault current on Neutral Grounded (WYE) systems. Related Links [TITLE][TITLE]METAL DEPLOYE RESISTOR » NEUTRAL EARTHING – GROUNDING RESISTORNeutral Grounding Resistors; Home; HomeNeutral Grounding Resistor - Powerohm Resistors, Inc.[TITLE]Neutral Earthing - [NFPA](https://electricalschool.org/nfpa/) - NFPA Definition: The National Fire Protection Association. Related Links About NFPANational Fire Protection Association (NFPA) - Inicio | Facebook Related Videos About NFPA - Part 1 View More Fire Power - Revisited! View More NFPA Journal - Hazard Labeling Guidelines in NFPA 704 View More NFPA's New Electrical Safety PSA View More We Are NFPA - [Momentary Rating](https://electricalschool.org/momentaryrating/) - Momentary Rating Definition: The rating of a device to withstand momentary, very high current, without incurring damage. Related Links What is meant by "Momentary Current" ratings of a Medium voltage HVL switch?What do symmetrical, asymmetrical, momentary, interrupting, close & latch ratings mean? | Power Systems EngineeringNew disconnect switch with exceptional momentary rating - IEEE Journals - [Motion Resistant Conductor](https://electricalschool.org/motionresistantconductor/) - Motion Resistant Conductor Definition: ACSR with Motion Resistant Variable Profile. Related Links Resistivity and Electrical ConductivityHow is the motion of an electron through a conductor retarded by its resistance? - QuoraResistance - WikipediaConductors, Insulators, and Electron Flow | Basic Concepts Of Electricity | Electronics Textbook[TITLE] Related Videos Electric Potential: Visualizing Voltage with 3D animations View - [MOV](https://electricalschool.org/mov/) - MOV Definition: Metal Oxide Varistor Related Links Metal Oxide Varistor MOVMetal Oxide Varistor (MOV), Basics, Working, Specifications, Performance, FeaturesVaristor and the Metal Oxide Varistor TutorialVaristor - Wikipedia Related Videos What is a Metal-Oxide Varistor and how it protects a drive | Galco Industrial Electronics View More How a Surge Protector Works (Metal Oxide Varistor) View - [Multi-Crystalline (Photovoltaic)](https://electricalschool.org/multi-crystallinephotovoltaic/) - Multi-Crystalline (Photovoltaic) Definition: A material that is solidified at such a rate that many small crystals (crystallites) form. The atoms within a single crystallite are symmetrically arranged, whereas the crystallites are jumbled together. These numerous grain boundaries reduce the device Related Links Mono Crystalline or Poly / Multi Crystalline Solar Panels?Which Solar Panel Type is - [Multi-element transducer](https://electricalschool.org/multi-elementtransducer/) - Multi-element transducer Definition: A transducer having two or more measuring elements. The signals from the individual elements are combined to produce an output signal corresponding to the measurand. Related Links [TITLE]Multiple-element transducers. - PubMed - NCBI[TITLE]Towards an integrated hand-held multi-element array transducer for ultrasound imaging - IET Conference PublicationDirection Study of Multi-element Linear Transducer Array - [Multi-section transducer](https://electricalschool.org/multi-sectiontransducer/) - Multi-section transducer Definition: A transducer having two or more independent measuring circuits for one or more functions. Related Links Transducer - WikipediaGlossary of Electrical Terms Related Videos Ultrasound Physics - Transducer arrays View More Ultrasound Physics - Transducer arrays View More - [Multi-shot reclosing](https://electricalschool.org/multi-shotreclosing/) - Multi-shot reclosing Definition: A re-closing scheme that permits more than one re-closing operation of a CB after a fault occurs before lock-out occurs. Related Links [TITLE]406 - Client browser does not accept the MIME type of the requested page.MULTI-SHOT RECLOSING RELAY HAVING MEANS FOR REMEMBERING TRIP AND RECLOSURE STATUS IN THE EVENT OF LOSS OF - [MVA](https://electricalschool.org/mva/) - MVA Definition: Apparent Power expressed in Million Volt-Amps. Related Links What is apparent power? - Definition from WhatIs.comTrue, Reactive, and Apparent Power | Power Factor | Electronics TextbookAC power - WikipediaTrue Power, Apparent Power, and Power Factor | AMETEK Programmable Power BlogActive, Reactive, Apparent and Complex Power. Explanation & Formulas Related Videos Difference between Real, - [Megohmmeter](https://electricalschool.org/megohmmeter/) - Megohmmeter Definition: A testing device that applies a DC voltage and measures the resistance (in millions of ohms) offered by conductor's or equipment insulation. Related Links Megohmmeter - WikipediaMEGOHMMETER; MEGOHMMETER - the megohmmeter is made for insulation resistance test Related Videos How to -Megohmmeter View More Cheap Amazon Megohmmeter Review View More What is MEGOHMMETER? - [Melt Time](https://electricalschool.org/melttime/) - Melt Time Definition: The time needed for a fuse element to melt, thereby initiating operation of the fuse. Also known as Fuse Melt Time. Related Links Time to reach Melting point.... - Metal and Metallurgy engineering - Eng-Tips[TITLE] - [Mercury Vapor Lamp (MV)](https://electricalschool.org/mercuryvaporlampmv/) - Mercury Vapor Lamp (MV) Definition: An HID light source in which the arc tube's primary internal element is Mercury Vapor. Related Links Mercury-vapor lamp - WikipediaThe Mercury Vapor Lamp - How it works & history Related Videos The Mercury Vapor Lamp 1901 View More Mercury Vapor (MV) Light Bulbs Part-1 2011 View More Old vs - [Metal Clad (Switchgear)](https://electricalschool.org/metalcladswitchgear/) - Metal Clad (Switchgear) Definition: An expression used by some manufactures to describe a category of medium voltage switchgear equipment where the circuit breakers are all enclosed in grounded, sheet-steel enclosures. Such enclosures may be suitable for indoor use or may be enclosed in an Related Links Metal-clad Switchgear: The Industry’s Medium Voltage Workhorse - Schneider - [Metal Enclosed (Switchgear)](https://electricalschool.org/metalenclosedswitchgear/) - Metal Enclosed (Switchgear) Definition: An expression used by some manufacturers to describe a category of low voltage, 600 volt class switchgear equipment, where the circuit breakers are all enclosed in grounded, sheet-steel enclosures. Such enclosures normally are suitable only for indoor use Related Videos SecoGear Metal Clad Switchgear View More Eaton Medium Voltage Metal Enclosed - [Metal Halide Lamp (MH)](https://electricalschool.org/metalhalidelampmh/) - Metal Halide Lamp (MH) Definition: An HID light source in which the arc tube's primary internal element is Mercury Vapor in combination with Halides (salts or iodides) of other metals such as Sodium or Scandium. Related Links How do metal halide lamps work? | Mid-Wattage Metal Halide | Lighting Answers | NLPIPMetal-halide lamp - WikipediaThe - [Metering (non-tariff)](https://electricalschool.org/meteringnon-tariff/) - Metering (non-tariff) Definition: Values computed depending on the values of digital or analog inputs during variable periods. Related Links Net Energy Metering[TITLE]2018 Net Metering in California: NEM 2.0 Explained | EnergySageCan a "Value of Solar Tariff" Replace Net Energy Metering? | Greentech Media Related Videos Net Metering vs. Value of Solar Tariff (VOST) Billing View - [Metering (tariff)](https://electricalschool.org/meteringtariff/) - Metering (tariff) Definition: Energy values computed from digital and/or analog inputs during variable periods and dedicated to energy measurement for billing purposes. Related Links Electricity meter - WikipediaNet Energy Metering Multiple Tariff (NEMMT)What`s the Difference Between Net Metering and Feed-In Tariffs? - Energy InformativeA Rising Tension: 'Value-of-Solar' Tariff Versus Net Metering | Greentech MediaNet Energy - [MHR (Lighting)](https://electricalschool.org/mhrlighting/) - MHR (Lighting) Definition: Mounting Height Ratio Related Links spacing-to-mounting-height ratio, S/MH | IES[TITLE]INTERIOR LIGHTING DESIGN A STUDENT'S GUIDELight Guide: Useful Formulas[TITLE]The resource cannot be displayedLighting Definitions - Resources - Acuity BrandsIET Forums - Space to Height Ratio[TITLE] - [Mid Point Sectioning Substation](https://electricalschool.org/midpointsectioningsubstation/) - Mid Point Sectioning Substation Definition: A substation located at the electrical interface of two sections of electrified railway. It contains provision for the coupling of the sections electrically in the event of loss of supply to one section. Related Links Overhead line - Wikipedia[TITLE]Section 09 - Traction Electrification System | Electrical Substation | Track (Rail - [Mobile Transformer](https://electricalschool.org/mobiletransformer/) - Mobile Transformer Definition: A transformer that often is mounted on a leak proof base and can be installed and operated in a semi-trailer, box truck or sea freight container. Related Links Mobile Transformer – Brandon & Clark, Inc.Mobile and Specialty Transformers | Jordan TransformerMobile Transformer: Futuristic Tent + Truck + Trailer Home - [Main Protection](https://electricalschool.org/mainprotection/) - Main Protection Definition: The protection system which is normally expected to operate in response to a fault in the protected zone. Related Links Backup protection Related Videos Whole House Surge Protection View More Whole House Surge Protection View More - [Maximum Permissible Values of the input current and voltage](https://electricalschool.org/maximumpermissiblevaluesoftheinputcurrentandvoltage/) - Maximum Permissible Values of the input current and voltage Definition: Values of current and voltage assigned by the manufacturer which the transducer will withstand indefinitely without damage. Related Links [TITLE]Absolute Maximum Ratings | Electronics Basics | ROHM - global - Rohm.com406 - Client browser does not accept the MIME type of the requested page. Related - [MCC](https://electricalschool.org/mcc/) - MCC Definition: Motor Control Center Related Links Motor control center - WikipediaThe Basics of Motor Control Centers (MCCs) | EEPDrives for Integration in Motor Control Centers - Drive Technologies - SiemensLow Voltage Motor Control Centers Related Videos MCC Electrical View More Motor Control 101 View More Eaton Cutler-Hammer Freedom FlashGuard MCC Motor Control Center View - [MCCB](https://electricalschool.org/mccb/) - MCCB Definition: Molded Case Circuit Breaker Related Links The Basics of Molded Case Circuit Breakers | Electrical Construction & Maintenance (EC&M) MagazineMolded Case Circuit Breaker (MCCB) Basic Knowledge | LinkedIn Related Videos Molded Case Circuit Breakers Basics - EasyPower View More EATON Cutler-Hammer "G-Series" Molded Case Circuit Breakers - A GalcoTV Overview View More MCCB - [Measuring Element](https://electricalschool.org/measuringelement/) - Measuring Element Definition: A unit or module of a transducer which converts the measurand, or part of the measurand into a corresponding signal. Related Links Definition of measuring element - mindat.org glossaryMeasuring element - International Dictionary of Marine Aids to Navigationmeasuring element definition | English definition dictionary | ReversoPrimary measuring element | Article about primary - [Measuring Range](https://electricalschool.org/measuringrange/) - Measuring Range Definition: The part of the span where the performance complies with the accuracy requirements. Related Links Measuring range | KSBMeasuring range | Micro-Epsilon MeasurementRadar Basics - Minimal Measuring RangeWhat is the "measuring range" of my gas monitor? - The MonitorMeasuring rangesProbes for all measuring ranges | Testo, IncList of length, distance, or range - [Measuring Relay](https://electricalschool.org/measuringrelay/) - Measuring Relay Definition: An electrical relay intended to switch when its characteristics quantity, under specified conditions and with a specified accuracy attains its operating value. Related Links Measuring Relay Contact Resistance | Panasonic Industrial DevicesDesign of a protection relay for use with a measuring CT - IEEE Conference Publication Related Videos How to Test a - [Medium Distribution (Lighting)](https://electricalschool.org/mediumdistributionlighting/) - Medium Distribution (Lighting) Definition: A luminary is classified as having a medium light distribution when its max candlepower point falls between 2.25MH 3.75MH TRL. The maximum luminaire spacing-to-mounting height ratio is generally 7.5 or less. Related Links LED Distribution Types – EYE LightingWhat are Light Distribution Types? - AtlantaLightBulbs.comArea Light Distribution Pattern Types – Throw - [Medium Voltage](https://electricalschool.org/mediumvoltage/) - Medium Voltage Definition: An electrical system or cable designed to operate between 1kv and 38kv. Related Links | Control EngineeringDesigning medium-voltage electrical systems | Schneider Electric406 - Client browser does not accept the MIME type of the requested page. Related Videos Medium voltage switchgear NXAIR View More Different Methods of Operating Medium Voltage Equipment View - [Lumen](https://electricalschool.org/lumen/) - Lumen Definition: Standard unit of measure for light flux or light energy. Lamp light output is measured in Lumens. Related Links Lumen (unit) - WikipediaLumen (unit) - WikiwandLumen | unit of energy measurement | Britannica.comWhat Are Lumens? Lumens Chart, Definition & Light Bulb Facts at Lumens.comWhat is lumen? - Definition from WhatIs.comWhat is the difference - [Lumens Per Watt (LPW)](https://electricalschool.org/lumensperwattlpw/) - Lumens Per Watt (LPW) Definition: The ratio of light energy output (Lumens) to electrical energy input (Watts). Related Links Here are some lumen per watt (LPW) targets for common LEDsLuminous efficacy - WikipediaPhilips Lighting - EcoVantagePhilips' 200 lumens-per-watt prototype LED lamp is the world's most efficient - ExtremeTech Related Videos 175 lumens per watt Cree - [Luminaire](https://electricalschool.org/luminaire/) - Luminaire Definition: A complete lighting unit consisting of a light source with a means of distribution (reflector and/or refractor), lamp positioning (socket), lamp protection (housing) and a provision for power connection. Related Links Understanding Luminaires and Lamps | Electrical Contractor Magazine[TITLE]Luminaire | Define Luminaire at Dictionary.comLuminaire | Definition of Luminaire by Merriam-Websterluminaire | Definition of - [Luminance](https://electricalschool.org/luminance/) - Luminance Definition: In a direction and at a point of a real or imaginary surface The quotient of the luminous flux at an element of the surface surrounding the point, and propagated in directions defined by an elementary cone containing the given direction, multiplied by t Related Links Luminance - WikipediaLuminance vs. IlluminanceDefine the Difference - [LV](https://electricalschool.org/lv/) - LV Definition: Low Voltage Related Links Low voltage - WikipediaWhat's the difference between line voltage and low voltage (12v/ 24v) lighting?QUALITY LOW VOLTAGE SYSTEMSLow Voltage Systems - Sprig Electric Related Videos Lutron low voltage switching View More How to Troubleshoot a Low Voltage Lighting System with a Clamp Multimeter View More How to Install Low - [MAC address](https://electricalschool.org/macaddress/) - MAC address Definition: Media Access Control address is a unique numeric identifier assigned to each device connected to an Ethernet network. It is used for data transmission and security functions. Related Links MAC address - WikipediaWhat is a MAC Address?MAC Address (Media Access Control Address) DefinitionHow to find a MAC address | Answer | NETGEAR - [Limiting Value of the output current](https://electricalschool.org/limitingvalueoftheoutputcurrent/) - Limiting Value of the output current Definition: The upper limit of the output current which cannot, by design be exceeded under any conditions. Related Links Current limiting - Wikipedia[TITLE][TITLE]LED Current Limiting Resistors - SparkFun ElectronicsUsing the Power Supplyamperage - Batteries & Output Current Limiting - Electrical Engineering Stack ExchangeOutput current limit | Microchip Related Videos - [Line Hose](https://electricalschool.org/linehose/) - Line Hose Definition: A rubber dielectric cover for conductor that is used to electrically isolate a worker from an energized conductor. Line hose is made by W.H. Salisbury & Company. Related Links Fuel Line Hose | Engine Hose | Fluid Power | Gates CorporationLine Hose, Guards & Covers Related Videos Braided Hose Assembly with AN - [Line Traps](https://electricalschool.org/linetraps/) - Line Traps Definition: High voltage lines can be used to transmit R. F. carrier signals for the purposes of voice communication, remote signaling and control. The frequency range from 30 to 500 kHz has proven to be advantageous for high frequency carrier transmission. Line trap Related Links High frequency line trap - WikipediaPLC Line Traps; - [LLF (Lighting)](https://electricalschool.org/llflighting/) - LLF (Lighting) Definition: Light Loss Factor Related Links Light Guide: Light Loss FactorsImpossible d'afficher la ressource[TITLE]406 - Client browser does not accept the MIME type of the requested page.Light Loss Factor Explained - LED SourceLight Loss Factor (LLF). How it Works | Cover Club Media - Lighting Layout Servicelight loss factor (LLF) | IESEffect of - [Load](https://electricalschool.org/load/) - Load Definition: 1) The amount of electrical power required by connected electrical equipment. 2) The total impedance of all the items in the output circuit. Related Links Electrical load - WikipediaWhat is the exact meaning of Load? - Electrical Engineering Stack ExchangeWhat is an electric load? - QuoraHow to Calculate Electrical Circuit Load CapacityBenefits of - [Load break](https://electricalschool.org/loadbreak/) - Load break Definition: Refers to a group of rubber insulating products used to electrically connect apparatus with which load can be separated manually. Loadbreak products are manufactured by T&B Elastimold. Related Links What Is a Load Break Switch?[TITLE]switches - Difference between disconnector, circuit breaker and load break switch? - Electrical Engineering Stack Exchange Related Videos - [Local Control Mode](https://electricalschool.org/localcontrolmode/) - Local Control Mode Definition: When set for a given control point it means that the commands can be issued from this point. Related Videos Returning ATV312 to Remote Mode from Local with fw 5.1 IE56 or Higher | Schneider Electric Support View More Controlling and Programming ATV312 in Local and Remote Modes | Schneider Electric - [Local Roadway (Lighting)](https://electricalschool.org/localroadwaylighting/) - Local Roadway (Lighting) Definition: Roadways used primarily for direct access to residential, commercial, industrial or other abutting properties. They do not include roadways carrying through traffic. Long local roadways will generally be divided into short sections by collector roadway Related Links 406 - Client browser does not accept the MIME type of the requested page.[TITLE]FHWA - [Long Distribution (Lighting)](https://electricalschool.org/longdistributionlighting/) - Long Distribution (Lighting) Definition: A luminary is classified as having a long light distribution when its max candlepower point falls between 3.75MH 6.0MH TRL. The maximum luminaire spacing-to-mounting height ratio is generally 12.0 or less. Related Links LED Distribution Types – EYE LightingWhat are Light Distribution Types? - AtlantaLightBulbs.com[TITLE]Exploring the Light Distribution Types of Area - [Long-Term Stability](https://electricalschool.org/long-termstability/) - Long-Term Stability Definition: The stability over a period of one year. Related Links Long-term stability - Wikipedia[TITLE]Long-term stability of organic–inorganic hybrid perovskite solar cells with high efficiency under high humidity conditions - Journal of Materials Chemistry A (RSC Publishing)Long term stability of Li-S batteries using high concentration lithium nitrate electrolytes - ScienceDirect[1609.05172] Long term stability - [LPW](https://electricalschool.org/lpw/) - LPW Definition: Lumens Per Watt Related Links Here are some lumen per watt (LPW) targets for common LEDsLuminous efficacy - WikipediaPhilips Lighting - EcoVantagePhilips' 200 lumens-per-watt prototype LED lamp is the world's most efficient - ExtremeTech Related Videos 175 lumens per watt Cree XH-G LEDs View More Lumens per Watt & LED Efficacy - Aurora - [Lead Acid Battery](https://electricalschool.org/leadacidbattery-2/) - Lead Acid Battery Definition: The assembly of one or more cells with an electrolyte based on dilute sulfuric acid and water, a positive electrode of lead dioxide and negative electrodes of lead. Lead Acid batteries all use the same basic chemistry. The positive plate is comprised of Related Links Lead–acid battery - WikipediaLead-based Batteries Information - [Lead Dioxide (Battery)](https://electricalschool.org/leaddioxidebattery/) - Lead Dioxide (Battery) Definition: The higher oxide of lead present in charged positive plates. It is frequently referred to as lead peroxide. Related Links Lead–acid battery - WikipediaService UnavailableBattery Basics - Progressive DynamicsLead-based Batteries Information – Battery UniversityLead-Acid Batteries Related Videos Lead (IV) Oxide Electrode Preparation/Lead Battery Use View More Lead/ Lead Oxide Battery Preparation/ - [Lead Sulfate](https://electricalschool.org/leadsulfate/) - Lead Sulfate Definition: A lead salt formed by the action of sulfuric acid on lead oxide during paste mixing and formation. It is also formed electromechanically when a battery is discharged. Related Links Lead(II) sulfate - WikipediaLead sulfate | PbSO4 - PubChem[TITLE] Related Videos Batteries - How to Remove Lead Sulfate Buildup from the Plates - [Light Loss Factor (LLF)](https://electricalschool.org/lightlossfactorllf/) - Light Loss Factor (LLF) Definition: A factor used in calculating luminance after a given period of time and under given conditions. It takes into account temperature and voltage variations, dirt accumulation on luminaire and lit surfaces, lamp depreciation, maintenance procedures and atmos Related Links Light Guide: Light Loss Factorslight loss factor (LLF) | IES[TITLE]Impossible d'afficher - [Lighting Arrester](https://electricalschool.org/lightingarrester/) - Lighting Arrester Definition: A device that protects power lines and equipment against high voltage lighting surges and switching surges. Connected from line to ground potential, the device has a very high resistance to current flow at normal voltages. Related Links Lightning arrester - WikipediaElectric Power eTool: Substation Equipment - Lightning ArrestersComplete overview of lightning arresters - [Lighting Maintenance Factor (MF)](https://electricalschool.org/lightingmaintenancefactormf/) - Lighting Maintenance Factor (MF) Definition: The result of time-dependent depreciation effects must be considered in the initial design. Regular maintenance is particularly important with regard to energy conservation and these plans, once incorporated into the design, should be carried out or the Related Links Lighting Maintenance Factor: Explained and DemonstratedWhat is a Lighting Maintenance Factor?10 - [Lightning & Switching Impulses](https://electricalschool.org/lightningswitchingimpulses/) - Lightning & Switching Impulses Definition: A distinction is made between Lightning and Switching impulses on the basis of duration of the wave front. Impulses with wave-front durations of up to a few tens of microseconds are in general considered to be lightning impulses. Those having durations Related Links Lightining Impulse vs Switching Impulse | Insulator - [Limited Approach Boundary](https://electricalschool.org/limitedapproachboundary/) - Limited Approach Boundary Definition: An approach limit at a distance from an exposed live part within which a shock hazard exists. Related Links [TITLE]Electrical Safety | Environmental, Health and Safety Services | Virginia TechLimited Approach Boundary - Electrical Safety BulletinProtection Boundaries406 - Client browser does not accept the MIME type of the requested page.Vista College: - [Lateral Circuit](https://electricalschool.org/lateralcircuit/) - Lateral Circuit Definition: A tap-off line to take primary distribution from the main power line to a nearby load center. Related Links Error Minimization in Lateral Inhibition Circuits | Science SignalingA compact DC - 20 GHz SPDT switch circuit using lateral RF MEMS switches - IEEE Conference PublicationOSA | Silicon photonics packaging with lateral fiber - [Lateral Light Distribution](https://electricalschool.org/laterallightdistribution/) - Lateral Light Distribution Definition: Lateral light distributions are classified by IES distribution Types I, II, III, IV and V. In general, the larger the number, the more is projected across the roadway. This allows the lighting designer to select the appropriate distribution pattern for Related Links Parameterization of Cherenkov Light Lateral Distribution Function as a - [Lay Direction](https://electricalschool.org/laydirection/) - Lay Direction Definition: 1) The direction in which the wires of a conductor are twisted. 2) The twist of conductors in a cable. Related Links Surface finish - Wikipedia::. TESAC .::: : PYTHON - Technical Information : :Rope Lay Direction Versus Drum Grooving - Unirope Ltd.FAQ: What is cable lay | Eland CablesLay direction :: - [Lay Length](https://electricalschool.org/laylength/) - Lay Length Definition: The distance required to complete one revolution of helically laid strands of wires. Related Links FAQ: What is cable lay | Eland CablesCable lay lengthLay Length of Wire RopeLay length dictionary definition | lay length defined[TITLE]Calculating Lay Lengths - Forums[TITLE] Related Videos Beta LaserMike LayScan system provides accurate, repeatable lay length measurements - [LCD](https://electricalschool.org/lcd/) - LCD Definition: Liquid Crystal Display Related Links Liquid-crystal display - WikipediaLCD (Liquid Crystal Display) DefinitionCreating an LCD | HowStuffWorksLCD - What is LCD: Construction and Working Principles of LCD DisplayWhat Is Liquid Crystal Display (LCD)?What is LCD (liquid crystal display)? - Definition from WhatIs.comLiquid-crystal displays Related Videos LCD Technology: How it Works View More Building - [LDC](https://electricalschool.org/ldc/) - LDC Definition: A Line Drop Compensator is utilized to provide constant voltage at the load. Related Links AVR Guide: Mechanical Voltage Regulator Characteristics – Power Quality vs Line Drop - USTECNG 3013 DPage Cannot Be Found | Beckwith Electric Co., Inc.Method for instantly determining line drop compensator parameters of low-voltage regulator using multiple classifiers - - [Lead](https://electricalschool.org/lead/) - Lead Definition: The condition where the current precedes in time with respect to the voltage in an ac circuit (for example, a capacitive load). Related Links Leading and lagging current - Wikipedia[TITLE]AC Circuits | Boundless PhysicsAC Inductor Circuits | Reactance and Impedance -- Inductive | Electronics TextbookAC Inductance and Inductive Reactance in an AC CircuitPhase - [Lead Acid (Battery)](https://electricalschool.org/leadacidbattery/) - Lead Acid (Battery) Definition: Term used in conjunction with a cell or battery that utilizes lead and lead peroxide as the active plate materials in a diluted electrolyte solution of sulfuric acid and water. The nominal cell voltage is 2.1 volts. Related Links Lead–acid battery - WikipediaLead-based Batteries Information – Battery UniversityBattery Basics - Progressive - [kcmil](https://electricalschool.org/kcmil/) - kcmil Definition: One thousand circular-mils Related Links Circular mil - WikipediaGlossary Definition for kcmil Related Videos MCM vs KCMIL View More Pulling 3 500 kcmil View More 750 kcmil wire-pull View More Cable Jointing Video - Lead Wiping PILC Cable 500 KCMIL View More Circular mil, mil, mil-foot View More Pulling 600 KcMil feeders with - [Kilowatt Hour](https://electricalschool.org/kilowatthour/) - Kilowatt Hour Definition: The use of one thousand watts for one hour. Related Links Kilowatt hour - WikipediakW and kWh Explained - Understand & Convert Between Power and EnergyWhat is a Kilowatt-Hour? kWh and kW Explained | EnergySageWhat is kilowatt-hour (kWh)? - Definition from WhatIs.comKilowatt-hour (kWh): definition, example and conversion calculatorKnow your kilowatt-hour, and what - [Knee-Point e.m.f.](https://electricalschool.org/knee-pointemf/) - Knee-Point e.m.f. Definition: Result of when a sinusoidal e.m.f. is applied to the secondary terminals of a current transformer is increased by 10% causes the exciting current to increase by 50%. Related Links Knee Point Voltage of Current Transformer PS ClassWhat is meant by knee point voltage?... - Manis Power Tecknologiies | FacebookCurrent and Voltage - [kVA](https://electricalschool.org/kva/) - kVA Definition: 1) Apparent Power expressed in Thousand Volt-Amps. 2) Kilovolt Ampere rating designates the output which a transformer can deliver at rated voltage and frequency without exceeding a specified temperature rise. Related Links CoreSite Blog | Watts and Volt Amps – What’s a Kva and How is it Calculated? | CoreSiteWhat is kVA unitKVA - [KVAR](https://electricalschool.org/kvar/) - KVAR Definition: KVAR is the measure of additional reactive current flow which occurs when the voltage and current flow are not perfectly in phase. Related Links What is KVAR? Best Definition & How to Calculation Here!KVAR, kVAr or kvar?What is Kvar in electrical? - QuoraKVAR PFC Unit - Scam Review | Open4EnergyKVAR, kVAr, … or - [L](https://electricalschool.org/l/) - L Definition: A symbol used to express inductance. The unit of measure is a "Henry". Related Links Inductance - Wikipediainductance - WiktionaryInductance | Definition of Inductance by Merriam-WebsterInductance | electronics | Britannica.comInductanceInductance – The Physics HypertextbookInductance | Define Inductance at Dictionary.comInductance definition and meaning | Collins English Dictionary Related Videos The Basics of Inductance View - [Ladder Diagram (LD)](https://electricalschool.org/ladderdiagramld/) - Ladder Diagram (LD) Definition: One of the IEC 61131-3 programming languages. Related Links Ladder logic - WikipediaLadder Logic Tutorial with Ladder Logic Symbols & Diagrams“Ladder” Diagrams | Ladder Logic | Electronics TextbookLadder Logic Tutorial for Beginners - PLC Academy Related Videos Ladder Diagram. Ladder Diagram Basics. What is a ladder diagram. View More Example of - [Lag](https://electricalschool.org/lag/) - Lag Definition: The condition where the current is delayed in time with respect to the voltage in an ac circuit (for example, an inductive load). Related Links Phase Relationships in AC CircuitsLeading and lagging current - WikipediaPhase Difference and Phase Shift in an AC Circuit[TITLE]Lead Lag (video) | AC circuit analysis | Khan Academy[TITLE] Related - [Lamp Lumen Depreciation, LLD (Lighting)](https://electricalschool.org/lamplumendepreciationlldlighting/) - Lamp Lumen Depreciation, LLD (Lighting) Definition: Information about the chosen lamp and its lumen depreciation and mortality are available from lamp manufacturers' literature. Rated average life should be determined for the specific hours per start; it should be known when burnouts occur in the lamp lif Related Links ALI: Lamp Lumen DepreciationLed Lighting topic-Lumens depreciation - [Interrupting Medium](https://electricalschool.org/interruptingmedium/) - Interrupting Medium Definition: The "fluid" used to interrupt the flow of electric current in a switch or circuit breaker. In high power equipment, this may be oil, insulating gas or even no material, as is the case of vacuum interruption which works because in a vacuum there is no mate Related Links Circuit breakers classified - [Interrupting Rating](https://electricalschool.org/interruptingrating/) - Interrupting Rating Definition: The rating of a device to interrupt the flow of power or current, generally applied to a circuit breaker or a switch. Related Links Your access to this site has been limitedBreaking capacity - Wikipedia[TITLE]Understanding Circuit Breaker Markings | Electrical Construction & Maintenance (EC&M) Magazine[TITLE][TITLE] Related Videos Interrupt Rating: Safely Interrupting Electrical - [Interruption](https://electricalschool.org/interruption/) - Interruption Definition: The loss of electric service to one or more customers or other facilities. It is the result of one or more component outages. Related Links Power outage - WikipediaWhat is a planned power interruption? | Horizon PowerInterruption costs of service sector electricity customers, a hybrid approach - ScienceDirect406 - Client browser does not - [Intrinsic Error](https://electricalschool.org/intrinsicerror/) - Intrinsic Error Definition: An error determined when the transducer is under reference conditions. Related Links Random vs. Systematic Error[TITLE][TITLE]406 - Client browser does not accept the MIME type of the requested page.[TITLE]IEC 60050 - International Electrotechnical Vocabulary - Details for IEV number 311-03-08: "intrinsic error" - [Inverse Time Delay Relay](https://electricalschool.org/inversetimedelayrelay/) - Inverse Time Delay Relay Definition: A dependent time delay relay having an operating time which is an inverse function of the electrical characteristic quantity. Related Links Difference between instantaneous, definite time and inverse time over current protection relays - Electrical Engineering Stack ExchangeInverse Time Relay | Definite Time Lag RelayWhat is inverse time relay? - - [Inverter](https://electricalschool.org/inverter/) - Inverter Definition: A device that converts DC electricity into single or multiphase AC electricity. Related Links Power inverter - WikipediaHow do inverters convert DC electricity to AC?How DC/AC Power Inverters Work | HowStuffWorksQuality AC voltage for all electrical appliances with an inverter - Studer Innotec Related Videos Inverters, How do they work ? View More - [ISM Band](https://electricalschool.org/ismband/) - ISM Band Definition: The 2.4GHz frequency spectrum. ISM is actually synonymous with 2.4GHz, however it stands for Industrial, Scientific and Medical. Related Links ISM band - WikipediaISM band Definition from PC Magazine EncyclopediaWhat is the Industrial, Scientific and Medical Radio Band (ISM Band)? - Definition from TechopediaAdvantages and Disadvantages of ISM Band FrequenciesAFAR Communications Inc. - [Isolation Link](https://electricalschool.org/isolationlink/) - Isolation Link Definition: A metal link used in series with a fusing device that melts and prevents refusing/re-enerization of a transformer. - [Isotropic Antenna](https://electricalschool.org/isotropicantenna/) - Isotropic Antenna Definition: A theoretical, ideal antenna having a signal range of 360 degrees. It is used as a baseline for measuring a real antenna's strength signal, in dBi, where i represents Isotropic Antenna. Related Links What is an Isotropic Antenna? - everything RFIsotropic antenna - Telecom ABCIsotropic radiator - WikipediaAntenna Theory Isotropic RadiationdBi - - [Joule](https://electricalschool.org/joule/) - Joule Definition: 1) Work done by the force of one neutron when its point of application moves through the distance of one meter in the direction of the force. 2) One watt-second. Related Links Getting to know the Joule (J), SI's energy unitJoule (unit J) - Energy Unit - Nuclear PowerJoule - WikipediaWhat is the - [Instantaneous Relay](https://electricalschool.org/instantaneousrelay/) - Instantaneous Relay Definition: A relay that operates and resets with no intentional time delay. Related Links Instantaneous Relay[TITLE]Instantaneous, Definite Time, Inverse-Time OverCurrent Relays - My Tech InfoInstantaneous relays by Mors Smitt industrial technologyDifference between instantaneous, definite time and inverse time over current protection relays - Electrical Engineering Stack ExchangeRelay Timing Characteristics | Instantaneous, Inverse Time - [Instrument Transformer](https://electricalschool.org/instrumenttransformer/) - Instrument Transformer Definition: A transformer that is only designed to reduce current or voltage from a primary value to a lower value secondary that can be applied to a meter or instrument, at a proportional safer level. Related Links Instrument transformer - WikipediaInstrument transformers | ABB[TITLE]Instrument Transformers – Application GuideInstrument Transformers: GE Grid Solutions Related - [Insulated Gate Bipolar Transistor](https://electricalschool.org/insulatedgatebipolartransistor/) - Insulated Gate Bipolar Transistor Definition: A special design of transistor that is suitable for handling high voltages and currents. Often used in static power control equipment such as inverters, or controlled rectifiers, due to the flexibility of control of the output. Related Links Insulated Gate Bipolar Transistor or IGBT TransistorInsulated-gate bipolar transistor - WikipediaIIS 8.5 - [Insolation](https://electricalschool.org/insolation/) - Insolation Definition: Sunlight, direct of diffuse, from incident solar radiation. It is equal to approximately 1000 watts per square meter at high noon. Not to be confused with insulation. Related Links InsolationInsolation - Simple English Wikipedia, the free encyclopediaInsolation | EARTH 103: Earth in the FutureSolar Insolation Levels - Apricus Solar Water Heaterinsolation - WiktionaryInsolation - [Insulation](https://electricalschool.org/insulation/) - Insulation Definition: 1) A non-conductive material used on a conductor to separate conducting materials in a circuit. 2) The non-conductive material used in the manufacture of insulated cables. Related Links Insulator (electricity) - WikipediaElectrical Insulation Related Videos Electrical Insulation: Low-Voltage Insulating Materials : Electrical Installations & Repairs View More Wall Insulation - How to Insulate - [Internal Impedance (Battery)](https://electricalschool.org/internalimpedancebattery/) - Internal Impedance (Battery) Definition: The opposition to the flow of alternating current at a particular frequency in a cell or battery at a specific state-of-charge and temperature. Related Links What is battery impedance?Internal resistance - WikipediaDoes Internal Resistance Affect Performance? - Battery UniversityEmf and Internal ResistanceBattery Internal ResistanceHow to Measure the Internal Resistance of a - [Internal Resistance (Battery)](https://electricalschool.org/internalresistancebattery/) - Internal Resistance (Battery) Definition: The opposition or resistance to the flow of Direct Electric Current within a cell or battery; The sum of the ionic and electronic resistance of the cell components. Its value may vary with the current, state-of-charge, temperature, and age. With an extrem Related Links Internal resistance - WikipediaBattery Internal ResistanceEmf and - [International System of Units (SI)](https://electricalschool.org/internationalsystemofunitssi/) - International System of Units (SI) Definition: A universal system of units in which the following six units of measure are considered basic: meter, kilogram, second, ampere, Kelvin degree and candela. Related Links International System of Units explained simply.International System of Units | measurement | Britannica.comInternational System of Units - WikipediaEssentials of the SI: Base & - [Interrupter Switch](https://electricalschool.org/interrupterswitch/) - Interrupter Switch Definition: A switch equipped with an interrupter for making or breaking connections under load Related Links Interrupter - WikipediaElectrical Switch Definitions -- Morpac Switch DivisionExperience Operating Flexibility and Efficiency - Southern States, LLCShift interrupter switch...where is it? Page: 1 - iboats Boating Forums | 417959 Related Videos Photo Interrupter Switch HY870P setup View - [Incandescent Lamp](https://electricalschool.org/incandescentlamp/) - Incandescent Lamp Definition: A lamp in which light is produced by a filament heated to incandescence by an electric current. Related Links Incandescent light bulb - WikipediaIncandescent lamp | lighting | Britannica.comIncandescent Lighting | Department of EnergyIncandescent | Light Bulb Types | Bulbs.comIncandescent lamp | Define Incandescent lamp at Dictionary.com Related Videos The Incandescent Lamp - [Incident Energy](https://electricalschool.org/incidentenergy/) - Incident Energy Definition: The amount of energy impressed on a surface, a certain distance from the source, generated during an electrical arc event. Often measured in calories per centimeter squared. (cal/cm²) Related Links [TITLE][TITLE]Group – Internal Gains (People, Lights, Other internal zone equipment): Input Output Reference — EnergyPlus 8.0406 - Client browser does not accept - [Independent Time Measuring Relay](https://electricalschool.org/independenttimemeasuringrelay/) - Independent Time Measuring Relay Definition: A measuring relay, the specified time for which can be considered as being independent, within specific limits, of the value of the characteristic quantity. Related Links [TITLE]dict.cc dictionary :: independent time measuring relay :: German-English translationIEC 60050 - International Electrotechnical Vocabulary - Search results (by Area); IEC International Electrotechnical Vocabulary - [Induced Current](https://electricalschool.org/inducedcurrent/) - Induced Current Definition: Current in a conductor resulting from a nearby electromagnetic field. Related Links Induced current in a wire (video) | Khan AcademyInduced Current - MagLabIntroduction to Magnetism and Induced Currents Related Videos Induced current in a wire | Physics | Khan Academy View More Physics - Understanding Electromagnetic induction (EMI) and electromagnetic force - [Induced Voltage](https://electricalschool.org/inducedvoltage/) - Induced Voltage Definition: A voltage produced in a circuit from a nearby electric field. Related Links What is induced voltage? - QuoraStray and Induced Voltage : Electrical OnlineElectromagnetic Induction | Magnetism and Electromagnetism | Electronics TextbookElectromagnetic Induction and Faradays LawElectromagnetic induction - Wikipedia Related Videos 14 Induced Voltage by Delmar View More Electromagnetic Induction: Induced - [Inductance](https://electricalschool.org/inductance/) - Inductance Definition: 1) The property of a circuit in which a change in current induces an electro motive force. 2) Magnetic component of impedance. Related Links Inductance - Wikipediainductance - WiktionaryInductance | Definition of Inductance by Merriam-WebsterInductance | electronics | Britannica.comInductanceInductance – The Physics HypertextbookInductance | Define Inductance at Dictionary.comInductance definition and meaning | Collins - [Influence Quantity](https://electricalschool.org/influencequantity/) - Influence Quantity Definition: A quantity which is not the subject of the measurement but which influences the value of the output signal for a constant value of the measurand. Related Links The influence of quantity of information and goal framing on decision - ScienceDirectInfluence of the quantity and quality of light on photosynthetic periodicity in - [Initial Lamp Lumens (Lighting)](https://electricalschool.org/initiallamplumenslighting/) - Initial Lamp Lumens (Lighting) Definition: (AMF x PS x RW)/(CU x LLF) Related Links Initial vs. Mean Lumens404 Not FoundWhat is the light output of T8 fluorescent lamps? | T8 Fluorescent Lamps | Lighting Answers | NLPIPWhat Are Lumens? Lumens Chart, Definition & Light Bulb Facts at Lumens.comLight Guide: Lighting Metrics: Quantity, Quality, EfficiencyLED lamp - [Inrush Current](https://electricalschool.org/inrushcurrent/) - Inrush Current Definition: The initial surge of current experienced before the load resistance of impedance increases to its normal operating value. Related Links Inrush current - WikipediaInrush Current Causes and Cures. Learn about Inrush Current LimitersWhat is the difference between Inrush Current and Peak Current? | Pacific Power SourceHow and why to measure inrush current[TITLE] - [ICT](https://electricalschool.org/ict/) - ICT Definition: Interposing Current Transformer (software implemented). Related Links [PDF] mbch_relay_manual - Free Download PDFSilkaans, Electrical Transformer Manufacturer/Manufacturers Supplier India, Electrical Contractor, Power Transformers, Distribution Transformer Company IndiaCurrent transformers (CTs) in a few words[TITLE]Interposing Current Transformers, Interposing CT Manufacturer, Nashik, IndiaWhat is the function of interposing current transformer? :: Answer this Question - LearnPick: IndiaCR4 - [IEC](https://electricalschool.org/iec/) - IEC Definition: International Electrotechnical Commission. Related Links IEC - About the IECInternational Electrotechnical Commission - Wikipedia - [IED](https://electricalschool.org/ied/) - IED Definition: Intelligent Electronic Device. Equipment containing a microprocessor and software used to implement one or more functions in relation to an item of electrical equipment. IED is a generic term used to describe any microprocessor-based equipment, apart from Related Links Intelligent electronic device - WikipediaIntelligent Electronic Device (IED)What is intelligent electronic device (IED)? - - [IEEE](https://electricalschool.org/ieee/) - IEEE Definition: Institute of Electrical and Electronics Engineers. Pronounced "eye-triple-E", this non-profit U.S. engineering organization develops, promotes, and reviews standards within the electronics, computer and electric power industries. Related Links IEEE - About IEEEInstitute of Electrical and Electronics Engineers - Wikipedia - [IESNA](https://electricalschool.org/iesna/) - IESNA Definition: Illuminating Engineering Society of North America. Founded in 1906, IESNA is the recognized technical authority on illumination. Related Links About Us | IESIlluminating Engineering Society of North America - WikipediaU.S. Department of Energy and Illuminating Engineering Society of North America Partner to Advance Industry Lighting Standards | Department of Energy - [IGBT](https://electricalschool.org/igbt/) - IGBT Definition: Insulated Gate Bipolar Transistor Related Links Insulated Gate Bipolar Transistor or IGBT TransistorInsulated-gate bipolar transistor - WikipediaIIS 8.5 Detailed Error - 406.0 - Not AcceptableInsulated Gate Bipolar Transistor CharacteristicsWhat is an IGBT circuit, IGBT inverter transistors, transistor circuits - Future Electronics Related Videos Electronic Basics #28: IGBT and when to use them View - [ILL (Lighting)](https://electricalschool.org/illlighting/) - ILL (Lighting) Definition: Initial Lamp Lumens Related Links Initial vs. Mean Lumens404 Not FoundWhat is the light output of T8 fluorescent lamps? | T8 Fluorescent Lamps | Lighting Answers | NLPIPLight Guide: Lighting Metrics: Quantity, Quality, EfficiencyWhat Are Lumens? Lumens Chart, Definition & Light Bulb Facts at Lumens.comT8 Lighting:What Is The Actual Lumen Output For - [Impedance](https://electricalschool.org/impedance/) - Impedance Definition: 1) The total opposing force to the flow of current in an ac circuit. 2) The combination of resistance and reactance affecting the flow of an alternating current generally expressed in ohms. Related Links Electrical impedance - WikipediaWhat is impedance? - Definition from WhatIs.comImpedance | Define Impedance at Dictionary.comImpedance (video) | AC circuit - [Impulse Test](https://electricalschool.org/impulsetest/) - Impulse Test Definition: Tests to confirm that the insulation level is sufficient to withstand overvoltages, such as those caused by lightning strikes and switching. Related Links Impulse Test of TransformerImpulse Testing | HV TECHNOLOGIES, Inc.[TITLE]406 - Client browser does not accept the MIME type of the requested page.IIS 7.5 Detailed Error - 406.0 - Not - [HSR](https://electricalschool.org/hsr/) - HSR Definition: High Speed Re-closing. Related Links 406 - Client browser does not accept the MIME type of the requested page.A study on a high-speed reclosing in power system - IEEE Conference Publication[TITLE][TITLE][TITLE]High speed circuit breaker reclosing mechanism - GEN ELECTRICA High-speed Reclosing Method to Improve for the Stability in Power System[TITLE]Effect of high speed - [HV](https://electricalschool.org/hv/) - HV Definition: High Voltage. Related Links High voltage - Wikipedia Related Videos High Voltage With High Current View More Installing Spacer Ball Marker In High Voltage Power Line View More 6 Amazing EXPERIMENTS with High voltage and other View More High Voltage With High Current View More Installing Spacer Ball Marker In High Voltage Power - [Hybrid Photovoltaic System](https://electricalschool.org/hybridphotovoltaicsystem/) - Hybrid Photovoltaic System Definition: A photovoltaic system that includes other sources of electric generation such as wind or fossil fuel. Related Links Photovoltaic Hybrid SystemsHybrid PV system - Hermes Solar LTDTypes of PV SystemsHybrid photovoltaic system control for enhancing sustainable energy - IEEE Conference PublicationHybrid Photovoltaic Systems - Desigenia[TITLE]Solar hybrid power systems - WikipediaAdvancements in - [Hydrometer](https://electricalschool.org/hydrometer/) - Hydrometer Definition: A float type instrument used to determine the state-of-charge of a battery by measuring the specific gravity of the battery electrolyte (i.e., the amount of sulfuric acid in the electrolyte). Related Links How to Build a Hydrometer: 8 Steps (with Pictures) - wikiHow Related Videos HOW TO USE A HYDROMETER View More How - [I](https://electricalschool.org/i/) - I Definition: Current Related Links Electric current - WikipediaElectric currentElectric CurrentWhat Is Electric Current? Related Videos Electric Current: Crash Course Physics #28 View More What is Electric Current? View More Electric Current & Circuits Explained, Ohm's Law, Charge, Power, Physics Problems, Basic Electricity View More Current | Introduction to electrical engineering | Electrical engineering | - [I.D.M.T.](https://electricalschool.org/idmt/) - I.D.M.T. Definition: Inverse Definite Minimum Time. Related Links IDMT (Inverse Definite Minimum Time) Relay Calculation[TITLE]What is IDMT Relays? - QuoraInverse definite minimum time overcurrent relay coordination using Computer Aided Protection Engineering - IEEE Conference Publication Related Videos IDMT Relay (Inverse Definite Minimum Time Relay): Protection of Transmission lines View More IDMT relays View More UR-127 - [I2t](https://electricalschool.org/i2t/) - I2t Definition: Current Squared times time. This is an electrical quantity that is used to determine energy to a protective device, such as a circuit breaker or fuse. Related Videos Fuse Ratings: What is the "Melting Integral" or "I-Squared-T Value" good for? View More Surge Current I^2t, I squared t Measurement Overview View More Fuse - [ICEA](https://electricalschool.org/icea/) - ICEA Definition: Insulated Cable Engineers Association. ICEA is located at P.O. Box P, Southe Yarmouth, MA 02664. Related Links indexInsulated Cable Engineers Association - Wikipedia[TITLE]ICEA-Insulated Cable Engineers Association[TITLE]SAI Global Store - Industry StandardsICEA - Insulated Cable Engineers AssociationOverview of new ICEA medium voltage power cable specifications - IEEE Conference Publication Related Videos General Cable W2131246 - [High Intensity Discharge (HID) Lamp](https://electricalschool.org/highintensitydischargehidlamp/) - High Intensity Discharge (HID) Lamp Definition: An electric discharge lamp in which the light producing arc is stabilized. Examples of HID lamps include High Pressure Sodium, Metal Halide and Mercury Vapor. Related Links High-intensity discharge lamp - WikipediaHID (High Intensity Discharge) | Light Bulb Types | Bulbs.comTypes of Lighting: High-intensity Discharge | EGEE 102: Energy - [High Pressure Sodium (HPS) Lamp](https://electricalschool.org/highpressuresodiumhpslamp/) - High Pressure Sodium (HPS) Lamp Definition: A High Intensity Discharge light source in which the arc tube's primary internal element is Sodium Vapor. Related Links [TITLE]What is a High Pressure Sodium (HPS)? - Definition from MaximumYieldHPS Grow LightsLED Versus High Pressure Sodium (HPS) and Low Pressure Sodium (LPS)Sodium-vapor lamp - Wikipedia Related Videos Grow Lights - [High Voltage](https://electricalschool.org/highvoltage/) - High Voltage Definition: An electrical system or cable designed to operate between 46kv and 230kv. Related Links High voltage - Wikipedia Related Videos High Voltage With High Current View More Installing Spacer Ball Marker In High Voltage Power Line View More 6 Amazing EXPERIMENTS with High voltage and other View More High Voltage With High - [High Voltage System](https://electricalschool.org/highvoltagesystem/) - High Voltage System Definition: An electric power system having a maximum roo-mean-square ac voltage above 72.5 kilovolts (kv). Related Links Reasons for Using High Voltage Systems On board ShipsHigh voltage - Wikipedia“High Voltage” Systems and Safety | IAEI Magazine[TITLE]HIGH VOLTAGE SYSTEMS ON SHIPS - DieselShip Related Videos Why High Voltage is Used on board Ships? - [High-speed reclosing](https://electricalschool.org/high-speedreclosing/) - High-speed reclosing Definition: A re-closing scheme where re-closure is carried out without any time delay other than required for deionization. Related Links 406 - Client browser does not accept the MIME type of the requested page.[TITLE]A study on a high-speed reclosing in power system - IEEE Conference Publication[TITLE][TITLE][TITLE]Recloser - Wikipedia[TITLE]A High-speed Reclosing Method to Improve - [Hookstick](https://electricalschool.org/hookstick/) - Hookstick Definition: An insulated stick, usually made of fiberglass, that is used to work energized overhead conductors and operate electrical equipment. Related Links [TITLE]Hookstick Operated Switches – Cleaveland/Price Inc.[TITLE][TITLE] Related Videos Longstick and a bad cutout View More Hookstick Operation of Trident with SafeVu Switchgear View More 500 kV Motor Operated Disconnect Switch (MOD).mp4 View - [Horsepower](https://electricalschool.org/horsepower/) - Horsepower Definition: A unit of work. When used to show power usage, one horsepower is equivalent to 746 watts. Related Links Horsepower | unit of measurement | Britannica.comWhat is a power unit "horsepower" (HP)What is horsepower (hp)? - Definition from WhatIs.comHorsepower - WikipediaWhat is horsepower (hp)? How to Calculate Horsepower | GroschoppCutting Technology Related Videos - [HPS](https://electricalschool.org/hps/) - HPS Definition: High Pressure Sodium Related Links LED Versus High Pressure Sodium (HPS) and Low Pressure Sodium (LPS)The Sodium Lamp - How it works and historySodium-vapor lamp - Wikipedia Related Videos Difference between High Pressure Sodium and LED street lights View More High Pressure Sodium, Metal Halide and Mercury Vapor. View More Low Pressure Sodium - [HRC](https://electricalschool.org/hrc/) - HRC Definition: High Rupturing Capacity (applicable to fuses). Related Links High Rupturing Capacity (HRC) Fuses | OwlcationHRC Fuse (High Rupturing Capacity Fuse) and its TypesDiscussion on :The high-rupturing-capacity cartridge fuse, with special reference to short-circuit performance" - IET Journals & MagazineThe high-rupturing-capacity cartridge fuse, with special reference to short-circuit performanceRecycling potential for low voltage and - [Hard Drawn](https://electricalschool.org/harddrawn/) - Hard Drawn Definition: Wire that has been drawn to its specific size and not annealed. Related Links [TITLE]| Hard Drawn WireMadison SteelWhat is the difference between Hard drawn and Soft drawn copper, specially in terms of their tensile strength? - QuoraHard-drawn | Definition of Hard-drawn by Merriam-WebsterHard Drawn Carbon Steel Spring Material | Spring Engineers - [Hazard Risk Category](https://electricalschool.org/hazardriskcategory/) - Hazard Risk Category Definition: Categories defined by NFPA 70E-2004 to explain protection levels needed when performing tasks. The values range from 1 to 4. ATPV rated PPE is required for categories 1 through 4 as follows: 1- 4 cal/cm²; 2- 8 cal/cm²; 3- 25 cal/cm²; 4- 40 cal/cm². Related Links HAZARD RISK CATEGORY PER NFPA - [Heat Run Test](https://electricalschool.org/heatruntest/) - Heat Run Test Definition: A test that is used to determine the increase in operating temperature at a given load. Related Links 406 - Client browser does not accept the MIME type of the requested page.Heat Run TestHeat Run Test on Three Phase Transformers ~ Electrical EyeHeat Run Test LaboratoryHow are losses under a full - [Helical](https://electricalschool.org/helical/) - Helical Definition: Wrapped in a spiral fashion. Refers to the way the strands of a conductor are laid. Related Links Helical - WikipediaHelical | Definition of Helical by Merriam-WebsterHelical | Define Helical at Dictionary.comhelical | Definition of helical in English by Oxford Dictionaries - [Henry](https://electricalschool.org/henry/) - Henry Definition: The meter-kilogram-second unit of inductance, equal to the inductance of a circuit in which an electromotive force of one volt is produced by a current in the circuit which varies at the rate of one ampere per second. Related Links Henry (unit) - Wikipediahenry (unit) - Simple English Wikipedia, the free encyclopediaWhat is - [Hertz](https://electricalschool.org/hertz/) - Hertz Definition: 1) A unit of frequency equal to one cycle per second. 2) In alternating current, the changing of the negative and positive poles. Related Links Hertz - WikipediaHertz - Simple English Wikipedia, the free encyclopediaHertz | unit of measurement | Britannica.comWhat are the units of hertz? - QuoraWhat is a frequency unit "hertz" - [HID](https://electricalschool.org/hid/) - HID Definition: High Intensity Discharge Related Links HID (High Intensity Discharge) | Light Bulb Types | Bulbs.comTypes of Lighting: High-intensity Discharge | EGEE 102: Energy Conservation and Environmental ProtectionGlobal High Intensity Discharge (HID) Lamps Market 2018 Top Players : GE, Hella, Valeo, Koito, Panasonic, Robertson, Hubbell | NEW CANAANITECT NEWSHigh-intensity discharge lamp - Wikipedia Related - [GMT](https://electricalschool.org/gmt/) - GMT Definition: Greenwich Mean Time Related Links What is GMT ? Facts and history. | Greenwich Mean TimeGreenwich Mean Time - Wikipedia Related Videos What is GMT or Greenwich Mean Time? View More Greenwich Means Time View More Difference Between GMT and UTC View More GREENWICH MEAN TIME View More What is GMT or Greenwich - [Gnd](https://electricalschool.org/gnd/) - Gnd Definition: Ground Related Links What is Ground (GND)? - Definition from TechopediaAn Introduction to Ground: Earth Ground, Common Ground, Analog Ground, and Digital GroundWhat is Ground in Electronic CircuitsGround (electricity) - Wikipediaschematics - Use of ground symbols in circuit diagrams - Electrical Engineering Stack Exchange Related Videos That Ground Symbol (What is Ground?) - - [Ground](https://electricalschool.org/ground/) - Ground Definition: 1. An electrical term meaning to connect to the earth. 2. A conducting connection, whether intentional or accidental by which an electric circuit, or equipment, is connected to the earth or some conducting body that serves in place of the earth. Related Links Ground (electricity) - WikipediaElectrical Grounding Made SimpleElectrical Ground | HowStuffWorksWhat - [GTO](https://electricalschool.org/gto/) - GTO Definition: Gate Turn-off Thyristor Related Links Gate turn-off thyristor - WikipediaGate Turn Off ThyristorGate Turn-Off Thyristor, GTO :: Radio-Electronics.ComGate turn-off thyristors (GTO) | ABB Related Videos GTO thyristor and GTO working - Gate Turn Off Thyristor in Power Electronics by Engineering Funda View More gate turn off thyristor (GTO) (Version 1.0) (electronics2electrical.com) View More - [Guy Strain Insulator](https://electricalschool.org/guystraininsulator/) - Guy Strain Insulator Definition: An insulator, normally porcelain, used to electrically isolate one part of a down guy from another. Guy Strain Insulators are made by Porcelain Products. Related Links Strain insulator - WikipediaFiberglass Guy Strains[TITLE]Guy Strain Insulator Related Videos Guy Strain Insulator modeling in PLS-POLE and TOWER View More Large Guy Strain insulator View - [H](https://electricalschool.org/h/) - H Definition: Henry. Related Links Henry (unit) - Wikipediahenry (unit) - Simple English Wikipedia, the free encyclopediaWhat is henry (H)? - Definition from WhatIs.comHenry | unit of inductance | Britannica.comHenry (unit) Related Videos Henry (unit) View More Physics - E&M: Inductance (2 of 20) Mutual Inductance: Explaining the Units View More Henry (unit) View More - [H2](https://electricalschool.org/h2/) - H2 Definition: Hydrogen. Related Links Hydrogen - WikipediaFacts About HydrogenHydrogenIt's Elemental - The Element HydrogenHydrogen - Element information, properties and uses | Periodic Table Related Videos Hydrogen - the Fuel of the Future View More Hydrogen - Periodic Table of Videos View More Where Does Hydrogen Come From? View More Properties of Hydrogen | Chemistry - [Fuse](https://electricalschool.org/fuse/) - Fuse Definition: A device installed in the conductive path with a predetermined melting point coordinated to load current. Fuses are used to protect equipment from over current conditions and damage. Related Videos What is Electric fuse View More Electrical fuse burning with increasing current View More How to replace fuses and reset breakers View More - [Fuse Arcing Time](https://electricalschool.org/fusearcingtime/) - Fuse Arcing Time Definition: The amount of time required to extinguish the arc and clear the circuit. Related Links IEC 60050 - International Electrotechnical Vocabulary - Details for IEV number 441-18-21: "pre-arcing time"Semiconductor Fuses: Terms and Explanations | PowerGuru - Power Electronics Information PortalElectric fuses operation, a review: 1. Pre-arcing period - IOPscience[TITLE] Related Videos - [Fuse Link](https://electricalschool.org/fuselink/) - Fuse Link Definition: A replaceable fuse element used in a Fused Cutout. Related Videos How to Replace a Fusible Link (Car won't Start) View More Alternator problems. Do a Fusible link test first View More Fusible link installation View More Alternator fuse link repaired my way. View More Replacing Fusible links with fuses 1 gen - [Fuse Melt Time](https://electricalschool.org/fusemelttime/) - Fuse Melt Time Definition: The time needed for a fuse element to melt, thereby initiating operation of the fuse. Also known as Melt Time. Related Links electric circuits - How to calculate melting time of a fuse? - Physics Stack Exchange[TITLE]Modeling of fuses for melting time and fusing current analysis - IEEE Conference PublicationFuse (electrical) - [Fused Cutout](https://electricalschool.org/fusedcutout/) - Fused Cutout Definition: A device, normally installed overhead, that is used to fuse a line or electrical apparatus. Related Links Fuse cutout - WikipediaOutdoor fused cutouts - Fuses and cutouts (Apparatus) | ABB Related Videos Loud explosion blown fuse transformer bank Chamberlain SD View More Jack Jumper? Cutout Bypass Tool & Grab-It? Cutout Fuse Tube - [Gassing (Battery)](https://electricalschool.org/gassingbattery/) - Gassing (Battery) Definition: The evolution of gas from one or more of the electrodes in a cell. Gassing commonly results from local action (self discharge) or from the electrolysis of water in the electrolyte during charging. Related Links GassingBattery Basics - Progressive DynamicsWhat hazardous gases are associated with lead acid battery charging stations? | GfG - [GIS](https://electricalschool.org/gis/) - GIS Definition: Gas Insulated Switchgear (usually SF6). Related Links Gas-insulated switchgear | ABBSwitchgear - Wikipedia Related Videos Gas-insulated switchgear: safe operation View More ABB Gas Insulated Switchgear | 11 Essential Parts of GIS View More Gas Insulated Switchgear Webinar View More ABB?s modular and eco-efficient 145-kilovolt gas-insulated switchgear View More 50 years of ABB innovations - [Float Charge](https://electricalschool.org/floatcharge/) - Float Charge Definition: A method of maintaining a cell or battery in a charged condition by continuous, long-term, constant voltage charging at a level sufficient to balance self-discharge. Related Links Float Charging Fundamentals | All About Lead Acid BatteriesFloat Charging Battery - Engineers EdgeFloat voltage - WikipediaFloat/Maintenance Charging: Is It Really Necessary? | Deltran Battery - [Flooded Cell](https://electricalschool.org/floodedcell/) - Flooded Cell Definition: A cell design that incorporates an excess amount of electrolyte. Related Links Evaluating the state-of-health of flooded and valve-regulated lead/acid batteries. A comparison of conductance testing with traditional methods - ScienceDirectFlooded VS Gel Batteries: What Are The Differences? | Technician.AcademyAn Inside Look: Flooded Cells — Prison LivesFlooded Cells Beneath Dry Cells - - [Fluorescent Lamp](https://electricalschool.org/fluorescentlamp/) - Fluorescent Lamp Definition: A low pressure Mercury, electric discharge lamp in which a fluorescing coating (Phosphor) transforms some of the ultraviolet energy generated by the discharge into light. Related Links Fluorescent lamp - WikipediaFluorescent lamp - New World EncyclopediaFluorescent lamp - Simple English Wikipedia, the free encyclopediaWhat is fluorescent lighting? Pros and cons of linear - [Foot-candle (fc)](https://electricalschool.org/foot-candlefc/) - Foot-candle (fc) Definition: Standard unit of measure for illumination on a surface. The Average foot-candle level on a square surface is equal to the lumens striking the surface, divided by the area of the surface. Related Links Foot-candle - Wikipedia[TITLE]LED Lighting: What is a Foot Candle & How is it Measured?Typical Foot Candle (FC) and - [FPI](https://electricalschool.org/fpi/) - FPI Definition: Fault Passage Indicator Related Links Fault indicator - WikipediaFault Passage Indicator Solutions from Texas Instruments | TI.com Related Videos AmpTrail - Remote Fault Indication with Bi-directional Communication View More FLA3 - Fault Passage Indicators View More Fault Passage Indicator - SCADA Operation [EMT] View More Fault Current Indicators View More Line Fault Indicator - [Frequency](https://electricalschool.org/frequency/) - Frequency Definition: In ac systems, the rate at which the current changes direction, expressed in hertz (cycles per second); A measure of the number of complete cycles of a wave-form per unit of time. Related Links Utility frequency - Wikipedia Related Videos AC Voltage Circuts (Cycles, Periods, & Frequency) View More TIG with TOT: AC - [Frequency Transducer](https://electricalschool.org/frequencytransducer/) - Frequency Transducer Definition: A transducer used for the measurement of the frequency of an A.C. electrical quantity. Related Links [TITLE] Related Videos WAGO 857-500 Jumpflex Frequency Transducer View More Ultrasonic Frequency Demonstration View More Allen Bradley PLC Project with VFD, HMI, and Transducer View More Dr. Kirk SHUNG: High-frequency transducer arrays View More New Product - [Fulgurate](https://electricalschool.org/fulgurate/) - Fulgurate Definition: A glass-like structure that forms around the element of a current limiting fuse when it operates. It is causes when the heat of the arc melts the silica sand surrounding it. Related Links Fulgurate | Define Fulgurate at Dictionary.comfulgurate - WiktionaryFulgurate - definition of fulgurate by The Free DictionaryRadiofrequency ablation - WikipediaFulgurate definition - [Full Scale Output](https://electricalschool.org/fullscaleoutput/) - Full Scale Output Definition: The specified maximum output value for which the stated accuracy condition applies Related Links What is the Effect of Null Offset on Full-Scale Output?Sensor FundamentalsFSO – Full Scale OutputLoad Cells | Force Logic | TerminologyTechnical DefinitionsSENSY: technical terms Related Videos Basic DAC Concepts View More Precision Weigh Scale Reference Circuit View - [Fiducial Value](https://electricalschool.org/fiducialvalue/) - Fiducial Value Definition: A specified value to which reference is made in order to specify the accuracy of the transducer. For transducers the fiducial value is the span. For transducers having reversible or symmetrical outputs the fiducial value can be either the span or half the Related Links [TITLE] Related Videos CSSE3010: Real-time fiducial marker - [Field Current](https://electricalschool.org/fieldcurrent/) - Field Current Definition: The magnetizing current of a device such as a transformer. Also known as exciting current. Related Links Magnetic fields of currentsWhat is field current and armature current? - QuoraExcitation (magnetic) - Wikipedia Related Videos Magnetic field created by a current carrying wire | Physics | Khan Academy View More Magnetic Field of - [Flame Resistance](https://electricalschool.org/flameresistance/) - Flame Resistance Definition: The ability of insulation or jacketing material to resist the support and conveyance of fire. Related Links Flame Resistant Fibers and Fabrics: Setting the Record StraightFlame Resistance | International Wool Textile OrganisationFlame retardant - WikipediaThe Difference Between Arc Rated (AR) and Flame Resistant (FR) - Westex by Milliken Related Videos Commercial Products - [Flash Hazard Analysis](https://electricalschool.org/flashhazardanalysis/) - Flash Hazard Analysis Definition: A study investigating a worker's potential exposure to arc-flash energy, conducted for the purpose of injury prevention, the determination of safe work practices, and the appropriate levels of PPE. Related Links Arc Flash Hazard Analysis Coordination Studies Short Circuit Analysis Voltage Drop Calculations - Basis Consulting EngineersThe Arc Flash Hazard Analysis - [Flash Protection Boundary](https://electricalschool.org/flashprotectionboundary/) - Flash Protection Boundary Definition: An approach limit at a distance from exposed live parts within which a person could receive a second degree burn if an electrical arc flash were to occur. Related Links [TITLE][TITLE]Understanding the Arc Flash Boundary | Fluke406 - Client browser does not accept the MIME type of the requested page.What are - [Flash Suit](https://electricalschool.org/flashsuit/) - Flash Suit Definition: A complete FR clothing and equipment system that covers the entire body, except for the hands and feet. This includes pants, jacket, and bee-keeper-type hood fitted with a face shield. - [Flashover](https://electricalschool.org/flashover/) - Flashover Definition: An unintended electrical discharge to ground or another phase. Flashovers can occur between two conductors, across insulators to ground or equipment bushings to ground. Related Links Flashover - Wikipedia[TITLE]Login - Fire EngineeringFlashover - SKYbrary Aviation SafetyFlashover | Definition of Flashover by Merriam-Websterflashover | Definition of flashover in English by Oxford Dictionaries Related Videos - [FA](https://electricalschool.org/fa/) - FA Definition: Forced-Air, a cooling classification for transformers now classified as ONAF. Oil type, Forced circulation through cooling (i.e. cooling pumps) and natural convection flow in windings. Related Links Forced-air - WikipediaWhat Is Forced Air Heating? | Carney Plumbing, Heating & Air Conditioning | Bucks & Montgomery County, PAForced Air Systems - Everything You Need - [Farad](https://electricalschool.org/farad/) - Farad Definition: The capacitance value of a capacitor of which there appears a potential difference of one volt when it is charged by a quantity of electricity equal to one coulomb. Related Links Farad - Wikipedia Related Videos What is a Farad? An Explanation View More Capacitors - Electrostatic Field, Dielectric, Capacitor Types, FARAD, View - [Fault Close Rating](https://electricalschool.org/faultcloserating/) - Fault Close Rating Definition: The ability, in amps, of a switching device to "close" into a fault of specific magnitude, without excessive arcing. Related Links Understanding LV Circuit Breaker Fault RatingsFault Current Rating, IC Rating... - Electrician Talk - Professional Electrical Contractors ForumFault Ratings[TITLE]620.16 Short-Circuit Current Rating.What do symmetrical, asymmetrical, momentary, interrupting, close & latch - [Fault Indicator](https://electricalschool.org/faultindicator/) - Fault Indicator Definition: A device installed on a conductor to determine if current exceeded the indicator's current rating. Fault indicators sense using use the magnetic field induced by load current. Related Links Fault indicator - Wikipedia406 - Client browser does not accept the MIME type of the requested page.[TITLE] Related Videos FLA3 - Fault Passage - [Federal Energy Regulatory Commission (FERC)](https://electricalschool.org/federalenergyregulatorycommissionferc/) - Federal Energy Regulatory Commission (FERC) Definition: FERC is an independent regulatory agency within the U.S. Department of Energy that approves rates for wholesale electricity transactions and transmission of electricity in interstate commerce for utilities, power marketers, power pools, power exchanges an Related Links FERC: About FERCFederal Energy Regulatory Commission - Wikipedia Related Videos What is - [Ferro resonance](https://electricalschool.org/ferroresonance/) - Ferro resonance Definition: In transformers, an over-voltage condition that can occur when the core is excited through capacitance in series with the inductor. This is especially prevalent in transformers that have very low core losses. It can generally be prevented by having a lo Related Links Ferroresonance in electricity networks - Wikipedia[TITLE]Ferro resonance occurrence in - [Energy Management System](https://electricalschool.org/energymanagementsystem/) - Energy Management System Definition: A system in which a dispatcher can monitor and control the flow of electric power by opening and closing switches to route electricity or to isolate a part of the system for maintenance. It is also used to control the amount of generation needed to serve Related Links Energy Management Systems - [Entrainment (Battery)](https://electricalschool.org/entrainmentbattery/) - Entrainment (Battery) Definition: The process whereby gasses generated in the cell carry electrolyte through the vent cap. Related Links Entrainment (engineering) - Wikipediaentrainment - Wiktionary - [EPDM](https://electricalschool.org/epdm/) - EPDM Definition: Ethylene Propylene Dione Monomer. This is a synthetic rubber compound used as insulation in making electrical components. Related Links EPDM rubber - WikipediaEPDM Rubber | Ethylene Propylene Diene Monomer RubberEPDMEPDM rubber (ethylene propylene diene monomer)Ethylene Propylene Diene Monomer - Minnesota Rubber and PlasticsEffects of virgin Ethylene–Propylene–Diene–Monomer and its preheating time on the properties - [EPR](https://electricalschool.org/epr/) - EPR Definition: Ethylene Propylene Rubber, a synthetic rubber compound that is used as cable insulation. Related Links Ethylene propylene rubber - WikipediaEthylene Propylene Rubbers – Properties and Applications of Ethylene Propylene Diene (EPDM) and Ethylene Propylene Copolymers (EPM)Ethylene-propylene copolymer | chemical compound | Britannica.comEthylene Propylene Rubber Foam — Thermal Conductivity - NETZSCH Analyzing & TestingEthylene - [EPROM](https://electricalschool.org/eprom/) - EPROM Definition: Electrically Programmable Read Only Memory. Related Links EEPROM - Wikipedia Related Videos Solid State Memory - PROM, EPROM, EEPROM View More Vintage First EPROM Erasable Programmable Read Only Memory 1702 View More Chip on Breadboard - 2716 EPROM View More How to Select the Right EEPROM For Your Application View More Solid State - [Eutectic](https://electricalschool.org/eutectic/) - Eutectic Definition: An alloy used to form the melting point of a fuse. It is frequently silver or tin based. Related Links Eutectic system - Wikipedia Related Videos What is a Eutectic? View More Muddiest Point- Phase Diagrams I: Eutectic Calculations and Lever Rule View More What is eutectic temperature? View More 3.1 | MSE104 - [Exciting Current](https://electricalschool.org/excitingcurrent/) - Exciting Current Definition: The magnetizing current of a device such as a transformer. Also known a field current. Related Links What is exciting current? - MGM Transformer CompanyWhat is an exciting or excitation current? | HPS | Hammond Power SolutionsExciting Current | Definition of Exciting Current by Merriam-Webster[TITLE]406 - Client browser does not accept the - [Extra High Voltage](https://electricalschool.org/extrahighvoltage/) - Extra High Voltage Definition: An electrical system or cable designed to operate at 345kv (nominal) or higher. Related Links What is extra high voltage? - QuoraExtra-High-Voltage Transmission | 735 kV | Hydro-QuébecExtra High Voltage (EHV) definitions - Defined TermExtra-high voltage - definition of extra-high voltage by The Free DictionaryTransmission of electric power at ultra-high voltages: - [Electrically Safe Work Condition](https://electricalschool.org/electricallysafeworkcondition/) - Electrically Safe Work Condition Definition: A state in which the conductor or circuit part to be worked on or near has been disconnected from energized parts, locked/tagged in accordance with established standards, tested to ensure the absence of voltage, and grounded if determined necessary. Related Links Establishing an Electrically Safe Work Condition | Electrical Contractor - [Electrolyte (Battery)](https://electricalschool.org/electrolytebattery/) - Electrolyte (Battery) Definition: In a lead-acid battery, the electrolyte is sulfuric acid diluted with water. It is a conductor and also a supplier of hydrogen and sulfate ions for the reaction. Related Links BU-307: How does Electrolyte Work? – Battery UniversityWhen Does a Battery Need ElectrolyteElectrolyte - WikipediaBattery Electrolyte (LiPF6) for Lithium-ion Cell Manufacturers | - [Electromechanical Relay](https://electricalschool.org/electromechanicalrelay/) - Electromechanical Relay Definition: An electrical relay in which the designed response is excited by a relative mechanical movement of elements under the action of a current in the input circuit. Related Links What Are Electromechanical Relays? - Types of RelaysElectromechanical Relays Information | Engineering360Electromechanical Relay Circuit Working with ApplicationsElectromechanical RelayRelay Construction | Electromechanical Relays | - [Embedded Generation](https://electricalschool.org/embeddedgeneration/) - Embedded Generation Definition: Generation that is connected to a distribution system possibly at LV instead of HV. Related Links Embedded generation and information packsEmbedded Generation | Energy Networks Australia[TITLE]EMBEDDED GENERATION[TITLE][TITLE][TITLE]Embedded generation - AusgridEmbedded Generation | Alectra Utilities Related Videos Distributed Generation View More Goanna Energy Consulting Renewable Energy Embedded Generation Tasmania View More Checklist for - [EMTP](https://electricalschool.org/emtp/) - EMTP Definition: Electromagnetic Transients Program Related Links Emtp - Wikipedia[TITLE]CYME International - Software, Electromagnetic Transient ProgramCreating an Electromagnetic Transients Program in MATLAB: MatEMTP - IEEE Journals & Magazine Related Videos ElectroMagnetic Transient Program EMTP View More Analysis of Electromagnetic Transients in Power Systems View More 2.ElectroMagnetic Transient Program EMTP View More Design, Analyze & Operate - [End Point Voltage](https://electricalschool.org/endpointvoltage/) - End Point Voltage Definition: Battery Voltage reached at the termination of a discharge. Also Known as the Cut Off Voltage. Related Links Battery End Point Voltage (Final Voltage) | LinkedInEnd-Point Voltage[TITLE]Cutoff voltage - WikipediaBattery Voltage Information – Battery UniversityGlossary of Battery TermsGlossary of Battery Terms[TITLE] Related Videos How To Compute Voltage Drop View More How - [End-of-Discharge Voltage](https://electricalschool.org/end-of-dischargevoltage/) - End-of-Discharge Voltage Definition: The voltage of a battery at the termination of a discharge but before the discharge is stopped. Related Links Chapter 5: Discharge Methods | Batteries in a Portable WorldBattery Discharge Methods – Battery University406 - Client browser does not accept the MIME type of the requested page.[TITLE]Cutoff voltage - WikipediaGlossary of Battery - [End-Point Voltage](https://electricalschool.org/end-pointvoltage/) - End-Point Voltage Definition: The Cell or Battery voltage at which point the rated discharge capacity has been delivered at a specific Rate-of-Discharge. It is also used to specify the cell or battery voltage below which the connected equipment will not operate or below which operati Related Links Battery End Point Voltage (Final Voltage) | LinkedInEnd-Point - [Earthing Transformer](https://electricalschool.org/earthingtransformer/) - Earthing Transformer Definition: A three-phase transformer intended essentially to provide a neutral point to a power system for the purpose of grounding. Related Links Grounding transformer - WikipediaWhat is Earthing Transformer or Grounding TransformerEarthing (grounding) transformer - Voltages during a ground faultWhat is the difference between earthing, grounding and neutral? - QuoraTypes of Neutral Earthing - [Eddy Current](https://electricalschool.org/eddycurrent/) - Eddy Current Definition: The current that is generated in a transformer core due to the induced voltage in each lamination. It is proportional to the square of the lamination thickness and to the square of the frequency. Related Links Eddy current - Wikipedia[TITLE]Eddy CurrentsWhat are Eddy Currents?What are eddy currents and how do eddy current - [EEI](https://electricalschool.org/eei/) - EEI Definition: Edison Electric Institute. Related Links About EEIEdison Electric Institute - Wikipedia[TITLE][TITLE][TITLE][TITLE][TITLE][TITLE][TITLE] Related Videos Edison Electric Institute President, Tom Kuhn View More Brian Wolff, Executive VP at Edison Electric, at EEI 2015 View More ASAE - Edison Electric Institute View More Edison Electric Institute President, Tom Kuhn View More Brian Wolff, Executive VP at - [EERA](https://electricalschool.org/eera/) - EERA Definition: Electrical Equipment Representatives Association. EERA is an association of electrical manufacturers representatives. Additional information on EERA can be found at www.eera.org. Young & Company is a member of EERA. Related Links EERA - Electrical Equipment Representatives Association - [Effective Internal Resistance (Battery)](https://electricalschool.org/effectiveinternalresistancebattery/) - Effective Internal Resistance (Battery) Definition: The apparent opposition to current within a battery that manifests itself as a drop in battery voltage proportional to discharge current. Its value is dependent on battery design, state-of-charge, temperature and age. Related Links Emf and Internal ResistanceRising Internal Resistance - Battery UniversityInternal resistance - WikipediaMeasuring Internal Resistance of Batteries - [Effectively Grounded](https://electricalschool.org/effectivelygrounded/) - Effectively Grounded Definition: Intentionally connected conductors or electric equipment to earth, where the connection and conductors are of sufficiently low impedance to allow the conducting of an intended current. Related Links Defining Effective Grounding in Article 250 | Electrical Contractor Magazine[TITLE]406 - Client browser does not accept the MIME type of the requested page.Effectively Grounded[TITLE][TITLE] - [Electrical Hazard](https://electricalschool.org/electricalhazard/) - Electrical Hazard Definition: A dangerous condition such that contact or equipment failure can result in electric shock, arc flash burn, thermal burn, or blast. Related Links [TITLE]WSPS - Electrical HazardsElectrical HazardFive Electrical Hazards Worth RememberingElectricity - Healthy Working LivesElectrical hazards - worksafe.qld.gov.au4 Common Electrical Hazards in the Workplace - Kirby Electric8 Most Dangerous Home Electrical - [Electrical Relay](https://electricalschool.org/electricalrelay/) - Electrical Relay Definition: A device designed to produce sudden predetermined changes in one or more electrical circuits after the appearance of certain conditions in the controlling circuit. Related Links Relay - WikipediaElectrical Relay and Solid State Relays for SwitchingHow Relays Work | Relay diagrams, relay definitions and relay typesHow do relays work? - Explain that - [Double Arming Bolt](https://electricalschool.org/doublearmingbolt/) - Double Arming Bolt Definition: A special long bolt used to assemble two cross arms, one on each side of the pole. Related Links Double Arming Bolt | Allied Bolt Products LLC Related Videos Tower & Pole Line View More Tower & Pole Line View More - [Draw-Lead](https://electricalschool.org/draw-lead/) - Draw-Lead Definition: A cable or solid conductor that has one end connected to the transformer or a reactor winding and the other end drawn through the bushing hollow tube and connected to the top terminal of the bushing. Related Links [TITLE] Related Videos H-J and MGC Draw Lead Bushing Connector View More H-J and MGC - [Drop-Out](https://electricalschool.org/drop-out/) - Drop-Out Definition: A relay drops out when it moves from the energized position to the un-energized position. Related Links Pick Up and Drop Out Voltage of Relays | Panasonic Industrial DevicesWhat are "pick-up", "dropout" and "rated" voltages in a Relay datasheet? - Electrical Engineering Stack Exchange[TITLE]Information about RelaysRelay Terminology | Automation Controls | Industrial Devices - [Dry Charge (Battery)](https://electricalschool.org/drychargebattery/) - Dry Charge (Battery) Definition: The process by which the electrodes are formed and assembled in a charged state. The cell or battery is activated when electrolyte is added. Related Links Activating Dry Charged Batteries : Technical Support DeskBattery Activation and Charging Procedure for Dry Charged Batteries | Battery BlogBattery FundamentalsWater Loss, Acid Stratification and Surface - [Dry-Type Transformers](https://electricalschool.org/dry-typetransformers/) - Dry-Type Transformers Definition: Transformers that use only dry-type materials for insulation. These have no oils or cooling fluids and rely on the circulation of air about the coils to provide necessary cooling. Such units are usually limited in size to a few hundred kVA because of prob Related Links Dry Type Transformers for indoor and - [DTIM](https://electricalschool.org/dtim/) - DTIM Definition: Delivery Traffic Indication Message. A DTIM is a signal sent as part of a beacon by an access point to a client device in sleep mode, alerting it that a packet of data awaits delivery. Related Links Delivery traffic indication message - WikipediaDTIM - Delivery Traffic Indication Message - MpiricalWhat is the wireless - [Dual Voltage Switch](https://electricalschool.org/dualvoltageswitch/) - Dual Voltage Switch Definition: A switch used to select primary windings of a transformer. [TITLE] Related Videos 1/2 Hp Dual Voltage Single Phase Motor Rebuild View More Dual Voltage, 3 Phase, 9 Lead Wye Motor Connections #1 View More Is Your Appliance Dual Voltage? View More 1/2 Hp Dual Voltage Single Phase Motor Rebuild View - [Dual Voltage Transformer](https://electricalschool.org/dualvoltagetransformer/) - Dual Voltage Transformer Definition: A transformer that has switched windings allowing its use on two different primary voltages. Related Links Dual Voltage Transformers[TITLE]Multiple Winding Transformer and Multicoil TransformersCriteria for reliable dual voltage power transformers - IEEE Conference Publication Related Videos DC || Dual Power Supply with Voltage doubler circuit (AC to DC Converter)using diode & - [Discharge Rate (Battery)](https://electricalschool.org/dischargeratebattery/) - Discharge Rate (Battery) Definition: The rate of current flow from a cell or battery. Related Links Battery Discharge Methods – Battery UniversityChapter 5: Discharge Methods | Batteries in a Portable WorldBattery Performance Characteristics - How to specify and test a batterybatteries - What is a safe max. discharge rate for a 12V lead acid battery? - [Disconnect Switch](https://electricalschool.org/disconnectswitch/) - Disconnect Switch Definition: A simple switch that is used to disconnect an electrical circuit. It may or may not have the ability open while the circut is loaded. Related Links What Is a Safety Switch? | Disconnect Switch | Load Break Switches - [Distortion Factor](https://electricalschool.org/distortionfactor/) - Distortion Factor Definition: The ratio between the r.m.s. value of the harmonic content and the r.m.s. value of the non-sinusoidal quantity. Related Links Distortion factorDistortion factor | Article about distortion factor by The Free DictionaryTotal harmonic distortion - WikipediaUnderstanding Total Harmonic Distortion (THD) in Power Systems - [Distribution Automation](https://electricalschool.org/distributionautomation/) - Distribution Automation Definition: A system consisting of line equipment, communications infrastructure, and information technology that is used to gather intelligence about a distribution system. It provides analysis and control in order to optimize operating efficiency and reliability. Related Links [TITLE]What is Distribution Automation? | Tait Radio AcademyIntelligent Distribution Automation Devices - Silver SpringAn overview on - [Distribution Transformer](https://electricalschool.org/distributiontransformer/) - Distribution Transformer Definition: A transformer that reduces voltage from the supply lines to a lower voltage needed for direct connection to operate consumer devices. Related Links Distribution transformer - WikipediaThe difference between distribution and power transformers - ABB Conversations - [Distribution Voltage](https://electricalschool.org/distributionvoltage/) - Distribution Voltage Definition: A nominal operating voltage of up tp 38kV. Related Links Primary Distribution Voltage LevelsSiemens Corporate Website - ErrorElectric power distribution - Wikipedia - [Disturbed Network Protocol](https://electricalschool.org/disturbednetworkprotocol/) - Disturbed Network Protocol Definition: A proprietary communication protocol used on secondary networks between HMI, substation computers or bay computers and protective devices. Related Links Network Protocols – Programmer's CompendiumDenial-of-service attack - WikipediaUnderstanding and Configuring Spanning Tree Protocol (STP) on Catalyst Switches - CiscoImpact of routing protocols on packet retransmission over wireless networks - IEEE Conference - [DMZ](https://electricalschool.org/dmz/) - DMZ Definition: Demilitarized Zone. Networking has corrupted the term and used it to refer to an unprotected subnet connected to a local network, but outside the protection of a firewall. Related Links DMZ (computing) - WikipediaWhat is DMZ (demilitarized zone)? - Definition from WhatIs.comWhat is the real function and use of a DMZ on a - [Digital Signal Processor](https://electricalschool.org/digitalsignalprocessor/) - Digital Signal Processor Definition: A microprocessor optimized in hardware design and software instruction set for the processing of analog signals digitally. This is achieved by DFT and similar techniques. Related Links Digital signal processing - WikipediaA Beginner's Guide to Digital Signal Processing (DSP) | Design Center | Analog Devices Related Videos What is a DSP? - [Dip Tolerance (Lighting)](https://electricalschool.org/diptolerancelighting/) - Dip Tolerance (Lighting) Definition: With regard to outdoor lighting, the percentage of instantaneous voltage variation from normal that is required to extinguish a light source. Related Links Definition Dip Tolerance (Lighting)- Electric CalcsVoltage Sags (Dips) and Swells - Power Standards Lab[TITLE][TITLE] - [Dipole Antenna](https://electricalschool.org/dipoleantenna/) - Dipole Antenna Definition: A type of antenna commonly used in wireless networking devices. It has a signal range of 360 degrees horizontally and 75 degrees vertically. Related Links Dipole antenna - WikipediaDipole Antenna | Dipole Aerial Theory | TutorialThe Dipole AntennaWhat is dipole antenna? - Definition from WhatIs.comYour first antenna - the half-wave dipole - - [Direct Current](https://electricalschool.org/directcurrent/) - Direct Current Definition: Electric current in which electrons flow in one direction only. Opposite of alternating current. Related Links Direct current - WikipediaAlternating Current (AC) vs. Direct Current (DC) - learn.sparkfun.comWhat is DC (direct current)? - Definition from WhatIs.comWhat is DC or Direct Current? - Sunpower UK Related Videos AC vs. DC View More Difference - [Directional Relay](https://electricalschool.org/directionalrelay/) - Directional Relay Definition: A protection relay in which the tripping decision is dependent in part upon the direction in which the measured quantity is flowing. Related Links Finding the Direction in Directional Overcurrent Relays • Valence Electrical Training Services; Finding the Direction in Directional Overcurrent Relays • Valence Electrical Training Services406 - Client browser does - [Direct-on-Line](https://electricalschool.org/direct-on-line/) - Direct-on-Line Definition: A method of motor starting, which full line voltage is applied to a stationary motor. Related Links Direct On Line (DOL) Motor Starter Related Videos Direct Online Starter View More How to wire contactor and motor protection switch - Direct On Line Starter. View More How to Wire Contactor and Motor Protection Switch - [Discharge (Battery)](https://electricalschool.org/dischargebattery/) - Discharge (Battery) Definition: The conversion of the chemical energy of a cell or battery into electrical energy and withdrawal of the electrical energy into a load. Related Links Self-discharge - WikipediaBattery Discharge Methods – Battery University[TITLE][TITLE] Related Videos Battery Charge Vs Discharge And Why It Matters View More Quick and Easy LiPo Battery Discharge View - [Discharge Current](https://electricalschool.org/dischargecurrent/) - Discharge Current Definition: The surge current that is dissipated through a surge arrester. Related Links Battery discharge currentBattery Discharge Methods – Battery Universitybatteries - Standard current and discharge current - Electrical Engineering Stack ExchangeRC Discharging Circuit Tutorial & RC Time ConstantHow to Calculate Battery Discharge Rate | SciencingMax Lead Acid Discharge Current.Runtime, capacity and discharge - [Device Control Point](https://electricalschool.org/devicecontrolpoint/) - Device Control Point Definition: Local keypad on device level to control the switchgear often combined with local or remote switch. Related Links What is Device Control? A Device Control Definition | Digital GuardianSignal Transfer Point - Wikipedia - [DFT](https://electricalschool.org/dft/) - DFT Definition: Discrete Fourier Transform Related Links Discrete Fourier transform - WikipediaDiscrete Fourier Transform -- from Wolfram MathWorld[TITLE]An Introduction to the Discrete Fourier TransformDigital Signal Processing/Discrete Fourier Transform - Wikibooks, open books for an open worldThe Discrete Fourier Transform Related Videos Discrete Fourier Transform - Simple Step by Step View More How the Discrete Fourier - [Dielectric](https://electricalschool.org/dielectric/) - Dielectric Definition: 1) Any electrical insulating medium between two conductors. 2) The medium used to provide electrical isolation or separation. Related Links Dielectric - WikipediaDielectric | physics | Britannica.comWhat is dielectric material? - Definition from WhatIs.comDielectrics – The Physics HypertextbookDielectrics Related Videos Dielectrics in capacitors | Circuits | Physics | Khan Academy View More Dielectrics - [Dielectric Constant](https://electricalschool.org/dielectricconstant/) - Dielectric Constant Definition: A number that describes the dielectric strength of a material relative to a vacuum, which has a dielectric constant of one. Related Links Dielectric constant | physics | Britannica.comWhat is dielectric constant? - Definition from WhatIs.comDielectric Constants[TITLE]Dielectric constant definition and meaning | Collins English Dictionary Related Videos Dielectrics and Dielectric Constant View - [Dielectric Grease](https://electricalschool.org/dielectricgrease/) - Dielectric Grease Definition: A silicone based chemical compound used to seal and lubricate connections between medium voltage connectors such as cable termination elbows. Related Links Dielectric Grease vs Conductive GreaseSilicone grease - Wikipedia Related Videos Dielectric Grease applications (Electrical Maintenance) View More Dielectric Grease - The PROPER way to apply it. View More What is - [Dielectric Strength](https://electricalschool.org/dielectricstrength/) - Dielectric Strength Definition: The maximum voltage an insulation system can withstand before breakdown, expressed in volts per mil of insulation thickness. Related Links FAQ: What is dielectric strength | Eland CablesDielectric strength - WikipediaDielectric Strength ASTM D 149 IEC 80243Dielectric strength | Define Dielectric strength at Dictionary.comDielectric StrengthDielectric strength definition and meaning | Collins English - [Dielectric Test](https://electricalschool.org/dielectrictest/) - Dielectric Test Definition: A test that is used to verify an insulation system. A voltage is applied of a specific magnitude for a specific period of time. Related Links Dielectric withstand test - WikipediaDIELECTRIC TESTING | Gigavac[TITLE]dielectric strength test; Sefelec : Policy QualityWhat is HIPOT Testing (Dielectric Strength Test)?[TITLE][TITLE]406 - Client browser does not accept - [Dielectric Withstand](https://electricalschool.org/dielectricwithstand/) - Dielectric Withstand Definition: The ability of insulating materials and spacing's to withstand specified overvoltage's for a specified time (one minute unless otherwise stated) without flashover or puncture. Related Links Dielectric withstand test - Wikipedia[TITLE]dielectric withstand test; Sefelec : Policy QualityThe Dielectric Withstand (Hi-pot) Test | In Compliance MagazineWhat is Dielectric Withstand Voltage?[TITLE]dielectric withstand Archives - - [Dielectric Withstand Voltage Test](https://electricalschool.org/dielectricwithstandvoltagetest/) - Dielectric Withstand Voltage Test Definition: The test to determine Dielectric Withstand. Related Links Dielectric withstand test - Wikipedia[TITLE]dielectric withstand test; Sefelec : Policy QualityDIELECTRIC TESTING | Gigavac406 - Client browser does not accept the MIME type of the requested page.What is HIPOT Testing (Dielectric Strength Test)?The Dielectric Withstand (Hi-pot) Test | In Compliance Magazine Related - [Deep Discharge (Battery)](https://electricalschool.org/deepdischargebattery/) - Deep Discharge (Battery) Definition: Withdrawal of 50% or more of the rated capacity of a cell or battery. Related Links Deep-cycle battery - WikipediaDeep Cycle Battery InformationDeep Cycle Battery FAQ Related Videos What is a Deep Cycle Battery? View More Battery Charge Vs Discharge And Why It Matters View More DEEP CYCLE BATTERY HACK?! Fix - [De-ionization Time](https://electricalschool.org/de-ionizationtime/) - De-ionization Time Definition: The time required for dispersion of ionized air after a fault is cleared so that the arc will not re-strike on re-energization. Related Links Deionization time | Article about deionization time by The Free DictionaryDefinitions of deionization time - OneLook Dictionary SearchEffect of deionization time on reclosing circuit breakers - IEEE Journals - [Delta-Wye](https://electricalschool.org/delta-wye/) - Delta-Wye Definition: Refers to a transformer that is connected Delta on the primary side and Wye on the secondary. Related Links Delta-wye transformer - WikipediaDelta-Wye resistor networks (article) | Khan AcademyDelta-Wye Conversions | IAEI MagazineWatlow | 3-Phase Delta / Wye Calculator Related Videos Chalk Talk: Delta Wye View More Example on Wye-Delta Conversion View More - [Dependent Time Measuring Relay](https://electricalschool.org/dependenttimemeasuringrelay/) - Dependent Time Measuring Relay Definition: A measuring relay for which times depend, in a specified manner, on the value of the characteristic quantity. Related Links Time-Delay Relay | Article about Time-Delay Relay by The Free DictionaryProtective relay - WikipediaHow to Choose the Right Relay - National Instruments Related Videos #281: Bipolar Transistor Switching Time Measurement - [Depth of Discharge](https://electricalschool.org/depthofdischarge/) - Depth of Discharge Definition: The portion of the nominal capacity from a cell or battery taken out during each discharge cycle, expressed in percent. Shallow Depth of Discharge is considered as 10% or less. Deep Discharge is considered 50% or more. Related Links Depth of Discharge | energymagWhat is depth of discharge (DOD)?Depth of discharge - [Derating](https://electricalschool.org/derating/) - Derating Definition: Calculations that reduce standard tabulated ratings based, generally based on ambient temperature or proximity to a heat source. Related Links Derating+[Unterlastung] — ? ??????????? ?? ???????[TITLE] Related Videos F1 Explained: What is De-Rating? View More Ampacity & Derating 08 27 13 View More Derating and Power Max View More What is DERATING? View - [DES](https://electricalschool.org/des/) - DES Definition: Data Encryption Standard. DES is an encryption, method that uses an algorithm for private key encryption, in which the sender uses the same private key as the recipient uses to decode it. Related Links Data Encryption Standard - WikipediaWhat is Data Encryption Standard (DES)? - Definition from WhatIs.comData Encryption StandardData Encryption Standard | - [Design Load](https://electricalschool.org/designload/) - Design Load Definition: The actual, expected load or loads that a device or structure will support in service. Related Links Design load - WikipediaDesign Load & Service Load - Structural engineering other technical topics - Eng-Tips406 - Client browser does not accept the MIME type of the requested page.design load - WiktionaryDesign load | Article - [Current Transformer Ratio](https://electricalschool.org/currenttransformerratio/) - Current Transformer Ratio Definition: 1) The ratio of primary amps divided by secondary amps. 2) The current ratio provided by the windings of the CT. For example, a CT that is rated to carry 200 Amps in the primary and 5 Amps in the secondary, would have a CT ratio of 200 to 5 or - [Cut Off Voltage](https://electricalschool.org/cutoffvoltage/) - Cut Off Voltage Definition: Battery Voltage reached at the termination of a discharge. Also Known as the End Point Voltage (EPV). Related Links What is Cut-off Voltage? - UPS Battery CenterCutoff voltage - WikipediaPremature Voltage Cut-off - Battery UniversityWhat is cut in and cutoff voltages? - Quora Related Videos Cut-off voltage View More EEVblog #779 - [Cycle](https://electricalschool.org/cycle/) - Cycle Definition: In Alternating current, the change of the poles from negative to positive and back. - [DA Bolt](https://electricalschool.org/dabolt/) - DA Bolt Definition: A Double Arming Bolt. Related Links Double Arming Bolt | Allied Bolt Products LLCDouble Arming Bolts Related Videos Tower & Pole Line View More Pole line hardware for mounting messenger wire to pole View More Tower & Pole Line View More Pole line hardware for mounting messenger wire to pole View More - [De-energized](https://electricalschool.org/de-energized/) - De-energized Definition: Free from any electrical connection to a source of potential difference and from electrical charge. A circuit is not truly de-energized until protective grounds have been installed. Related Links Deenergized | Define Deenergized at Dictionary.comDe-energize | Definition of De-energize by Merriam-Websterde-energize | Definition of de-energize in US English by Oxford DictionariesElectric Power eTool: - [CSP](https://electricalschool.org/csp/) - CSP Definition: Completely Self-Protected transformer. Related Links KotsonsConventional or CSP Pole Mounted Transformer[TITLE]Completely Self-Protected Transformers : TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONCompletely self-protected transformer (CSP type) -DSTAR - Completely Self-Protected Transformer Evaluation[TITLE] Related Videos Distribution Transformer | 15 Things About Distribution Transformers View More Transformer Monitoring & Protection - Chapter One View More Transformer Monitoring - [CST](https://electricalschool.org/cst/) - CST Definition: Customer Subsurface Transformer. Related Links [TITLE][TITLE]406 - Client browser does not accept the MIME type of the requested page.406 - Client browser does not accept the MIME type of the requested page.Padmount transformer - Wikipedia Related Videos Transformer Banks: Overview View More Fault Wizard Primary Cable Fault Detector training and demo View More - [Cu](https://electricalschool.org/cu/) - Cu Definition: The chemical symbol for copper. Related Links Copper - WikipediaCopper - Simple English Wikipedia, the free encyclopedia Related Videos The Red Metal - Copper Documentary View More Copper's Surprising Reaction to Strong Magnets | Force Field Motion Dampening View More How to Solder Copper Pipe The CORRECT Way | GOT2LEARN View More Copper - [CU (Lighting)](https://electricalschool.org/culighting/) - CU (Lighting) Definition: Coefficient of Utilization Related Links Coefficient of utilization (cu)Coefficient of utilization - Wikipediacoefficient of utilization, CU | IESWhat is coefficient of utilization (CU)? definition and meaning - BusinessDictionary.comSAGE Journals: Your gateway to world-class journal researchCoefficient of Utilization, Lumen Method | SpringerLinkInside the System: Coefficient of Utilization[TITLE][TITLE] Related Videos Lecture - 18 Lighting - [Current](https://electricalschool.org/current/) - Current Definition: The movement of electrons in a conductor measured in Amperes. Related Links Electric current - WikipediaElectric CurrentWhat Is Electric Current?Electric currentElectrical Current Definition Related Videos Electric Current: Crash Course Physics #28 View More What is Electric Current? View More Electric Current & Circuits Explained, Ohm's Law, Charge, Power, Physics Problems, Basic Electricity View - [Current Limiting Fuse](https://electricalschool.org/currentlimitingfuse/) - Current Limiting Fuse Definition: A fuse designed to reduce damaging extremely high current. Related Links 406 - Client browser does not accept the MIME type of the requested page.[TITLE] Related Videos Improving Electrical Safety Using Current-Limiting Fuses View More ELF Current Limiting Dropout Fuse View More How a Current Limiting Protector Works View More Ferraz - [Current Transducer](https://electricalschool.org/currenttransducer/) - Current Transducer Definition: A transducer used for the measurement of A.C. current. Related Links What is a CT? Current Transformer or Current Transducer?Current Transducer - Veris Industries Related Videos How a Current Switch Current Transducer works View More How to use a multimeter for advanced measurements: Part 2 - Current Probes / clamps / transducers - [Current Transformer](https://electricalschool.org/currenttransformer/) - Current Transformer Definition: A transformer used to measure the amount of current flowing in a circuit by sending a lower representative current to a measuring device such as a meter. Related Links Current transformer - WikipediaCurrent Transformer Basics and the Current TransformerWhat Are the Functions of a Current Transformer? | Sciencing Related Videos Introduction to - [Corona Discharge](https://electricalschool.org/coronadischarge/) - Corona Discharge Definition: An electrical discharge at the surface of a conductor accompanied by the ionization of the surrounding atmosphere. It can be accompanied by light and audible noise. Related Links Corona discharge - WikipediaCorona discharge - its effects and methods of reducing it | electricaleasy.comCorona discharge definition and meaning | Collins English Dictionary[TITLE]Corona discharge - [Coulomb](https://electricalschool.org/coulomb/) - Coulomb Definition: A unit of electric charge in SI units (International System of Units). A Coulomb is the quantity of electric charge that passes any crossection of a conductor in one second when the current is maintained constant at one ampere. Related Links Coulomb - WikipediaCoulomb | Define Coulomb at Dictionary.comWhat is coulomb? - Definition - [Counter EMF](https://electricalschool.org/counteremf/) - Counter EMF Definition: Voltage or cell or battery opposing the voltage of the charging source. Related Links [TITLE] Related Videos back emf explained View More How Electromotive Force Works View More Counter EMF | How a DC motor accelerate | You will not get Easiest explanation than this. View More 08 Counter EMF View More - [Counting Relay](https://electricalschool.org/countingrelay/) - Counting Relay Definition: A relay that counts the number of times it is energized and actuates an output after a desired count has been reached. Related Links [TITLE]302 FoundRelay Count - NI Switches Help - National Instruments Related Videos Fast counting on my relay computer View More Count Up counter with relay switch repeat View - [CPE](https://electricalschool.org/cpe/) - CPE Definition: Chlorinated Polyethylene. CPE is a thermoplastic compound that is used to jacket certain types of power cable. Related Links Chlorinated polyethylene - WikipediaChlorinated Polyethylene (CPE) - Weipren CPE supplied by Lianda CorporationChlorinated Polyethylene (CPE) Health & Environment[TITLE]Dow Tyrin® 3611P Chlorinated Polyethylene Elastomer Related Videos chlorinated polyethylene cpe 135a manufacturer View More chlorinated polyethylene - [C-Rate](https://electricalschool.org/c-rate/) - C-Rate Definition: Battery discharge current in amperes; numerically equal to rated capacity of a cell in ampere-hours. Related Videos Battery amp-hour, watt-hour and C rating tutorial View More Battery amp-hour, watt-hour and C rating tutorial View More - [Creepage Distance](https://electricalschool.org/creepagedistance/) - Creepage Distance Definition: The shortest distance between two conductors as measured along the device that separates them. Creepage Distance is normally a design parameter of insulators or insulating bushings. Related Links What is creepage distance of insulator? - QuoraClearance and Creepage Distances - PTRWhat is 'creepage distance' and what factors affect this? - Quoraclearance - - [Crest Value](https://electricalschool.org/crestvalue/) - Crest Value Definition: The maximum value of a wave form. This is normally associated with electrical fault magnitude or transients. Related Links [TITLE]US Patent # 9,864,057. Ultrasonic object detection device - Patents.com Related Videos Average value,rms value,Rectified mean,Crest factor,Form Factor (electronics2electrical.com) View More RMS (Root Mean Square) Value and Average Value of AC Signals View - [Cross-Linked Polyethylene (XLPE)](https://electricalschool.org/cross-linkedpolyethylenexlpe/) - Cross-Linked Polyethylene (XLPE) Definition: A Common thermoset insulation material for building wire and cable. It undergoes a cross linking chemical reaction during a curing process that causes the compound molecules to bond, forming heavier molecules. Related Links Cross-linked polyethylene - Wikipedia Related Videos What is XPE (Crosslinked polyethylene) Foam and its application View More Water - [Constant Current Charge](https://electricalschool.org/constantcurrentcharge/) - Constant Current Charge Definition: Charging technique where the output current of the charge source is held constant. Related Links Constant Current Charging - Battery - Engineers EdgeConstant current battery charger question - Electrical Engineering Stack ExchangePower Topics for Power Supply Users: Constant Voltage, Constant Current Battery ChargingBattery Chargers and Charging MethodsConstant-Voltage Constant-Current Devices | DigiKeyCharging - [Constant Potential Charge](https://electricalschool.org/constantpotentialcharge/) - Constant Potential Charge Definition: Charging technique where the output voltage of the charge source is held constant and the current is limited only by the resistance of the battery. Related Links Electric potential - WikipediaElectric potential of a charged sphereelectricity - Conductor held at constant potential - Physics Stack ExchangeWhat is the difference between constant - [Continuous Rating](https://electricalschool.org/continuousrating/) - Continuous Rating Definition: The constant voltage or current that a device is capable of sustaining. This is a design parameter of the device. Related Links Continuous rating | Article about continuous rating by The Free DictionaryWhat is meant by 'continuous rating' of a load in power system? - QuoraWhat is Continuous Rating Scale? definition and - [Copolymer](https://electricalschool.org/copolymer/) - Copolymer Definition: Chains of unlike molecules that are chemically bonded together Related Links Copolymer - WikipediaCopolymer | chemistry | Britannica.comCopolymerscopolymer - WiktionaryEastman Provista copolymer is tough and easy to work withAshland | Copolymer seriesIUPAC Gold Book - copolymerPEG/ PPG 116/ 66 COPOLYMER || Skin Deep® Cosmetics Database | EWG Related Videos Homopolymers and Copolymers View - [Core Loss](https://electricalschool.org/coreloss/) - Core Loss Definition: Power loss in a transformer due to excitation of the magnetic circuit (core). No load losses are present at all times when the transformer has voltage applied. Related Links Core Loss | Definition of Core Loss by Merriam-WebsterCore loss definition and meaning | Collins English Dictionary[TITLE]Magnetics - Core Loss CalculationHysteresis Eddy Current - [Compliance Voltage](https://electricalschool.org/compliancevoltage/) - Compliance Voltage Definition: The specified maximum voltage that a transducer (or other device) current output must be able to supply while maintaining a specified accuracy. Related Links What is Compliance Voltage? - Sunpower UK[TITLE]What is the compliance voltage of current source and the compliance current of voltage source? - QuoraCurrent source - Wikipedia Related Videos - [Compression Splice](https://electricalschool.org/compressionsplice/) - Compression Splice Definition: A compression connector used to join two conductors. There are different designs used for overhead and underground conductors. For overhead conductors, there are different designs for limited and full tension applications. Related Links Compression Splice Assembly | Preformed Line Products[TITLE][TITLE] Related Videos 3M? ACCR -- Installing a Compression Splice View More How - [Concentric Stranding](https://electricalschool.org/concentricstranding/) - Concentric Stranding Definition: A stranding configuration in which individual wires are stranded concentrically with no reduction in overall diameter. Typically used for bare conductors Related Links Conductor Stranding | Calmont Wire & CableConcentric strands | Wilhelm Müller - Fabrik für Feindrahtprodukte Related Videos POURTIER High Speed Concentric Stranding line View More taping and stranding line - [Conductivity](https://electricalschool.org/conductivity/) - Conductivity Definition: The capability of a conductor to carry electricity, usually expressed as a percent of the conductivity of a same sized conductor of soft copper Related Links Conductivity - WikipediaConductivity | Define Conductivity at Dictionary.comConductivityDefinition of Conductivity | Chegg.comConductivity | Definition of Conductivity by Merriam-WebsterConductivity | physics | Britannica.comResistivity and conductivity (video) | Khan - [Conductor](https://electricalschool.org/conductor/) - Conductor Definition: 1) A wire or combination of wires suitable for carrying an electrical current. Conductors may be insulated or bare. 2) Any material that allows electrons to flow through it. Related Links Electrical conductor - WikipediaWhat is conductor? - Definition from WhatIs.com10 Examples of Electrical Conductors and InsulatorsConductors and InsulatorsConductors and InsulatorsElectrical conductor - - [Conductor Shield](https://electricalschool.org/conductorshield/) - Conductor Shield Definition: A semiconducting material, normally cross-linked polyethylene, applied over the conductor to provide a smooth and compatible interface between the conductor and insulation. Related Links Shielded cable - Wikipediaelectrostatics - How does a conductor shield the outside from its inside - Physics Stack ExchangeElectrostatic Shielding | Harvard Natural Sciences Lecture DemonstrationsMulti-Conductor Cables | - [Conduit](https://electricalschool.org/conduit/) - Conduit Definition: A channel for holding and protecting conductors and cables, made of metal or an insulating material, usually circular in cross section like a pipe. Also referred to as Duct. Related Videos Electrical Code For Garages & Exposed Romex Wires View More Electrical Wiring- PVC Conduit View More 2 - 20mm2 PVC Conduit Installation - [Conduit Fill](https://electricalschool.org/conduitfill/) - Conduit Fill Definition: Volumetric measurement of the duct space occupied by the cables inside, expressed as a percent. Related Links Shielded cable - Wikipediaelectrostatics - How does a conductor shield the outside from its inside - Physics Stack ExchangeElectrostatic Shielding | Harvard Natural Sciences Lecture DemonstrationsFabric Tape Conductor Shield | NoviniumThe Electric Field Inside a - [Closing Impulse Time](https://electricalschool.org/closingimpulsetime/) - Closing Impulse Time Definition: The time during which a closing impulse is given to the circuit breaker. Related Links Impulse (physics) - WikipediaWhat are momentum and impulse? (article) | Khan AcademyForce, Momentum, and ImpulseImpulse of ForceMomentum and Impulse ConnectionHow to Calculate Force from Impulse and Momentum - dummies[TITLE]Impulse: Definition, Equation, Calculation & Examples - Video - [Closing Time](https://electricalschool.org/closingtime/) - Closing Time Definition: Referring to a circuit breaker it is the necessary time for it to close, beginning with the time of energizing of the closing circuit until contact is made in the CB. Related Links Breaker timing - zensol[TITLE]Circuit breaker timing test Procedure |[TITLE]What is the minimum opening time & closing time for the - [CO](https://electricalschool.org/co/) - CO Definition: Carbon Monoxide. Related Links Carbon monoxide - WikipediaCDC - Carbon Monoxide Poisoning - Frequently Asked Questions Related Videos How Carbon Monoxide Kills You View More Why is Carbon Monoxide So Deadly? - GTKAM View More About Carbon Monoxide and Carbon Monoxide Poisoning View More Carbon Monoxide warning signs inside your home View More - [Coaxial Cable](https://electricalschool.org/coaxialcable/) - Coaxial Cable Definition: Also known as "Coax", this cable is typically used to connect TV to its video source. Coaxial Cable consists of a small copper wire or tube, surrounded by an insulating material and another conductor with a larger diameter, normally copper braid or a cond Related Links Coaxial cable - WikipediaWhat is coaxial - [Coefficient of Utilization (CU)](https://electricalschool.org/coefficientofutilizationcu/) - Coefficient of Utilization (CU) Definition: The percentage of light generated within a luninaire which ultimately strikes the work surface. It is usually expressed as a decimal percentage. Related Links Coefficient of utilization - WikipediaCoefficient of utilization (cu)coefficient of utilization, CU | IESWhat is coefficient of utilization (CU)? definition and meaning - BusinessDictionary.comSAGE Journals: Your gateway - [Collector Roadway (Lighting)](https://electricalschool.org/collectorroadwaylighting/) - Collector Roadway (Lighting) Definition: The distributor and collector roadways servicing traffic between major and local roadways. These are roadways used mainly for traffic movements within residential, commercial and industrial areas. Related Links Collector road - WikipediaIIS 8.5 Detailed Error - 406.0 - Not AcceptableStreet Lighting | SF Better StreetsPublic Roads - The Future of Roadway - [Combination Unilay](https://electricalschool.org/combinationunilay/) - Combination Unilay Definition: A stranding configuration that uses two strand sizes to achieve a 3% reduction in the conductor diameter without compression Related Links 406 - Client browser does not accept the MIME type of the requested page.[TITLE]ASTM B787 / B787M - 04(2014) Standard Specification for 19 Wire Combination Unilay-Stranded Copper Conductors for Subsequent InsulationTypes - [Compact Stranding](https://electricalschool.org/compactstranding/) - Compact Stranding Definition: A stranding configuration with concentric strands in which each layer is passed through a compacting die to reduce the conductor diameter by approximately 10% Related Links [TITLE]Conductor Strand Types | AnixterWire and Cable Technology International – March/April 2014 : Why Use Compressed Conductors For Aerospace Cables?compact conductor - Electrician Talk - Professional - [Competition Transition Charge (CTC)](https://electricalschool.org/competitiontransitionchargectc/) - Competition Transition Charge (CTC) Definition: A charge itemized on customer bills to recover costs associated with investor owned utility investments in generation-related assets and state-mandated contracts with nonutility generators that may now be uneconomic and unrecoverable in the restructured e Related Links [TITLE]Important Definitions for ResidentsElectric Deregulation - Creates a Choice :: Unified Energy AllianceCalifornia - [Charge-Retention (Battery)](https://electricalschool.org/charge-retentionbattery/) - Charge-Retention (Battery) Definition: The tendency of a charges cell or battery to resist self-discharge. Related Links Elevating Self-discharge - Battery University406 - Client browser does not accept the MIME type of the requested page.Definitions[TITLE]Glossary of Battery Terms - House of BatteriesBatteries | Free Full-Text | Comparison among Constituent Phases in Superlattice Metal Hydride Alloys for - [Check Protection System](https://electricalschool.org/checkprotectionsystem/) - Check Protection System Definition: An auxiliary protection system intended to prevent tripping due to inadvertent operation of the main protection system. Related Links [TITLE]Lightning Protection System | Equipment MaintenanceLightning Protection Systems - Services | ULIs Your Lightning Protection Due for a Check-up? Why Maintenance is Key to Ensuring a Safe and Effective System. | Lightning - [Chlorinated Polyethylene](https://electricalschool.org/chlorinatedpolyethylene/) - Chlorinated Polyethylene Definition: Chlorinated Polyethylene. CPE, a thermoplastic compound, is used to jacket certain types of power cable. Related Links Chlorinated polyethylene - WikipediaChlorinated Polyethylene (CPE) - Weipren CPE supplied by Lianda CorporationChlorinated Polyethylene (CPE) Health & Environment[TITLE]Dow Tyrin® 3611P Chlorinated Polyethylene Elastomer Related Videos chlorinated polyethylene cpe 135a manufacturer View More chlorinated polyethylene cpe - [Circuit](https://electricalschool.org/circuit/) - Circuit Definition: A conductive path over which an electric charge may flow. Related Links Electrical circuit - Simple English Wikipedia, the free encyclopediaWhat is a simple electrical circuit?electrical circuit - Dictionary Definition : Vocabulary.comWhat is an Electric Circuit?Electric circuit - definition of electric circuit by The Free DictionaryElectric Circuits | Basic Concepts Of Electricity | - [Circuit Breaker](https://electricalschool.org/circuitbreaker/) - Circuit Breaker Definition: A device that can be used to manually open or close a circuit, and to automatically open a circuit at a predetermined level of over current without damage to itself. Related Links Circuit breaker - WikipediaHow Circuit Breakers Work | HowStuffWorksShop Circuit Breakers, Breaker Boxes & Fuses at Lowes.comCircuit Breaker - The - [Circuit Switchers](https://electricalschool.org/circuitswitchers/) - Circuit Switchers Definition: Circuit-Switchers are multipurpose switching and protection devices. Often used for switching and protection of transformers, single and back-to-back shunt capacitor banks, reactors, lines, and cables. They can close, carry, and interrupt fault currents a Related Links Definition of Circuit Switchers in Electric Power Generation, Transmission, and Distribution Terminology by U.S. Department of - [Circuit Voltage](https://electricalschool.org/circuitvoltage/) - Circuit Voltage Definition: The greatest root-mean-square (effective) difference of potential between any two conductors of the circuit. Related Links Voltage and Current in a Practical Circuit | Basic Concepts Of Electricity | Electronics TextbookBBC - Standard Grade Bitesize Physics - Useful circuits : Revision, Page 4Voltage, Current, Resistance, and Ohm's Law - learn.sparkfun.comOpen-circuit voltage - - [Circular-Mil (cmil)](https://electricalschool.org/circular-milcmil/) - Circular-Mil (cmil) Definition: The area of a circle with a diameter of one mil (1/1000 inch), used to describe the cross-sectional area of a conductor. One cmil equals approximately 0.0000008 square inches. Related Links Circular mil - WikipediaWhat is circular mil? - Definition from WhatIs.comCM - Circular Mil AreaAWG - American Wire Gauge and Circular - [CDMA](https://electricalschool.org/cdma/) - CDMA Definition: Code Division Multiple Access. CMDA is a technique used mainly with personal communications devices such as mobile phones that digitizes the conversation and tags it with a special frequency code. The data is then scattered across the frequency band. Related Links Code-division multiple access - WikipediaWhat is CDMA (Code-Division Multiple Access) ? - - [Cell-Reversal (Battery)](https://electricalschool.org/cell-reversalbattery/) - Cell-Reversal (Battery) Definition: Reversing of polarity within a cell of a multi-cell battery due to over discharge. Related Links Non-correctable Battery ProblemsEffects of Cell Reversal on Li-Ion BatteriesBattery Myth | Can a Battery ‘Reverse’ its Polarity?Rechargeable battery - WikipediaReversed polarity cell - Lead Acid Battery DesulfationReversed polarity 18650 cell. Related Videos How to protect circuits - [CH2H2](https://electricalschool.org/ch2h2/) - CH2H2 Definition: Acetylene Related Links Acetylene - WikipediaAcetylene | chemical compound | Britannica.comAcetylene | Define Acetylene at Dictionary.comObject moved Related Videos Let's Talk Oxy Acetylene View More Acetylene Tanks, What's In Em? View More Acetylene torch basics View More How to set the oxy acetylene regulators View More Acetylene Balloons! View More Victor Acetylene Safety - [CH4](https://electricalschool.org/ch4/) - CH4 Definition: Methane. Related Links Methane - WikipediaMethane | chemical compound | Britannica.comMethane: The other important greenhouse gas | Environmental Defense FundOverview of Greenhouse Gases | Greenhouse Gas (GHG) Emissions | US EPAMethane Budget[TITLE]Methane | UCAR Center for Science Educationmethane - WiktionaryMethane surge needs 'urgent attention' - BBC News Related Videos Fun with burning methane - [Characteristic Angle](https://electricalschool.org/characteristicangle/) - Characteristic Angle Definition: The angle between the vectors representing two of the energizing quantities applied to a relay used for the declaration of the performance. Related Links OSA | Hamilton’s Mixed and Angle Characteristic Functions and Diffraction Aberration TheoryIdentify angles using angle characteristics | LearnZillion[cond-mat/9607218] An extension of the characteristic angle method to the easy-plane - [Characteristic Curve](https://electricalschool.org/characteristiccurve/) - Characteristic Curve Definition: A plot or curve displaying the operating values of the characteristic quantities corresponding to various values or combinations of the energizing quantities. Related Links Characteristic curve - WikipediaCharacteristic Curve | Definition of Characteristic Curve by Merriam-WebsterCharacteristic curve definition and meaning | Collins English DictionaryCharacteristic curve | Define Characteristic curve at Dictionary.comcharacteristic curve - [Characteristic Impedance Ratio (C.I.R.)](https://electricalschool.org/characteristicimpedanceratiocir/) - Characteristic Impedance Ratio (C.I.R.) Definition: The maximum value of the system impedance ratio for which the relay performance remains within the prescribed limits of accuracy. Related Links Characteristic impedance - Wikipedia[TITLE][TITLE][TITLE][TITLE][TITLE] Related Videos What is Characteristic Impedance? View More characteristic impedance transmission line View More How to Calculate Characteristic Impedance View More Electro Magnetics - - [Charge (Battery)](https://electricalschool.org/chargebattery/) - Charge (Battery) Definition: The conversion of electrical energy from an external source, into chemical energy within a cell or battery. Related Links BU-1004: Charging an Electric Vehicle – Battery UniversityBattery chargers for electric vehicles - IEEE Journals & Magazine Related Videos Best Way To Charge A Dead Car Battery - how to hook up in - [Charge Controller](https://electricalschool.org/chargecontroller/) - Charge Controller Definition: An electronic device which regulates the voltage applied to a battery or battery bank. Related Links Charge controller - WikipediaSolar Charge Controller Basics Related Videos Review: 12V/24V 20A/30A PWM Solar Charge controllers /USB -cheap Chinese stuffs View More DIY Off Grid Solar- Choosing A Charge Controller MPPT vs. PWM View More MPPT - [Charge Rate (Battery)](https://electricalschool.org/chargeratebattery/) - Charge Rate (Battery) Definition: The rate at which current is applied to a secondary cell or battery to restore its capacity. Related Links Charles-Augustin de Coulomb's C-Rate for Batteries[TITLE] Related Videos Choosing the Proper Charge Rate for a Lipo Battery View More Venom LiPo Battery 101 - Why choose a LiPo How to determine charge - [Candlepower Distribution Curve](https://electricalschool.org/candlepowerdistributioncurve/) - Candlepower Distribution Curve Definition: A curve, generally polar, representing the variation of luminous intensity of a lamp or luminaire in a plane through the light center. Related Links 403 Forbiddenintensity (candlepower) distribution curve | IESCandlepower Distribution Curve|Girton ManufacturingCandlepower Distribution Curve - FMPedia Wiki - FMGlossary - IFMA CommunityHow to interpret a light distribution curve? | - [Capacitance](https://electricalschool.org/capacitance/) - Capacitance Definition: 1) The ratio of an impressed charge on a conductor to the corresponding change in potential. 2)The ratio of the charge on either conductor of a capacitor to the potential difference between the conductors. 3) The property of being able to collect a char Related Links Capacitance - WikipediaWhat is capacitance?Capacitance (video) | - [Capacitor bank](https://electricalschool.org/capacitorbank/) - Capacitor bank Definition: An assembly of capacitors and switching equipment, controls, etc., required for a complete operating installation. Related Links What is a capacitor bank and why is it used? - QuoraWhat is a Capacitor Bank?Capacitor Banks - ControllixCapacitor Bank | Reactive Power Compensation Related Videos Capacitor bank 11,3kJ 350V discharge test - Featured on - [Capacitor Voltage Transformer](https://electricalschool.org/capacitorvoltagetransformer/) - Capacitor Voltage Transformer Definition: A voltage transformer that uses capacitors to obtain a voltage divider effect. It is utilized at EHV voltages instead of an electromagnetic VT for cost and size purposes. Related Links Capacitor voltage transformer - WikipediaCapacitive Voltage Transformers (CVT) For HV Measurements | EEPWhat is the function of a capacitor voltage transformer? - [Capacity (Battery)](https://electricalschool.org/capacitybattery/) - Capacity (Battery) Definition: The quantity of electricity delivered by a battery under specific conditions, usually expressed in ampere-hours. Related Links Battery CapacityElectric battery - WikipediaPower Capacity and Power Capability | All About Batteries | Adafruit Learning SystemBattery Definitions – Battery University[TITLE] Related Videos Battery amp-hour, watt-hour and C rating tutorial View More Amp Hours? Battery - [Category 5 Cable](https://electricalschool.org/category5cable/) - Category 5 Cable Definition: Also known as "Cat 5", this cable is used for fast ethernet and telephone communications. The cable is constructed of 4 twisted pair of copper wire. Related Links Category 5 cable - WikipediaCAT 5, cat 5e, cat6, cat6a, cat7 Cable Standards | Cablek[TITLE] Related Videos What Ethernet Cable to Use? Cat5? - [Cathode](https://electricalschool.org/cathode/) - Cathode Definition: 1) The negative electrode, that emits electrons or gives off negative ions and toward which positive ions move or collect in a voltaic cell or other such device. 2) The negative pole of a battery. Related Links [TITLE]17.2 Galvanic Cells – ChemistryAnode Cathode + ou -?Galvanic cell vs. electrolytic cell | Student Doctor - [CB](https://electricalschool.org/cb/) - CB Definition: Circuit Breaker Related Links Circuit breaker - WikipediaHow Circuit Breakers Work | HowStuffWorksShop Circuit Breakers, Breaker Boxes & Fuses at Lowes.comCircuit Breaker - The Verge Related Videos How a Circuit Breaker Works in Slow Motion - Warped Perception - 4K View More How to Replace a Circuit Breaker By: Everything Home TV View - [Cable Pulling Lubricant](https://electricalschool.org/cablepullinglubricant/) - Cable Pulling Lubricant Definition: A chemical compound used to reduce pulling tension by lubricating a cable when pulled into a duct or conduit. Related Links Wattmaster Related Videos Hand Application of Polywater? Cable Pulling Lubricants View More Spray Lubricant for Electrical Wire and Cable Pulling View More Tradesman TV: Foam Wire Pulling Lubricant View More - [Cable Sheath](https://electricalschool.org/cablesheath/) - Cable Sheath Definition: The outermost covering of a cable providing overall protection Related Links Lead Sheath Cable, Lead Sheath Supplier, Lead Products ManufacturerCable Sheath Resistance Testing | Eland CablesThermoplastic-sheathed cable - Wikipediasheathed cable - Wiktionary Related Videos Sheathed cable Meaning View More CCG Cable Terminations E1EX-LS Cable Glands For Armoured Cables - Hazardous Area Glands - [Cable Tray](https://electricalschool.org/cabletray/) - Cable Tray Definition: A rigid structural system used to support cables and raceways. Types of cable trays include ladder, ventilated trough, ventilated channel, and solid bottom Related Links Cable tray - WikipediaFAQ - Cable Tray InstituteWhat Is A Cable Tray? – Brilltech Engineers – MediumUnderstanding cable traysType of Cable Tray | Electrical Notes & ArticlesCable - [CAIDI](https://electricalschool.org/caidi/) - CAIDI Definition: A distribution circuit reliability average interruption duration index. It represents the average time required to restore service to the average customer per sustained interruptions. Related Links CAIDI - WikipediaUsing CAIDI as a Leading Indicator - Electric Light & PowerThe Reliability Triangle | Transmission & Distribution World[TITLE][TITLE][TITLE] - [CAIFI](https://electricalschool.org/caifi/) - CAIFI Definition: The customer average interruption frequency index. It is designed to show trends in customers interrupted and helps to show the number of customers affected out of the whole customer base. Related Links CAIFI - WikipediaWhat is CAIFI? Webopedia DefinitionCAIFI - Customer Average Interruption Frequency Index | AcronymFinder - [Calibration](https://electricalschool.org/calibration/) - Calibration Definition: Adjustment of a device so the output is within a specified range for particular values of the input. Related Links What is calibration? - Electronic Calibration Definition | RS Calibration ServicesElectrical Calibration - Calibration of Electrical InstrumentsWHAT IS CALIBRATION AND WHY IS IT SO IMPORTANT | Tempcon; WHAT IS CALIBRATION AND WHY IS - [Calorie](https://electricalschool.org/calorie/) - Calorie Definition: A calorie is the energy required to raise one gram of water one degree Celsius at one atmosphere. The onset of second-degree burns may occur at 1.2 calories per centimeter squared per second. One calorie per centimeter squared per second per second can be Related Links Calorie | Definition of Calorie by Merriam-WebsterCalorie - [Candela (cd)](https://electricalschool.org/candelacd/) - Candela (cd) Definition: The standard unit for luminous intensity. One candela is equal to one lumen per steradian. Related Links Candela - WikipediaWhat is candela (cd)? - Definition from WhatIs.comWhat is candela (cd)? definition and meaning - BusinessDictionary.comLUMINOUS INTENSITY, UNIT CANDELA [CD]Base unit definitions: CandelaCandela vs Lux vs Lumens — 1000Bulbs.com Blog - [Candlepower](https://electricalschool.org/candlepower/) - Candlepower Definition: Luminous intensity expressed in candelas. Related Links Candlepower - WikipediaWhat is candlepower? definition and meaning - BusinessDictionary.comCandlepower | Definition of Candlepower by Merriam-WebsterCandlepower definition and meaning | Collins English DictionaryCandlepower | Define Candlepower at Dictionary.comcandlepower - Wiktionary - [Bulb Envelope](https://electricalschool.org/bulbenvelope/) - Bulb Envelope Definition: The outer enclosure of a light source; usually glass or quartz. Related Links Halogen lamp - Wikipedia Related Videos Bulb in valve type envelope View More Osram GLS lamp envelope size comparison View More Bulb in valve type envelope View More Osram GLS lamp envelope size comparison View More - [Bull Line](https://electricalschool.org/bullline/) - Bull Line Definition: Heavy line used to pull wire or cable into a conduit or into an overhead configuration. Related Links [TITLE][TITLE] Related Videos Conduit Minute Bull Line New View More Conduit Minute Bull Line View More Conduit Minute Bull Line New View More Conduit Minute Bull Line View More - [Bull Wheel](https://electricalschool.org/bullwheel/) - Bull Wheel Definition: A reel device used to hold tension during the wire installation process. Related Links Bullwheel - WikipediaBull Wheel | Definition of Bull Wheel by Merriam-Webster Related Videos Bull Wheel Reel, A Lift Operators Dream View More Lift Maintenance - Bullwheel Bearing Replacement | Liberty Mountain Resort View More Bull Wheel Sprocket Chain - [Bunched Stranding](https://electricalschool.org/bunchedstranding/) - Bunched Stranding Definition: A term applied to a number of wires twisted together in one direction in one operation without regard to their geometric arrangement. Related Links Types of Strand Construction | IEWC Technical Guide Related Videos YH 08T wire cable stranding twisting bunching machine View More POURTIER High Speed Concentric Stranding line View More - [BURD](https://electricalschool.org/burd/) - BURD Definition: Buried Urban Residential Distribution. Related Links Underground residential distribution - More hidden and reliableBURD - Buried Underground Residential Distribution (electrical utilities) | AcronymFinderIIS 8.5 Detailed Error - 406.0 - Not AcceptableNew aspect of buried urban telephone distribution - IEEE Journals & MagazinePower outages often spur questions around burying power lines - Today in - [Burden](https://electricalschool.org/burden/) - Burden Definition: Load imposed by an electronic or electrical device on the measured input circuit, expressed in volt-amps. Related Links Burden voltagetransformer - How is burden measured? - Electrical Engineering Stack ExchangeWhat is burden in potential transformer? - QuoraCurrent transformer - Wikipedia Related Videos types of current transformer and burden in current transformer error in - [Buried Urban Residential Distribution](https://electricalschool.org/buriedurbanresidentialdistribution/) - Buried Urban Residential Distribution Definition: Refers to the system of electric utility equipment installed below grade. Related Links Residential Underground Lines ConstructionPower outages often spur questions around burying power lines - Today in Energy - U.S. Energy Information Administration (EIA)Sustainability | Free Full-Text | Investigating How the Rents of Small Urban Houses are Determined: Using - [Bushing](https://electricalschool.org/bushing/) - Bushing Definition: An insulator having a conductor through it, used to connect equipment to a power source. Related Links Bushing (electrical) - WikipediaElectrical Bushings - Types, Purpose and Construction | StudyElectrical | Online Electrical Engineering Study SiteElectrical Bushing - Open Electrical Related Videos Bushing (electrical) View More Bushing (electrical) View More What does "high-voltage bushing" - [C2H4](https://electricalschool.org/c2h4/) - C2H4 Definition: Ethylene. Related Links Ethylene - WikipediaEthylene | chemical compound | Britannica.comethylene - WiktionaryEthylene | Define Ethylene at Dictionary.comethylene | Definition of ethylene in English by Oxford DictionariesEthylene Related Videos Ethylene production View More Ethylene View More How to Make Ethene (Ethylene) - Catalytic Dehydration of Ethanol View More Production of Ethylene View More - [C2H6](https://electricalschool.org/c2h6/) - C2H6 Definition: Ethane. Related Links Ethane - WikipediaEthane | chemical compound | Britannica.comEthane | CH3CH3 - PubChemEthane | Define Ethane at Dictionary.comEthane: A Protection Architecture for Enterprise Networks Related Videos Conformations of ethane | Organic chemistry | Khan Academy View More Ethane View More Molecular Structure of Ethane View More Ethane and Methane Experiment View - [Biased Relay](https://electricalschool.org/biasedrelay/) - Biased Relay Definition: A relay in which the characteristics are modified by the introduction of some quantity, and which is usually in opposition to the actuating quantity. Related Links biased relay - definition - English3.1 Types of RelaysHow Relays Work[TITLE]Estimation of Process Dynamics using Biased Relay Feedback Approach - ScienceDirect Related Videos Differential Relay | - [Blowing](https://electricalschool.org/blowing/) - Blowing Definition: The act of installing fiber optic cable into a duct using air pressure. Related Links What Is “Blown Fiber” Installation? | CommScope[TITLE]Air Blown Fiber Optic Cabling Solutions[TITLE] Related Videos Alltec Fibre Ltd Blowing 144 Fibre Cable View More Cable Blowing View More A 5,7mm fiber cable installed by fiberblowing View More Larson Cable - [Bluetooth](https://electricalschool.org/bluetooth/) - Bluetooth Definition: A wireless computing and telecommunications specification that defines how mobile personal computing devices work with each other and with regular computers and phone systems within a close range. Related Links Bluetooth - Wikipedia Related Videos Bluetooth Explained | All you need to know! View More Bluetooth Basics: What is Bluetooth? View More Bluetooth - [Boost Charge](https://electricalschool.org/boostcharge/) - Boost Charge Definition: A charge applied to a battery which is already near a state of full charge, usually of short duration. Related Links Float and Boost Charging of BatteriesWhat is the difference between floating charger and boosting charger? - QuoraAndroid Charging Boost Removal (June 2018 Update) - Virus RemovalHow do I get the Charge - [Booster Transformer](https://electricalschool.org/boostertransformer/) - Booster Transformer Definition: A current transformer whose primary winding is in series with the catenary and secondary winding in the return conductor of a classically-fed A.C. overhead electrified railway. Related Links What is Booster Transformer? Definition & Explanation - Circuit GlobeWhat is the booster transformer? - QuoraBooster Transformer - Electrical ideaBuck–boost transformer - Wikipedia Related - [Breakdown Voltage](https://electricalschool.org/breakdownvoltage/) - Breakdown Voltage Definition: The voltage at which a dielectric material fails. Related Links Breakdown voltage - WikipediaWhat is breakdown voltage? - Quora Related Videos What is BREAKDOWN VOLTAGE? View More 8.02x - Lect 6 - High-voltage Breakdown, Lightning, Sparks, St-Elmo's Fire View More Breakdown in diodes_Lecture6 View More Avalanche Breakdown View More Breakdown voltage - - [Brownout](https://electricalschool.org/brownout/) - Brownout Definition: Refers to a reduction of voltage on the system. This dims the lights as a means of conserving energy. Related Links Brownout (electricity) - WikipediaBrownout | Define Brownout at Dictionary.comWhat is a Brownout?Brownout - definition of brownout by The Free Dictionary[TITLE] Related Videos Brownout & power failure caught on video View More Brownout - [Buck](https://electricalschool.org/buck/) - Buck Definition: The act of lowering the voltage. Related Links Buck converter - WikipediaBuck ConvertersStep Down Buck Regulator | DC-DC Converter | Tutorial Related Videos Fundamentals of Power Electronics - Buck Converter Basics View More Switch mode power supply tutorial: DC-DC buck converters View More Boost Converters and Buck Converters: Power Electronics View More DIY - [Basic impulse level (BIL)](https://electricalschool.org/basicimpulselevelbil/) - Basic impulse level (BIL) Definition: A reference impulse (voltage) insulation strength expressed in terms of the peak value of the withstand voltage of a standard impulse voltage wave. It is used to express the ability of electrical equipment such as transformers to withstand certain levels Related Links What is BIL and how does it apply - [Basic Insulation Level](https://electricalschool.org/basicinsulationlevel/) - Basic Insulation Level Definition: A design voltage level for electrical apparatus that refers to a short duration (1.2 x 50 microsecond) crest voltage and is used to measure the ability of an insulation system to withstand high surge voltage. Related Links BIL or Basic Insulation Level Definition Table and CalculationWhat Is The Basic Insulation Level - [Battery Cell](https://electricalschool.org/batterycell/) - Battery Cell Definition: An electrochemical device composed of positive and negative plates, separator, and electrolyte which is capable of storing electrical energy. Related Links Electric battery - WikipediaTypes of Battery Cells; Cylindrical Cell, Button Cell, Pouch CellClassification of Cells or Batteries Related Videos How batteries work - Adam Jacobson View More Tesla's new 2170 battery - [Battery Tray](https://electricalschool.org/batterytray/) - Battery Tray Definition: A contained unit with a base and walls for holding several cells or batteries. Related Videos BOV - Fabricating battery tray View More How to Make a Custom Battery Tray with the Box & Pan Brake - Eastwood View More Polaris Slingshot Optima Battery Tray Install by Slingmods! View More Cherokee XJ - [Bay-O-Net](https://electricalschool.org/bay-o-net/) - Bay-O-Net Definition: A fusing device frequently used to protect transformers and downstream devices. A Bay-O-Net fuse may include a Partial Range Current Limiting Fuse in series with n under oil fuse link. - [Beacon](https://electricalschool.org/beacon/) - Beacon Definition: In wireless networking, a beacon is a packet sent by a connected device to inform other devices of its presence and readiness. Related Links Why Beacon is the next big thing in wirelessWireless location beacons are now the size of stickers - The VergeBeacon frame - WikipediaLearn about cache typesBeacon Line Array with - [Beam Spread](https://electricalschool.org/beamspread/) - Beam Spread Definition: With regard to outdoor light, the angle between the two directions in a plane in which the intensity is equal to a stated percentage of the maximum beam intensity. The percentage is typically 10% for floodlights and 50% for roadway luminaries. Related Links What is beam spread?Pocket Guide: Beam Spread - Flip - [Autonomous Photovoltaic System](https://electricalschool.org/autonomousphotovoltaicsystem/) - Autonomous Photovoltaic System Definition: A stand-alone Photovoltaic system that has no back-up generating source. The system may or may not include storage batteries. Most battery systems are designed for a certain minimum number of days or operation before recharging is needed should sufficie Related Links Stand-alone power system - WikipediaAutonomous Photovoltaic Systems - GESOLAR CyprusAutonomous - [Auxiliary Power](https://electricalschool.org/auxiliarypower/) - Auxiliary Power Definition: The power required for correct operation of an electrical or electronic device, supplied via an external auxiliary power source rather than the line being measured. Related Links Auxiliary power - WikipediaAuxiliary power | Memory Alpha | FANDOM powered by WikiaAuxiliary Power | WARFRAME Wiki | FANDOM powered by WikiaAuxiliary power unit - - [Auxiliary Relay](https://electricalschool.org/auxiliaryrelay/) - Auxiliary Relay Definition: An all-or-nothing relay energized via another relay. An example is a measuring relay, for the purpose of providing higher rated contacts, or introducing a time delay, or providing multiple outputs from a single input. Related Links [TITLE][TITLE][TITLE] Related Videos How a relay works View More What is a Relay? How does a - [AWG](https://electricalschool.org/awg/) - AWG Definition: American Wire Gauge. Related Links American wire gauge - WikipediaAmerican Wire Gauge (AWG) Cable Conductor Size Chart / TableWhat is AWG American Wire Gauge? SWGWire Gauge Sizes | AWG Wire GaugesWire Gauge Sizes and the American Wire Gauge (AWG) | Learning Center | Sonic ElectronixWire Gauge Standards | Cable Gauge | American Wire - [Azimuth](https://electricalschool.org/azimuth/) - Azimuth Definition: The angle between true north and the projection of a surface normal to the horizontal plane, measured clockwise from the north. As applied to a Photovoltaic array, 180 degrees azimuth means the array faces south. Related Links Azimuth - WikipediaUnderstanding Azimuth and Elevation | PhotoPillsDefinition of "azimuth"What are the "azimuth and elevation" of - [Balanced Load](https://electricalschool.org/balancedload/) - Balanced Load Definition: Refers to an equal loading on each of the three phases of a three phase system... Related Links Load balancing (electrical power) - WikipediaBalancing Unbalanced Electrical Power LoadsReactive power compensation and load balancing in electric power distribution systems - ScienceDirect Related Videos Electrical Pannel Phasing and Balancing Loads View More How unbalanced - [Balanced polyphase system](https://electricalschool.org/balancedpolyphasesystem/) - Balanced polyphase system Definition: A polyphase system in which both the currents and voltages are symmetrical. Related Links Polyphase system - WikipediaBalanced Unbalanced Polyphase Systems 1 23 13 | Ac Power | Electronic Engineering[TITLE]Polyphase Power Systems | AC Electric Circuits Worksheets[TITLE]Initial Tesla Polyphase / "Three-Phase" Alternating-Current Systems and Metering Development - Engineering and Technology History - [Bandwidth](https://electricalschool.org/bandwidth/) - Bandwidth Definition: The data carrying capacity of a transmission path, measured in bits or bytes per second. Related Links How to Monitor Your Internet Bandwidth Usage in macOS Related Videos What is bandwidth? View More Internet Bandwidth Explained - Tech Talk View More BANDWIDTH OF SIGNAL View More Speed vs Bandwidth Explained - Arvig View - [Arc Flash](https://electricalschool.org/arcflash/) - Arc Flash Definition: An arcing fault is the flow of current through the air between phase conductors or phase and neutral or ground. An arcing fault can release tremendous amounts of concentrated radiant energy at the point of the arcing in a small fraction of a second result Related Links Arc flash - WikipediaArc Flash - [Arc Thermal Performance Value](https://electricalschool.org/arcthermalperformancevalue/) - Arc Thermal Performance Value Definition: Maximum capability for arc flash protection of a particular garment or fabric measured in calories per square centimeter. Though both garments and fabrics can be used for protection a garment made from more than one layer of arc flash rated fabric will ha Related Links Arc Thermal Performance Value | - [Arcing Time](https://electricalschool.org/arcingtime/) - Arcing Time Definition: The time between instant of separation of the CB contacts and the instant of arc excitation. Related Links Arcing time | Article about arcing time by The Free DictionaryI²t Curves and Operating Times for Fuses | PowerGuru - Power Electronics Information PortalIEC 60050 - International Electrotechnical Vocabulary - Details for IEV number - [Arrester](https://electricalschool.org/arrester/) - Arrester Definition: Short for Surge Arrester, a device that limits surge voltage by diverting it. Related Links Surge arrester - WikipediaHow Surge Arrester WorksHow Does a Surge Arrester Work? | DoItYourself.com[TITLE][TITLE]Surge arresters | ABB Related Videos What is a Lightning Arrester View More How Its Made - 1364 Surge Arresters View More FAQs about Surge - [Askeral](https://electricalschool.org/askeral/) - Askeral Definition: A generic term for a group of synthetic, fire-resistant, chlorinated aromatic hydrocarbons used as electrical insulated fluids. Related Links Askeral|Girton ManufacturingMeaning of Askeralaskeral – Termwiki, millions of terms defined by people like youGlossary of Electrical Terms - [ASTM](https://electricalschool.org/astm/) - ASTM Definition: American Society for Testing and Materials. ASTM is located at 1916 Race Street, Philadelphia, PA 19103. Related Links About Us | www.astm.orgAmerican Society For Testing And Materials International: Private Company Information - BloombergAmerican Society for Testing and Materials (ASTM) | IRMI.comWhat is American Society for Testing And Materials (ASTM)? definition and meaning - - [ATC](https://electricalschool.org/atc/) - ATC Definition: Available Transfer Capacity Related Links ERROR: The request could not be satisfiedAvailable transfer capacity evaluation through evolutionary algorithms - IEEE Conference PublicationAvailable transfer capability assessment using evolutionary programming based capacity benefit margin - ScienceDirect[TITLE]406 - Client browser does not accept the MIME type of the requested page. Related Videos Available Transfer Capability (ATC) - [ATP](https://electricalschool.org/atp/) - ATP Definition: Alternative Transient Program Related Links [TITLE]ATP (Alternate Transients Program) | SPDCAlternative Transients Program[TITLE]Emtp - Wikipedia Related Videos ElectroMagnetic Transient Program EMTP View More ElectroMagnetic Transient Program EMTP View More - [Automatic line sectionalizer](https://electricalschool.org/automaticlinesectionalizer/) - Automatic line sectionalizer Definition: A self-contained circuit-opening device that automatically opens the main electrical circuit after sensing and responding to a predetermined number of successive main current impulses. Related Links Recloser - WikipediaFundamentals of Electricity - Sectionalizers406 - Client browser does not accept the MIME type of the requested page. Related Videos Autoreclosure And Sectionalizer - [Automatic Recloser](https://electricalschool.org/automaticrecloser/) - Automatic Recloser Definition: An automatic switch used to open then reclose following an over current event on a distribution voltage (medium voltage) line. Related Links Recloser - Wikipedia[TITLE][TITLE]Automatic Circuit Reclosers 15.5 - 27 kV Related Videos NOJA Power OSM Recloser Installation Training Video View More How to Change Out a Recloser View More Autoreclosure And - [Ampere-hour capacity (storage battery)](https://electricalschool.org/ampere-hourcapacitystoragebattery/) - Ampere-hour capacity (storage battery) Definition: The number of ampere-hours that can be delivered under specified conditions of temperature, rate of discharge, and final voltage. Related Links Battery CapacityBattery Ratings | Batteries And Power Systems | Electronics TextbookBattery CapacityBatteriesCharles-Augustin de Coulomb's C-Rate for Batteries Related Videos simple formula to calculate batteries requied View More How Many - [Ampere-hour meter](https://electricalschool.org/ampere-hourmeter/) - Ampere-hour meter Definition: An electric meter that measures and registers the integral, with respect to time, of the current of a circuit in which it is connected. Related Links Ampere Hour Meters | CountronicsConsent Form | Cruising World Related Videos Amp Hours? Battery Capacity Explained View More watt hour meter calibration standard ge Ib-10 View - [Anneal](https://electricalschool.org/anneal/) - Anneal Definition: The process of controlled heating and cooling of a metal. In wire and cable products, copper and aluminum are annealed to increase flexibility while maintaining adequate strength. Related Links Anneal | Definition of Anneal by Merriam-Websteranneal | Definition of anneal in English by Oxford DictionariesAnneal - definition of anneal by The Free DictionaryAnnealing - [Anode](https://electricalschool.org/anode/) - Anode Definition: 1) The positive electrode that emits positive ions and attracts negative ions, within a voltaic cell or other such device. 2) The positive pole of a battery. Related Links Anode - Wikipedia[TITLE]Solved: Anode+ Cathode Fig.6 1N4148 Diode The Following Da... | Chegg.comProtecting hot water tanks from corrosionDefinition of auxiliary anode - mindat.org glossary - [ANSI](https://electricalschool.org/ansi/) - ANSI Definition: American National Standards Institute. ANSI is located at 1430 Broadway, New York, NY 10018. Related Links Introduction to ANSIAmerican National Standards Institute - Wikipedia Related Videos ANSI History View More Introduction to Standards: American National Standards Institute (ANSI) View More What is ANSI? View More What is ANSI? View More Everything you wanted - [Antenna Gain](https://electricalschool.org/antennagain/) - Antenna Gain Definition: An antenna's transmission power, provided as a ratio of its output (send) signal strength to its input (receive) signal strength, normally expressed in dBi. The higher the dBi, the stronger the antenna. Related Links Antenna GainAntenna gain - WikipediaWhat is Antenna Gain?What Does Antenna Gain Mean?What Is Antenna Gain? And What are - [Anti-Pumping Device](https://electricalschool.org/anti-pumpingdevice/) - Anti-Pumping Device Definition: A feature incorporated in a Circuit Breaker or re-closing scheme to prevent repeated operation where the closing impulse lasts longer than the sum of the relay and CB operating times. Related Links Anti Pumping And Lockout RelaysAnti Pumping Relay in Circuit Breaker | Electrical ConceptsWhat is meant by Anti-pumping function in closing - [AR](https://electricalschool.org/ar/) - AR Definition: Automatic Recloser. Related Links Recloser - WikipediaViper-S® Solid Dielectric, Three Phase Reclosers | G&W ElectricReclosers - Apparatus | ABBAutomatic Circuit Reclosers 15.5 - 27 kV Related Videos Basics of Recloser Testing View More How to Test Reclosers using Flexitest Switches View More MCB Automatic Recloser View More Circuit breaker auto-reclosure View More NOJA - [Arc](https://electricalschool.org/arc/) - Arc Definition: A discharge of electricity through air or a gas. Related Links Arc+ Welding SimulationElectrode Consumption Simulation for... (PDF Download Available)[TITLE] Related Videos electric arc View More How To Make An Electrical Arc Furnace View More Electrical Arc Flash Demonstration View More Electric Arc lighters - How good are they? View More Electric Arc - [Alley Arm](https://electricalschool.org/alleyarm/) - Alley Arm Definition: A side brace for a cross arm that is not loaded (balanced) evenly. Related Links Alley Arm Definition - Electrician's Slang Related Videos Lineman alley arm removal View More lineman hanging double arm View More 2014 Lineworkers Rodeo: The Throwback Kid View More Lineman alley arm removal View More lineman hanging double - [All-or-Nothing Relay](https://electricalschool.org/all-or-nothingrelay/) - All-or-Nothing Relay Definition: An electrical relay which is intended to be energized by a quantity, whose value is either higher than that at which it picks up or lower than that at which it drops out. Related Links [TITLE][TITLE]Meaning of all-or-nothing relay[TITLE] Related Videos How To Add Relays to Your Projects- The BASICS View More - [Alternating Current](https://electricalschool.org/alternatingcurrent/) - Alternating Current Definition: An electric current that reverses direction at regular intervals, having a magnitude that varies continuously in a sinusoidal manner. Related Links Alternating current - WikipediaWhat is Alternating Current (AC)? | Basic AC Theory | Electronics TextbookAlternating Current (AC) vs. Direct Current (DC) - learn.sparkfun.comAlternating Current Related Videos AC vs. DC View More - [Ambient Temperature](https://electricalschool.org/ambienttemperature/) - Ambient Temperature Definition: The temperature surrounding an object. Related Links | Define at Dictionary.comWhat is ambient temperature? - Definition from WhatIs.comWhat is Ambient Temperature? - Definition from TechopediaAmbient Temperature: Definition & Range | Study.comambient temperature | Definition of ambient temperature in English by Oxford DictionariesAmbient Temperature Definition (Weather) Related Videos Condenser Ambient Temperature View More - [American Wire Gage (AWG)](https://electricalschool.org/americanwiregageawg/) - American Wire Gage (AWG) Definition: A standard system used in the United States for designating the size of an electrical conductor based on a geometric progression between two conductor sizes. Related Links American wire gauge - WikipediaAmerican Wire Gauge (AWG) Cable Conductor Size Chart / TableWhat is American Wire Gauge (AWG)? - Definition from WhatIs.comWhat - [Amorphous Semiconductor](https://electricalschool.org/amorphoussemiconductor/) - Amorphous Semiconductor Definition: A non-crystalline semiconductor material used in photovoltaic panel construction. It is easier and less costly to manufacture than crystalline, but is less efficient and degrades over time. It is also known as thin film. Related Links IIS 8.5 Detailed Error - 406.0 - Not Acceptable10.7 Amorphous semiconductors - Chemistry LibreTextsAmorphous semiconductor | - [Ampacity](https://electricalschool.org/ampacity/) - Ampacity Definition: The current in amperes that a conductor can carry continuously under given conditions of use without exceeding its temperature rating. Related Links Ampacity - Wikipedia Related Videos Conductor Ampacity Correction and Adjustment, NEC 2014 - 310.15. (42min:03sec) View More What is AMPACITY? View More How to Use Table 310.15(B)(16) to Calculate Ampacity View - [Ampere-Hour](https://electricalschool.org/ampere-hour/) - Ampere-Hour Definition: The use of one Ampere for one hour. Related Links What is ampere hour (Ah or amp hour)? - Definition from WhatIs.comAmpere hour - WikipediaAmp Hour Tutorial - Explaining The Specification | All About Lead Acid BatteriesAmpere hour - Energy EducationWhat Is An Ampere Hour Rating (Amp Hour or Ah) Of A Battery? - [Aeolian Vibration](https://electricalschool.org/aeolianvibration/) - Aeolian Vibration Definition: A natural forced vibration caused by wind flowing over a conductor. This occurs at alternate wind induced vortices and at wind speeds typically at 8 to 12 MPH. Contact Young & Company for additional information including the formula to calculate Aeolian Related Links [TITLE][TITLE][TITLE][TITLE]Aeolian Vibration Testing-An Example Related Videos Galloping Power Lines?Redonda - [Aerial Cable](https://electricalschool.org/aerialcable/) - Aerial Cable Definition: An assembly of insulated conductors installed on a pole or similar overhead structures. It may be self supporting or attached to a messenger cable. Related Links The mechanics of aerial fiber cable Related Videos Jameson Aerial Buddy Installing ADSS Fiber Optic Cable View More How to terminate a coaxial cable into a - [AFCI](https://electricalschool.org/afci/) - AFCI Definition: Arc Fault Circuit Interrupter Related Links Arc-fault circuit interrupter - WikipediaWhat is an AFCI | AFCI SafetyFix a Sensitive Arc Fault Circuit Breaker | Family Handyman Related Videos Arc Fault Circuit Interrupter Outlets with Weekend Workbench and Leviton View More Nuisance tripping with Arc Fault Circuit Interrupter Breakers (AFCI) View More AFCI testing - [AFI](https://electricalschool.org/afi/) - AFI Definition: Arc Fault Interrupter Related Links What is an AFCI | AFCI Safety[TITLE]Fix a Sensitive Arc Fault Circuit Breaker | Family Handyman Related Videos Arc Fault Circuit Interrupter View More Arc-Fault Breakers on New Service Panel View More Fire Safety at Home: Arc Fault Circuit Interrupters View More The difference between a circuit breaker - [A-H](https://electricalschool.org/a-h/) - A-H Definition: Ampere-Hour Related Links What is ampere hour (Ah or amp hour)? - Definition from WhatIs.comAmpere hour - WikipediaAmp Hour Tutorial - Explaining The Specification | All About Lead Acid BatteriesAmpere hour - Energy EducationWhat Is An Ampere Hour Rating (Amp Hour or Ah) Of A Battery? - UPS Battery Center Related Videos Battery - [AIC](https://electricalschool.org/aic/) - AIC Definition: Arc Interrupting Current Related Links Breaking capacity - Wikipedia[TITLE]Arc Interruption Theory[TITLE]Your access to this site has been limitedPhysics of Electrical Current Interruption[TITLE]Marking Available Fault Current | IAEI Magazine[TITLE][TITLE] Related Videos Arc Fault Detection Device, Circuit Protection | Eaton View More Interrupt Rating: Safely Interrupting Electrical Current - A GalcoTV Tech Tip View More - [Air Blast Breakers](https://electricalschool.org/airblastbreakers/) - Air Blast Breakers Definition: A variety of high voltage circuit breakers that use a blast of compressed air to blow-out the arc when the contacts open. Normally, such breakers only were built for transmission class circuit breakers. Related Links What is Air Blast Circuit Breaker? Principle of Arc extinction & Types of Air Blast Circuit - [AIS](https://electricalschool.org/ais/) - AIS Definition: Air Insulated Switchgear Related Links Switchgear - Wikipedia5 Differences Between Air-Insulated Substations and Gas-Insulated SubstationsAir Insulated Switchgear - Medium Voltage - Switchgear | ABBSubstations with Air-Insulated Switchgear (AIS Substations) - Siemens Related Videos 04 MV Air Insulating Switchgear (AIS) View More High-voltage air-insulated switchgear - premium quality from Siemens View More ABB Gas - [ACSR](https://electricalschool.org/acsr/) - ACSR Definition: Aluminum Conductor Steel Reinforced. Related Links Aluminium-conductor steel-reinforced cable - Wikipedia Related Videos Aluminium Conductor Steel Reinforced(ACSR) by Anish Industrial Corporation, Kolkata View More Havells Cables and Wires Manufacturing Plant Video 2015 View More Wire Manufacturing View More Copper vs Aluminum Wires View More Conductor/Connector Sensor Installation Animation View More Insulator -Types of - [ACSR/AW](https://electricalschool.org/acsraw/) - ACSR/AW Definition: Aluminum Conductor, Aluminum Clad Steel Reinforced. Related Links ACSR/AS (Aluminium Conductor Aluminium Clad Steel Reinforced) | Midal Cables Related Videos Recycling of ACSR cable (Aluminum conductor steel-reinforced cable) View More ACSR-ALUMINUM CONDUCTOR STEEL REINFORCED View More Recycling of ACSR cable (aluminum conductor steel-reinforced cable) View More ACS WIRE MAKING EQUIPMENT(ALUMINIUM CLAD STEEL WIRE - [ACSR/TW](https://electricalschool.org/acsrtw/) - ACSR/TW Definition: ACSR conductor made using Trapezoidal Wire construction. Related Links Aluminium-conductor steel-reinforced cable - WikipediaTransmission Conductors - A Review of the Design and Selection Criteria[TITLE]Composite-cored conductors: Holding the line : CompositesWorld Related Videos Utility Wire Sizes View More ACSR ALUMINUM CONDUCTOR STEEL REINFORCED View More series talk 1: ACSR_Aluminium conductor steel reinforced View More - [ACSS](https://electricalschool.org/acss/) - ACSS Definition: Aluminum Conductor Steel Supported. This is a conductor that is generally used for overhead transmission construction. ACSS is often preferred over ACSR because of its superior sag characteristics. Related Links ACSS (Aluminium Conductor Steel Supported ) | Midal Cables Related Videos ALLOY TOP TIE Video A.P. - Hand Application View More ACSR AW - [ACSS/AW](https://electricalschool.org/acssaw/) - ACSS/AW Definition: Aluminum Conductor, Aluminum Clad Steel Supported. Related Links Specification for ACSSACSS/AS (Aluminum Conductors–Aluminum Clad Steel supported) | Midal Cables Related Videos ACS WIRE MAKING EQUIPMENT(ALUMINIUM CLAD STEEL WIRE EXTRUSION LINE) View More ACSR chopping machine CP 826AW WhatsApp/Viber/Line/WeChat/Kakaotalk +82 10 3198 5119 View More ACS(aluminum cladding steel) wire drawing machine View More Stripping - [ACSS/TW](https://electricalschool.org/acsstw/) - ACSS/TW Definition: ACSS conductor made using Trapezoidal Wire construction. Related Links Aluminium-conductor steel-reinforced cable - WikipediaTransmission Conductors - A Review of the Design and Selection Criteria[TITLE] Related Videos Utility Wire Sizes View More POURTIER High Speed Concentric Stranding line View More Power conductors factory Hardiwar View More ACSR ALUMINUM CONDUCTOR STEEL REINFORCED View More PMI - [Active Material (Battery)](https://electricalschool.org/activematerialbattery/) - Active Material (Battery) Definition: Material which reacts chemically to produce electrical energy when the cell discharges. The material returns to its original state during the charging process. Related Links Battery Components, Active Materials for | SpringerLinkLead Acid Battery Active Materials - Engineers EdgeGlossary of Battery Terms | Autobatteries.com | Johnson ControlsPositive active-materials for lead–acid battery - [Active Power](https://electricalschool.org/activepower/) - Active Power Definition: A term used for power when it is necessary to distinguish among Apparent Power, Complex Power and its components, and Active and Reactive Power. Related Links Active, Reactive, Apparent and Complex Power. Explanation & FormulasActive and reactive power control of the doubly fed induction generator based on wind energy conversion system - - [Adjustment](https://electricalschool.org/adjustment/) - Adjustment Definition: The operation intended to bring a transducer into a state of performance suitable for its use. Related Links Transducer Installation Placement RULES-Transducer Location-Transducer Mount-High speed-Side Scan-Down Scan-Side Imaging-Structure ScanKeep Your Pressure Transducer In Spec With Zero And Span Adjustments | APGBe smart when installing transducerHow to Calibrate a Current to Pressure Transducer ~ - [Admittance](https://electricalschool.org/admittance/) - Admittance Definition: The reciprocal of Impedance (1/Z). Related Links [TITLE]Admittance - WikipediaDefinition of Converting Admittance To Impedance | Chegg.com[TITLE]Impedance and Admittance Formulas for RLC Combinations - RF CafeHow does the conversion between admittance and impedance affect phase angle? - Electrical Engineering Stack ExchangeSolving Overhead Conductor Impedance and AdmittanceReactance Vs. Susceptance And Impedance Vs. Admittance - - [ADSL](https://electricalschool.org/adsl/) - ADSL Definition: Asymmetric Digital Subscriber Line. ADSL uses standard phone lines to provide high speed data communications. ADSL upstream speeds (from the user) normally top out at 128Kbps and downstream (to the user) at no more than 1.5Mbps. A separate phone line i Related Links Asymmetric digital subscriber line - WikipediaWhat is ADSL (Asymmetric Digital - [AAAC](https://electricalschool.org/aaac/) - AAAC Definition: All Aluminum Alloy Conductor Related Links AAC and AAAC (All Aluminium and All Aluminium Alloy Conductor) - Aluminium and Aluminium alloy Conductors | De Angeli Prodotti Related Videos Utility Wire Sizes View More Advantages Of Bundled Conductor View More High voltage cable plant : POURTIER stranding line View More ACSR Transmission Deadend Installation - [AAC](https://electricalschool.org/aac/) - AAC Definition: All Aluminum Conductor. Related Links Analysis of all aluminum conductor (AAC) and all aluminum alloy conductor (AAAC) - IEEE Conference Publication Related Videos AAAC Conductor, All Aluminum Alloy Conductor View More ACSR AW ALUMINUM CONDUCTOR STEEL REINFORCED AW CORE View More Copper vs Aluminum Wires View More Aluminum Wiring Dangers: a Burned Outlet - [AAC/TW](https://electricalschool.org/aactw/) - AAC/TW Definition: All Aluminum Conductor, Trapezoidal-Shaped Aluminum Strands. Related Links [TITLE]ACSS/TW Aluminum Conductor Steel Supported Trapezoidal Shaped Aluminum Strands On American Wire GroupAll Aluminum Conductor/Trapezoidal Wire(AAC/TW) Related Videos Manufacturer of Conductors- AAC, AAAC, ACSR, Al59, Aluminium & Alloy Wire Rod, Aerial Bunched Cables View More aluminum wire separator recycling View More Conductor, ACSR, Skin effect. - [Absorbed Glass Mat](https://electricalschool.org/absorbedglassmat/) - Absorbed Glass Mat Definition: Absorbed Glass Mat, also known as AGM, is a newer type of battery construction that uses saturated absorbent glass mats rather than gelled or liquid electrolyte. It is somewhat more expensive than flooded (liquid) type, but offers good reliability and fa Related Links Absorbent Glass Mat (AGM) Battery Information - Battery - [ACAR](https://electricalschool.org/acar/) - ACAR Definition: All Aluminum Conductor, Aluminum Alloy Reinforced. Related Links Aluminium-conductor steel-reinforced cable - WikipediaACAR (Aluminium Conductor Alloy Reinforced ) | Midal CablesACAR Aluminum Conductor Aluminum-Alloy Reinforced On American Wire Group Related Videos Utility Wire Sizes View More Conductor/Connector Sensor Installation Animation View More 3M? ACCR -- Installing a Compression Splice View More Heat Shrink - [ACB](https://electricalschool.org/acb/) - ACB Definition: Air Circuit Breaker Related Links Air Circuit Breaker: Construction, Operation, Types and UsesAir Circuit Breaker working, different types of ACBs and its applicationsAir Circuit Breaker Air Blast Circuit Breaker Related Videos Air circuit breaker operating mechanism introduction and how operate work View More What is Air Circuit Breaker (ACB) in Electrical? View More - [Access Point](https://electricalschool.org/accesspoint/) - Access Point Definition: A wireless networked device usually connected to a wireless LAN used to access the wired LAN. Related Links Wireless access point - WikipediaWhat is an Access Point and How is it Different from a Range Extender? Related Videos Open Mesh: WiFi Access Point for your Home or Small Business View More Alex's - [Accuracy Class](https://electricalschool.org/accuracyclass/) - Accuracy Class Definition: A number used to indicate the accuracy range of a measurement transducer, according to the defined standard. Related Links Accuracy class - Wikipedia[TITLE]Accuracy Class | HBMElectricity metering accuracy explainedWhat is the difference in accuracy class 1 and accuracy class 0.5 on a kwh metre? - Quora Related Videos Accuracy and Precision : - [100BaseT](https://electricalschool.org/100baset/) - 100BaseT Definition: A synonym for the Fast Ethernet network standard. The "100" refers to a maximum data-transfer rate of 100 megabits per second over twisted pair, copper wire. Related Links Ethernet 100BaseTX and 10BaseT Cables: Guidelines and Specifications - CiscoEthernet over twisted pair - Wikipedia100BaseX Ethernet Standard[TITLE] Related Videos CompTIA Network+ Certification [License to Tech] - [10BaseT](https://electricalschool.org/10baset/) - 10BaseT Definition: A synonym for the Fast Ethernet network standard. The "10" refers to a maximum data-transfer rate of 10 megabits per second over twisted pair, copper wire. Related Links 10BaseT Standard10BaseT in The Network EncyclopediaEthernet 100BaseTX and 10BaseT Cables: Guidelines and Specifications - Cisco10BaseT - 100BaseT and other RJ-45 a TutorialEthernet over twisted pair - [600V-UD](https://electricalschool.org/600v-ud/) - 600V-UD Definition: 600 Volt Underground Distribution Cable. Related Links URD Cable / Wire – Nassau Electrical Related Videos Underground Residential Distribution Systems [PREVIEW] View More Typical Faults on Distribution Lines View More Underground Splice View More Aluminum Medium Voltage Cable View More PowerGlide? 600V UD View More Underground Residential Distribution Cable View More Underground Transmission - [802.11a](https://electricalschool.org/80211a/) - 802.11a Definition: A specification for a wireless LAN that operates in the 5GHz frequency range and provides a data transmission rate of 54Mbps using spread spectrum technology. Related Links Computer Interface Speeds and Distances - CompTIA A+ 220-801: 1.7 | Professor Messer IT Certification Training Courses[TITLE] Related Videos 802.11 Wireless Standards - CompTIA Network+ N10-006 - [802.11b](https://electricalschool.org/80211b/) - 802.11b Definition: A specification for a wireless LAN that operates in the 2.4GHz range and provides a data transmission rate of 11Mbps using spread spectrum technology. This specification was known as Wi-Fi but the term now applies to 802a and 802g as well. Related Links IEEE 802.11b | Wi-Fi | Electronics NotesWireless LAN 802.11 Wi-Fi - [802.11g](https://electricalschool.org/80211g/) - 802.11g Definition: A specification for a wireless LAN that operates in the 2.4GHz frequency range and provides a data transmission rate, over short distances, of 54Mbps using orthogonal frequency division multiplexing (OFDM) technology. Related Links 802.11g+ (MIMO) Vs Standard 802.11g - Wireless - Networking[TITLE]The Great 802.11G+ Hardware Shoot-out, . . . . . are claims - [A](https://electricalschool.org/a/) - A Definition: 1) Amperes; Amps. 2) Area. For cables Area is expressed in Circular Mils. Related Links Ampere (A) electrical unitCalculate AC to DC Amperage Through Inverter | BatteryStuffAmpere - WikipediaSI Units Explained - The ampere Related Videos Wire size vs. amperage View More Battery amp-hour, watt-hour and C rating tutorial View More 12 Volt - [A/D Conversion](https://electricalschool.org/adconversion/) - A/D Conversion Definition: The process of converting an analogue signal into an equivalent digital one utilizing an A/D converter. Related Links Analog-to-digital converter - WikipediaAnalog to Digital Conversion - learn.sparkfun.comA/D conversionWhat is analog-to-digital conversion (ADC)? - Definition from WhatIs.com Related Videos Animation of Analog to Digital Conversion View More Analog to Digital Converter! LEARN AND - [AA](https://electricalschool.org/aa/) - AA Definition: 1) The Aluminum Association. 2) Refers to All Aluminum as in All Aluminum Conductor. Related Links Aluminum Industry Standards | The Aluminum Association Related Videos What is ALUMINIUM ALLOY? What does ALUMINIUM ALLOY mean? ALUMINIUM ALLOY meaning & explanation View More Aluminum Drawn Wire Product Overview View More ASI Q&A: Business case for ## Pages - [Home](https://electricalschool.org/) - Find An Electrician School Near You. Start a New Career with First-Class Training. We offer an in-depth guide to your future as a Licensed Electrician. - [What is a Security and Fire Alarm Installer?](https://electricalschool.org/security-and-fire-alarm-installer/) - What is a Security and Fire Alarm Installer? Careers for electricians are growing, and the market is strong for anyone who is qualified and licensed. And, you don't have to be just a general residential electrician—there are all kinds of areas of specialization to choose from, including working with security systems and fire alarms. These - [Continuing Education Alabama](https://electricalschool.org/al/continuing-education/) - Continuing Education for Electricians in Alabama In order to renew your electrician contractor license with the Alabama Electrical Contractors Board, you must provide proof of the electrical continuing education you have taken. The Board provides a list of approved providers. Search Electrician ProgramsGet information on Electrician programs by entering your zip code and request enrollment - [Journeyman Electrician Exam](https://electricalschool.org/journeyman-electrician-exam/) - The Journeyman Electrician Exam If you have found yourself reaching the end of your apprenticeship as an electrician, you might be excited to start a new phase of your career by becoming a journey-level electrician. Journeyman electricians are the bridge between apprenticeship and master electricians. It’s a stage in your career where you begin to - [Master Electrician License Requirements](https://electricalschool.org/master-electrician-license-requirements/) - Master Electrician License Requirements What is a master electrician? A master electrician is a professional electrician who has completed all of the required training and has significant experience in the field. So, what specific training is needed and how long does it take to become a master electrician? The usual career path for master electricians - [IBEW, NECA Union Apprenticeships](https://electricalschool.org/ibew-neca-union-apprenticeships/) - IBEW, NECA Union Apprenticeships If you have decided to enter training as an electrical apprentice, you will be glad to know that you have chosen a career with a lot of potential for a long and stable future. One of the best parts of choosing an electrician trade is a benefit that starts the very - [Electrician Schooling Cost](https://electricalschool.org/electrician-schooling-cost/) - Discover your 2021 Electrician School Cost. Find our how much your electrical training can cost and how you can get paid while your train. - [How Hard is it to Become an Electrician](https://electricalschool.org/how-hard-is-it-to-become-an-electrician/) - How Hard is it to Become an Electrician? The electrical trade is a safe choice for anyone looking for a growing career, with a lot of stability and opportunities to make money. If you've been thinking about becoming an electrician, you may be wondering how to begin your journey and how hard it is to - [Electrical Contractor License Requirements](https://electricalschool.org/electrical-contractor-license-requirements/) - Want to become an electrical contractor? We provide you with everything you need to know about licensing, educational and legal requirements. - [Continuing Education](https://electricalschool.org/la/continuing-education/) - Continuing Education for Electricians in Louisiana In order to renew your electrician contractor license with the Louisiana State Licensing Board for Contractors, you must provide proof of the electrical continuing education you have taken. The Board provides a list of approved providers. Search Electrician ProgramsGet information on Electrician programs by entering your zip code and - [Electrical Licensing Guide](https://electricalschool.org/electrical-licensing-guide/) - State-by-State Electrician Licensing Guide Are you on your way to becoming a licensed electrician? While learning a trade as essential and complex as the electrical trade takes dedication, it is a worthwhile endeavor, especially considering that employment is predicted to grow by an estimated 74,100 jobs between 2018 and 2028. With this kind of growth, you can - [Best Electrician Tool Belt](https://electricalschool.org/best-electrician-tool-belt/) - We've sorted out the five best electrician tool belts from the market right now to make things easy for you. Choose from these readily available options. - [Best Electrician Scissors](https://electricalschool.org/best-electrician-scissors/) - There are many kinds of electrician scissors that come with specific designs and have different cutting jobs. Electricians switch between multiple tools. - [Best Electrical Work Boots](https://electricalschool.org/best-electrical-work-boots/) - Looking for electrical safety boots is a tough task, but finding the right shoe just got easier. Read well-scrutinized reviews of the best boots available. - [Best Hard Hats For Electrician](https://electricalschool.org/best-hard-hats-for-electrician/) - Whether you are a new or seasoned electrician, you require good personal protective gear for your safety & it includes the best hard hat for construction. - [Best Pliers For Electrician](https://electricalschool.org/best-pliers-for-electrician/) - We've compiled a list of the best pliers in the world. Some safety wire pliers come with a one-year warranty, but there are choices with lifetime warranties. - [Best Fish Tape](https://electricalschool.org/best-fish-tape/) - The perfect fish tape has ease of use and sufficient length for any task. Make sure that you choose a fish tape that suits the specifications of your projects. - [Best Hammer For Electrician](https://electricalschool.org/best-hammer-for-electrician/) - Not every hammer you find in the market can boost the productivity of an electrician. We have gone through the multiple hammer options and found the best. - [Best Utility Knife For Electrician](https://electricalschool.org/best-utility-knife-for-electrician/) - Looking for a utility knife just got easier. We have a specially curated review list featuring the best utility pocket knives on the market. - [Best Impact Driver](https://electricalschool.org/best-impact-driver/) - We talked to electricians, plumbers, carpenters, and many others who have used an impact driver in their work domain. Together, we created this top 5 list. - [Best Work Gloves For Electrician](https://electricalschool.org/best-work-gloves-for-electrician/) - This review article is an excellent resource for the best gloves for electrical work. Kindly read the FAQs to clarify the most asked questions on this topic. - [Best Work Pants For Electrician](https://electricalschool.org/best-work-pants-for-electrician/) - There is no need to spend the entire day in tight-fitting and sweaty workout pants. Here are the Top 5 Workout pants available in the market. - [Best Work Jeans For Electrician](https://electricalschool.org/best-work-jeans-for-electrician/) - Are you actively looking for a perfect work pant? We have got you covered! Our article provides five of the best work jeans available on the market. - [Best Electrician Tool Bag](https://electricalschool.org/best-electrician-tool-bag/) - Your search for the best electrician tool bag ends here. We have curated a list of the 5 best electrician tool bags that fit your needs accurately. FAQs too! - [Best Circuit Breaker Finder](https://electricalschool.org/best-circuit-breaker-finder/) - A portable circuit breaker finder is the best friend an electrician could have. A circuit breaker finder is a time-saving tool that you may need frequently. - [Best Electrician Tools](https://electricalschool.org/best-electrician-tools/) - What are the Best Electrician Tools and Gear for 2022? Ready to start your career with the best equipment? Having the right tool for the job at hand will save you time. Buying the right tool first time will save you money. Here’s a list of tools and gear you’re going to need day to - [Aprendizajes IEC y ABC no sindicada](https://electricalschool.org/es/aprendizajes-iec-y-abc-no-sindicada/) - Tanto si ingresa a un aprendizaje directamente o al finalizar un curso, es una parte esencial para obtener los conocimientos que necesita para trabajar como electricista. - [Aprendizaje sindicalizado](https://electricalschool.org/es/aprendizaje-sindicalizado/) - El aprendizaje sindical para electricistas tiene la ventaja y beneficios de ser miembro de un sindicato, como un salario más alto y más oportunidades para avanzar. - [Carreras de electricista en sistemas de automatización de edificios](https://electricalschool.org/es/carreras-de-electricista-en-sistemas-de-automatizacion-de-edificios/) - A medida que los sistemas de automatización de edificios (BAS) se vuelven más comunes, se necesitan electricistas que para instalar, reparar y mantener los sistemas. - [Cómo Convertirse en Aprendiz de Electricista](https://electricalschool.org/es/como-convertirse-en-aprendiz-de-electricista/) - En general, para convertirse en electricista, tendrá que pasar por algún tipo de aprendizaje para comenzar su carrera en el trabajo eléctrico. - [Ingeniería eléctrica frente a tecnología eléctrica: ¿cuál es la diferencia?](https://electricalschool.org/es/ingenieria-electrica-frente-a-tecnologia-electrica-cual-es-la-diferencia/) - Una carrera relacionada con la electrónica y los sistemas eléctricos puede ser desafiante y gratificante y exigente, pero para elegir el camino adecuado, es importante tomar algunas decisiones. - [Requisitos de licencia de contratista eléctrico](https://electricalschool.org/es/requisitos-de-licencia-de-contratista-electrico/) - Los contratistas eléctricos trabajan en edificios comerciales y residenciales, instalando, manteniendo y solucionando problemas de sistemas eléctricos. - [Wolverine Men's Tarmac Work Boot Review](https://electricalschool.org/wolverine-mens-tarmac-work-boot-review/) - Wolverine Men's Tarmac Work Boot Review Wolverine is a leading brand for work boots and has a reputation for delivering products that combine durability, protection, and comfort. The Wolverine men's tarmac work boot carries on this tradition, boasting an impressive protection rating and using innovative design techniques to maximize all-day comfort for outdoor workers. Search - [Carreras especializadas para trabajadores eléctricos](https://electricalschool.org/es/carreras-especializadas-para-trabajadores-electricos/) - La formación en tecnología eléctrica puede generar una serie de oportunidades profesionales que van mucho más allá del trabajo como electricista. - [Examen de maestro electricista](https://electricalschool.org/es/examen-de-maestro-electricista/) - Convertirse en maestro electricista requiere mucho trabajo, incluidos cuatro o cinco años de aprendizaje y al menos dos años como electricista oficial - [Examen de oficial electricista](https://electricalschool.org/es/examen-de-oficial-electricista/) - Si ha llegado al final de su aprendizaje como electricista, seguro que esté emocionado por comenzar una nueva fase al convertirse en un electricista oficial. - [Guía de licencias de electricista Estado por Estado](https://electricalschool.org/es/guia-de-licencias-de-electricista-estado-por-estado/) - Para obtener más información sobre cómo convertirse en un electricista con licencia en el lugar donde vive, haga clic en su Estado a continuación. - [¿Qué es un electricista comercial?](https://electricalschool.org/es/que-es-un-electricista-comercial/) - Estos electricistas trabajan con sistemas más amplios y en grandes edificios, como centros comerciales, edificios de oficinas, restaurantes y rascacielos. - [Requisitos de licencia de maestro electricista](https://electricalschool.org/es/requisitos-de-licencia-de-maestro-electricista/) - La trayectoria profesional habitual de los maestros electricistas incluye de cuatro a cinco años de aprendizaje, seguidos de al menos dos años como jornalero. - [Requisitos de licencia de oficial electricista](https://electricalschool.org/es/requisitos-de-licencia-de-oficial-electricista/) - Los oficiales electricistas instalan, mantienen y reparan sistemas eléctricos tanto en entornos residenciales como comerciales. - [Timberland Pro Endurance 6 Inch Steel Safety Toe Work Boot Review](https://electricalschool.org/timberland-pro-endurance-6-inch-steel-safety-toe-work-boot-review/) - Comprehensive Review for Timberland Pro Endurance 6 Inch Steel Safety Toe Puncture Resistant Work Boot Widely recognized as one of the highest quality and most trusted boot manufacturers out there, Timberland is living up to its great reputation with the men's Timberland Pro Endurance 6 steel toe work boots. Search Electrician ProgramsGet information on Electrician - [¿Qué es un electricista residencial?](https://electricalschool.org/es/que-es-un-electricista-residencial/) - Los electricistas residenciales trabajan en edificios que son residencias, viviendas unifamiliares y pequeños edificios de apartamentos. - [¿Qué es un técnico de centrales eléctricas y subestaciones?](https://electricalschool.org/es/que-es-un-tecnico-de-centrales-electricas-y-subestaciones/) - Las plantas de energía que suministran electricidad dependen del electricista para instalar, mantener y reparar los sistemas utilizados en estas operaciones. - [¿Qué es un inspector eléctrico?](https://electricalschool.org/es/que-es-un-inspector-electrico/) - En los próximos años se necesitarán miles de inspectores eléctricos, que revisan el cableado, los sistemas y componentes eléctricos de los edificios - [¿Qué aprenderé en un programa de tecnología eléctrica?](https://electricalschool.org/es/que-aprendere-en-un-programa-de-tecnologia-electrica/) - La tecnología eléctrica tiene que ver con la electricidad, los equipos eléctricos y la instalación, mantenimiento y reparación de sistemas eléctricos. - [¿Qué es un electricista especialista en letreros?](https://electricalschool.org/es/que-es-un-electricista-especialista-en-letreros/) - Un especialista en letreros puede trabajar en interiores o al aire libre, y el trabajo suele ser físicamente exigente y, a veces, peligroso. - [¿Qué es un instalador de alarmas de seguridad y contra incendios?](https://electricalschool.org/es/que-es-un-instalador-de-alarmas-de-seguridad-y-contra-incendios/) - Son trabajadores eléctricos que instalan, mantienen y reparan sistemas de seguridad e incendios en entornos residenciales, comercialese industriales. - [Trabajar como instalador y reparador de líneas (liniero) externas](https://electricalschool.org/es/trabajar-como-instalador-y-reparador-de-lineas-liniero-externas/) - El liniero también puede llamarse reparador o instalador de líneas y trabaja al aire libre en el cableado entre los edificios y las plantas de energía. - [¿Qué es un Electricista de Aerogeneradores?](https://electricalschool.org/es/que-es-un-electricista-de-aerogeneradores/) - Anticipándose a la alta demanda, hay programas de capacitación en tecnología eólica en todo el país, pero no en el sur profundo (a menos que cuente con Miami). - [¿Qué es un Electricista Industrial?](https://electricalschool.org/es/que-es-un-electricista-industrial/) - Los electricistas industriales se diferencian de otros electricistas en que trabajan en entornos industriales: plantas, fábricas, instalaciones de fabricación. - [¿Qué es un técnico solar?](https://electricalschool.org/es/que-es-un-tecnico-solar/) - Si está interesado en seguir una carrera en el campo eléctrico y le gusta estar al aire libre, la formación como técnico solar es una excelente opción. - [Master Electrician Exam](https://electricalschool.org/master-electrician-exam/) - The master electrician exam takes you to higher levels of responsibilty and earnings. Find out all you need to know about the exam and state-by-state licensing rules for master electricians. - [Electrical Technology Program](https://electricalschool.org/electrical-technology-program/) - Studying Electrical Technology at college or university is a good starting option for future electricians and electrical technicians. Find out what you'll learn. - [Best Voltage Tester For Everyday Use](https://electricalschool.org/best-voltage-tester/) - We narrowed the list down to the best voltage testers for everyday use based on customer reviews and hands-on testing. We hope it helps. - [Best Wire Strippers](https://electricalschool.org/best-wire-strippers/) - We list the best electrical wire strippers in the market. Most are aimed directly at the professional electrician, but are perfect for the enthusiast too. - [Best Multimeter You Can Find](https://electricalschool.org/best-multimeter/) - Are you buying a new multimeter? It is normal to get confused between the choices in a market. We chose the best multimeter options you can find in 2021. - [California 2](https://electricalschool.org/ca/2-2/) - Search in Seconds for Electrician Schools in California. Get All The Details: Reviews of the best colleges and apprenticeship programs. - [¿Cuánto cuesta la formación para convertirse en electricista?](https://electricalschool.org/es/cuanto-cuesta-la-formacion-para-convertirse-en-electricista/) - Aquellos que estén considerando formarse en una nueva carrera pueden estarán preocupados por el coste. Los oficios son únicos, ya que se empieza a ganar dinero mientras. - [Ariat Overdrive XTR Review](https://electricalschool.org/ariat-overdrive-xtr-review/) - Ariat Overdrive XTR Review If you've been searching high and low on the Internet for a pair of high-quality electrician work boots, you may have become familiar with the Ariat brand. 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While training to become an electrician, it's - [About Us](https://electricalschool.org/about-us/) - About ElectricalSchool.org Training as an electrician is no joke, and with the various options for training available, it may be confusing to know where to begin. That is why we created Electrical School. Electrical School is a partnership of trained electricians with different levels of experience in the field. As electricians who have been through - [What is a Residential Electrician?](https://electricalschool.org/residential-electrician/) - What is a Residential Electrician? When choosing a career in electrical work you'll face a number of choices, including what kind of electrician you want to be. There are two main types of wireman electricians: residential and commercial. 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Your Name (required) Your Email (required) Subject Your Message [mathcaptcha mathcaptcha-167] ElectricalSchool.org - [Glossary](https://electricalschool.org/glossary/) - A Glossary of Electrical Terms ABCDEFGHIJKLMNOPQRSTUVWXYZ# A A AA AAAC AAC AAC/TW AASHTO Absorbed Glass Mat ACAR ACB Access Point Accuracy Class ACSR ACSR/AW ACSR/TW ACSS ACSS/AW ACSS/TW Active Material (Battery) Active Power Adjustment Admittance ADSL AEIC Aeolian Vibration Aerial Cable AFCI AFD AFI AIC Air Blast Breakers AIS Alley Arm All-or-Nothing Relay Alternating Current ## Affiliate Links - [PennFoster](https://electricalschool.org/recommends/pennfoster/) ## Categories - [Glossary](https://electricalschool.org/category/glossary/) - A full glossary of terms commonly used by electricians. For a full alphabetically-ordered version of this glossary, see this page. - [California](https://electricalschool.org/category/california/) - Everything you need to know about becoming an electrician in California. - [Florida](https://electricalschool.org/category/florida/) - Everything you need to know about becoming an electrician in Florida. - [Illinois](https://electricalschool.org/category/illinois/) - Everything you need to know about becoming an electrician in Illinois. - [Missouri](https://electricalschool.org/category/missouri/) - Everything you need to know about becoming an Electrician in Missouri. - [Washington](https://electricalschool.org/category/washington/) - Explore top electrical training programs in Washington. Gain hands-on experience and certification for a successful career in the electrical industry. - [Michigan](https://electricalschool.org/category/michigan/) - Explore top electrical programs and training opportunities in Michigan. 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Gain hands-on experience & industry-ready skills for a successful career! - [Electrical Engineering Degrees](https://electricalschool.org/category/electrical-engineering/degrees/) - Online Electrical Engineering Degrees Best Electrical Engineering Degrees Bachelors Degrees Masters Degrees PhD - [HVAC](https://electricalschool.org/category/hvac/) - Articles on HVAC technolgy and training.