electricalscho

Overhead Line

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.

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.

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

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 This device and its holder have generally been replaced by Fused Cutouts where the fuse element in an arc tube.