USE

Underground Service Entrance conductor or cable.

URD

Underground Residential Distribution.

Unrestricted Protection

A protection system which has no clearly defined zone of operation and which achieves selective operation only by time grading.

Universal Bushing Well

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.