In an elementary diagram of switched lighting in the electrical-power distribution system of a building, which is normally referenced to earth ground ___

In an elementary diagram of switched lighting in the electrical-power distribution system of a building, which is normally referenced to earth ground for protection against lightning or other voltage surges, because the supply, control point, and connected load are located remote from each other in this application, the required circuit conductors (both grounded and ungrounded,) as well as the non-circuit equipment-grounding conductor, must be ___________ - ___________.

This indicates their purpose or function, and aids in distinguishing one from the other.

A) color-coded
B) at-rest
C) none of the answers
D) non-conducting

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Answer:A

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