Conductors for 480Y/277-volt systems are generally brown, orange, ____ for the ungrounded conductors and gray for the grounded conductor..
A)green
B)black
C)yellow
D)blue

Question

Quizplus · Accepted Answer

For 480Y/277-volt systems, the standard color coding for ungrounded conductors is brown, orange, and yellow. Gray is used for the grounded conductor, and green is typically used for the grounding conductor.

Conductors for 480Y/277-Volt Systems Are Generally Brown, Orange, ____ for the Ungrounded