Branch Circuits & WiringQuestion 238 of 521
Which set of colors is NOT permitted for ungrounded (hot) conductors, because these colors are reserved for other uses?
a.Black and red
b.White, gray, and green
c.Blue and brown
d.Orange and yellow
Explanation
White and gray are reserved for grounded (neutral) conductors and green (or green/yellow) for grounding, so none may be used for ungrounded conductors. Black, red, blue, brown, orange, and yellow are all acceptable ungrounded colors.
Law Reference: 2023 NEC §200.6Practice all 521 questions free — no signup required.
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