Question 4112 of 749 · Maryland Journeyperson Electrician Exam
A white conductor in a cable assembly is used as an ungrounded conductor for a switch loop. What does the NEC require?
Exactly one answer is correct.
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Correct answer to question 4112
- B: Permanent reidentification at each location where it is visible
Explanation
200.7(C) permits a white or gray insulated conductor in a cable to be used as an ungrounded conductor only if it is permanently reidentified, such as by marking tape or paint, at each location where it is visible and accessible. For switch loops it must also be used as the supply to the switch, not the return.
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