Question 6015 of 749 · Maryland Journeyperson Electrician Exam
Under NEC 2020 and 2023, a cable run under metal-corrugated sheet roof decking must be kept at least how far from the lowest surface of the decking?
Exactly one answer is correct.
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Correct answer to question 6015
- C: 1 1/2 in
Explanation
Cables and raceways under metal-corrugated sheet roof decking must be at least 1 1/2 in from the lowest surface of the decking to protect them from roofing screws. See 300.4(E).
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