When installed under metal-corrugated sheet roof decking, cables, raceways, and enclosures are permitted in concealed locations of metal-corrugated sheet decking type roofing if they are at least 2 in. away from a structural support member. a) True b) False See answer and applicable Code reference The correct answer is: b) False The protection against physical damage requirements  for conductors, raceways and cables are outlined in Sec. 300.4 of the 2011 NEC. As per 300.4(E), "A ...

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