Wire Depth Near Roof

Green Machine

Member
Location
Tennessee
Occupation
Electrician
I had a conversation with a roofer I've done some work with: he has now twice had one of his guys nail through wire that is too close to his roof deck. He asked how far from his roof deck or wood had to stay. He wanted to know if he really was responsible for knowing where wires are under a roof deck.

I at first assumed 1¼", since that is the distance in walls, but he pointed out that his nails could go as far as 2" to 2½".

Is there a separate code for roof decks from walls?
 
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