Commercial ceiling

[guschash]

Where in the code does talk about how close you can be from the ceiling so that roofer nails won’t damage box’s and conduit. I remember see it but I don’t have my code book with me. Thanks

 

[Electromatic]

300.4(E)
not less than 1.5" between lowest part of deck and highest part of cable, raceway, or box

 

[guschash]

Thanks, I thought that’s what was. Wasn’t this new for 2017!

 

[packersparky]

Thanks, I thought that’s what was. Wasn’t this new for 2017!

It first appeared in the 2008 NEC.