I'm curious to know how folks support NM for temp wiring on their jobsites.
Most of the general contractors' "safety inspectors" in my area say that NM can not be supported by metallic means, period, sharp edge or otherwise. Does anyone know an OSHA or NEC reg that supports their position? I can't find one, nor can they. These "safety inspectors" want the NM supported by cable ties or an insulated wire. How in the world can you isolate temp wiring from all the metal in a commercial building? I think the outer sheath of NM is sufficient.
NM can still be damaged by these methods, thus exposing the 'hot' wire with no way of shorting and allowing for workers to come in physical contact with this wire. How much can you really trust the GFCI recept? Yeah I test 'em once a week, and usually find one that's not operational. Not to mention that temp lighting is not GFCI protected.
In my mind it seems as though NM should be supported by a metallic means so IF the cable is damaged at least is has a better chance to trip the breaker or GFCI.
Someone please set me straight, or give me some ammo for the safety inspectors. This 'battle' is getting old. I need to get right or have something in writing to help nip this in the bud once and for all.
Thanks
Brent
Most of the general contractors' "safety inspectors" in my area say that NM can not be supported by metallic means, period, sharp edge or otherwise. Does anyone know an OSHA or NEC reg that supports their position? I can't find one, nor can they. These "safety inspectors" want the NM supported by cable ties or an insulated wire. How in the world can you isolate temp wiring from all the metal in a commercial building? I think the outer sheath of NM is sufficient.
NM can still be damaged by these methods, thus exposing the 'hot' wire with no way of shorting and allowing for workers to come in physical contact with this wire. How much can you really trust the GFCI recept? Yeah I test 'em once a week, and usually find one that's not operational. Not to mention that temp lighting is not GFCI protected.
In my mind it seems as though NM should be supported by a metallic means so IF the cable is damaged at least is has a better chance to trip the breaker or GFCI.
Someone please set me straight, or give me some ammo for the safety inspectors. This 'battle' is getting old. I need to get right or have something in writing to help nip this in the bud once and for all.
Thanks
Brent