Romex in Commercial Buildings

[rcaron]

Is Romex cable (NM) allowed above a suspended ceiling in a commercial building?

cite: code reference please.

When is Romex not allowed in commercial buildings -in general not for a specific city -like Chicago.

 

[ryan_618]

Re: Romex in Commercial Buildings

No. 334.12

 

[don_resqcapt19]

Re: Romex in Commercial Buildings

Is Romex cable (NM) allowed above a suspended ceiling in a commercial building?

No. 334.12(A)(1)

When is Romex not allowed in commercial buildings

334.10(3). NM can not be used in buildings of Type I or II construction.

 

[612278]

Re: Romex in Commercial Buildings

Hello-
I didn't know that they took out from the 1999 nec
art:336-5 (a)1--
"In any multifamily dwelling or other structure exceeding three floors and above" In the 2002 it's been taken out. So if I have a 5 floor building I can run nm.

 

[don_resqcapt19]

Re: Romex in Commercial Buildings

Steve,

So if I have a 5 floor building I can run nm

You can run it as long as the building is not of Type I or II construction. Note: there may be local rules that prohibit the use of NM in this application.
Don

 

[ryan_618]

Re: Romex in Commercial Buildings

Very doubtful you could build a five story that is not type I or II. I don't have my IBC in front of me, but think you would have to be type III plus one hour walls and a fire sprinklered building. It would probably be cheaper to just go type II and sprinklers.