Fire pipe and romex

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Cavie

Cavie

Senior Member
Location
SW Florida
An electrician asked me today what I knew about romex in contact with plastic fire sprinkler pipe. Seems the Firemarshall has contacted the maufacture of the orange fire pipe to ask about the plastic pipe coning in contact with other plastics. Seems the manufacturer stated that the fire masrshal was correct in that the fire plastic pipe may not come into contact with any other plastic. (Romex wire) or any other plastic. The project is on hold untill the powers to be work it out. Has anyone heard of this???
 
News 2 me! But why is the project on hold? If it's an issue, just make sure your romex stays away from the sprinkler pipes. Extras staples if necesarry.
 
480sparky said:
News 2 me! But why is the project on hold? If it's an issue, just make sure your romex stays away from the sprinkler pipes. Extras staples if necesarry.
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Not my job. I am the electric inspector. I was asked what I knew about it. "I know Nothing, Nothing!!!" Fire Marshall put the job on hold as in "no drywall" untill they figure it out.
 
Cavie said:
Not my job. I am the electric inspector. I was asked what I knew about it. "I know Nothing, Nothing!!!" Fire Marshall put the job on hold as in "no drywall" untill they figure it out.
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Never heard an inspector admit that. :)
 
huh?!?!? I have never, ever heard of a dissimilar plastic reactions or anything like that! Looking at my Blazemaster (CPVC sprinkler pipe) Do's and Don'ts it doesn't say anything about that...though you can't use Crisco on it... ;)

I am interested to how this will turn out.Cavie, PM me when you find out, would you?
 
I'm guessing that the FM is confusing "touching" with "supporting'. You cannot support rx from a fire pipe. I will look into this more.
 
Cavie said:
I'm guessing that the FM is confusing "touching" with "supporting'. You cannot support rx from a fire pipe. I will look into this more.
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FM correctly stated that. Sprinkler pipe cannot be used to support anything else but itself (NFPA 13). The reasoning behind this is because of the hydraulic forces that occur when the system activates. The manufactures and FM's don't want any breakage in the lines which would cause an accidental activation if something is being supported by it. You and I both know that romex doesn't weigh much; however a sprinkler system is hydraulically calced and that calc doesn't include any weight it doesn't need to.

Hope that helps.
 
and the answer is.....

and the answer is.....

I talked to the Fire Marshall today and he showed me the Manufacturer Install Instructions for "Blaszemaster" Pipe. It stated that no cable or pipe containing "plastisiser" shall be in contact witht the pipe. The electrician tied up any offending cables and all is well. My AHJ said to leave that one up to the fire marshall.
 
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