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#79242 - 12/11/01 02:56 AM Romex in pipe  
aldav53  Offline
Member
Joined: Aug 2001
Posts: 545
Chandler, AZ USA
I can't see any reason why you can't run romex in emt even when using compression fittings? Seems safe to me.


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#79243 - 12/11/01 07:01 AM Re: Romex in pipe  
sparky  Offline
Member
Joined: Oct 2000
Posts: 5,307
To be compliant, the notes to chap 9 should be met. also compression insinuate wet/damp location, so the wire would have to follow suit.
[Linked Image]


#79244 - 12/11/01 08:09 AM Re: Romex in pipe  
Redsy  Offline
Member
Joined: Mar 2001
Posts: 2,056
Bucks County PA
I had an argument with the "Pro" at sell-all supply house. I maintain that if conduit is installed in a wet location, the interior or that conduit is a wet location, and wiring should be rated accordingly. He looked at me like I was from Mars, and insisted that the PVC conduit made it a dry location. Then he told me that he should know, because he is an electrician. (Don't ask me questions bud, just give me my UF)!!
BTW,
Also there may be other issues about complete raceway systems.


#79245 - 12/11/01 07:13 PM Re: Romex in pipe  
rkukl  Offline
Member
Joined: Oct 2001
Posts: 41
Turners Falls,MA. USA
Its common practice in my area to see the following. “Appropriately” sized PVC buried to supply a separate building with the PVC stubbed into the basement with a fitting “male adapter” and sometimes a bushing and the same at the other end. Then to have SER cable pulled in and run to the panel and sub-panel in the out building. I think that this is ok, one reason is that the conductors in the SER are XHHW rated for wet locations. What do the rest of you think?


#79246 - 12/11/01 08:45 PM Re: Romex in pipe  
resqcapt19  Offline
Member
Joined: Nov 2000
Posts: 2,148
IL
Redsy,
The new code makes it very clear that you can't use NM in an underground conduit.
"300.5(D)(5) Listing. Cables and insulated conductors installed in enclosures or raceways in underground locations shall be listed for use in wet locations."
Don(resqcapt19)


Don(resqcapt19)

#79247 - 12/12/01 02:44 AM Re: Romex in pipe  
aldav53  Offline
Member
Joined: Aug 2001
Posts: 545
Chandler, AZ USA
Still seems like NM would be fine in conduit as long as it is a weatherproof installation. THHN wire is allowed so why not NM.


The Golden Rule - "The man with the gold makes the rule"

#79248 - 12/12/01 03:57 AM Re: Romex in pipe  
Joe Tedesco  Offline
Member
Joined: Oct 2000
Posts: 2,749
Boston, Massachusetts USA
THHN is not permitted to be used in a wet location. See Table 310-13

[This message has been edited by Joe Tedesco (edited 12-24-2001).]


Joe Tedesco, NEC Consultant

#79249 - 12/12/01 09:49 AM Re: Romex in pipe  
Redsy  Offline
Member
Joined: Mar 2001
Posts: 2,056
Bucks County PA
Don,
My application was actually above ground, outdoors. I still say the interior is a wet location. I don't think the previous code was as clear on this. I often see NM run in PVC up the side of a house to get circuits in the attic for distribution throughout the second floor. I believe UF would be acceptable.

rkukl,
I would say that SER is not approved for underground use. Even in conduit. It may be debatable, especially now with the wording of 300.5 (D)(5), but I believe USE would have been be the proper method. See 338.2


[This message has been edited by Redsy (edited 12-12-2001).]


#79250 - 12/12/01 10:38 AM Re: Romex in pipe  
sparky66wv  Offline
Member
Joined: Nov 2000
Posts: 2,236
West Virginia
What about THHN with a THWN listing?

Or said another way... I've never seen THHN without a THWN listing...


-Virgil
Residential/Commercial Inspector
5 Star Inspections
Member IAEI

#79251 - 12/12/01 11:16 AM Re: Romex in pipe  
aldav53  Offline
Member
Joined: Aug 2001
Posts: 545
Chandler, AZ USA
THHN is allowed underground in ridgid pipe wrapped with pipe wrap, isn't this considered damp or wet location?


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