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#79242 12/11/01 02:56 AM
Joined: Aug 2001
Posts: 545
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aldav53 Offline OP
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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
Joined: Oct 2000
Posts: 5,392
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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.
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#79244 12/11/01 08:09 AM
Joined: Mar 2001
Posts: 2,056
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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
Joined: Oct 2001
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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
Joined: Nov 2000
Posts: 2,148
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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
Joined: Aug 2001
Posts: 545
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aldav53 Offline OP
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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.


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#79248 12/12/01 03:57 AM
Joined: Oct 2000
Posts: 2,749
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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
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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
Joined: Nov 2000
Posts: 2,236
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What about THHN with a THWN listing?

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


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


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