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PVC Wet location?? #85479
07/07/03 11:42 PM
07/07/03 11:42 PM
Edward  Offline OP
Joined: Dec 2002
Posts: 308
I hdd a subpanel feed about 60 feet under ground in PVC. Inspector did not pass because the 2-3 that was pulled through the PVC not wet location rated. Is the inside of the PVC wet location??


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Re: PVC Wet location?? #85480
07/08/03 12:46 AM
07/08/03 12:46 AM
stamcon  Offline
Joined: Mar 2001
Posts: 330
So San Francisco CA
Edward, from the 99 NEC Article 100-Locations- "Wet Locations. Installations underground or in concrete slabs or masonry in direct contact with the earth, and locations subject to saturation with water or other liquids, such as vehicle washing areas, and locations exposed to weather and unprotected."
If it's in the ground, it's a wet location.

Re: PVC Wet location?? #85481
07/08/03 03:59 AM
07/08/03 03:59 AM
iwire  Offline
Joined: Jan 2003
Posts: 4,391
North Attleboro, MA USA
From the 2002 NEC


300.5(D)(5) Listing. Cables and insulated conductors installed in enclosures or raceways in underground installations shall be listed for use in wet locations.

And the definition of Wet location is the same as stamcom put up from the 99 code.

Bob Badger
Construction & Maintenance Electrician
Re: PVC Wet location?? #85482
07/08/03 04:58 AM
07/08/03 04:58 AM
PCBelarge  Offline
Joined: Jun 2003
Posts: 681
Dobbs Ferry, NY, USA
Alot of the conductors today come with a THHN/THWN rating, where the rating of the conductor is 90 degrees (column 3, table 310.16) if you use it as THHN, or 75 degrees (column 2, table 310.16) if you use it for THWN. The THWN is permitted for wet locations at 75 degrees. I am curious as to what conductor type you did use?


Pierre Belarge
Re: PVC Wet location?? #85483
07/08/03 08:40 AM
07/08/03 08:40 AM
Bjarney  Offline
Joined: Apr 2002
Posts: 2,527
West-Southern Inner-Northeast ...
To add to comments already posted… In many regions, underground raceways breath and accumulate moisture, no matter how much “sealing” is attempted. If “2-3” is a multiconductor cable, it’s unlikely that the individual conductors (or the outer cable jacket) are labeled for wet locations—like you would find with XHHW or USE/RHW conductors.

Re: PVC Wet location?? #85484
07/11/03 06:48 AM
07/11/03 06:48 AM
pip  Offline
Joined: Dec 2000
Posts: 15
Little Elm,Tx
The only way to keep water out of any conduit
with fitttings underground is to pressurize it. I live in dallas,tx and have never pulled wire out of an exsiting conduit underground that was not completely full of water.


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