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UF in pipe #30015 09/28/03 11:26 PM
Joined: Aug 2001
Posts: 545
A
aldav53 Offline OP
Member
I saw a job where the customer ran UF in PVC pipe underground. Now I know your not supposed to run NM but what about UF? Is it legal? I would think it would be.


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Re: UF in pipe #30016 09/29/03 12:41 AM
Joined: Mar 2001
Posts: 333
S
stamcon Offline
Member
The 99NEC permits UF and NM cables to be run in pipe(NM can't be in a "wet" location). 300-5(c) requires cables installed under buildings to be in a raceway. 300-5(d) requires direct buried conductors and cables emerging from the ground to be in an enclosure or raceway from the minimum cover distance to at least 8' above finished grade.


Steve
Re: UF in pipe #30017 09/30/03 07:31 PM
Joined: Aug 2003
Posts: 173
S
Speedy Petey Offline
Member
What about an assembly being in a raceway?
In this case UF and NM are basically the same thing, no?
A sleeve up the side of a structure I can see but not a complete conduit.


Speedy Petey

"Anyone who has never made a mistake has never tried anything new." -Albert Einstein
Re: UF in pipe #30018 10/01/03 03:40 AM
Joined: Jan 2003
Posts: 4,391
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iwire Offline
Moderator
Using PVC to protect NM cable from physical damage is spelled out in 334.15(B)

And 340.10(4) tells us that the rules of 334 will apply to UF cable.

Also 300.5(D)(1) requires direct buried cables and conductors emerging from grade are to be protected from damage.


Bob Badger
Construction & Maintenance Electrician
Massachusetts

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