Underground cable

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1

Originally Posted By: James D Mosier
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Hello.


As I understand it, UF cable is for direct burial. What about wiring in plastic conduit that is buried? Does this need to be UF also?

Is regular Romex (or whatever #6 would be called) cable be OK? If not what is proper?

Thanks,

--
Jim Mosier

2

Originally Posted By: jpope
This post was automatically imported from our archived forum.


Romex is not okay for direct burial.


ENT (Smurf tubing), LFMC and FMC are not okay for direct burial.

EMT (if coated and approved), RMC (if coated), UF and RNC (PVC) okay for direct burial with specific depth requirements.

--
Jeff Pope
JPI Home Inspection Service
"At JPI, we'll help you look better"
(661) 212-0738

3

Originally Posted By: bkelly1
This post was automatically imported from our archived forum.


There are service cables sold with 3 #6’s and ground that are rated for underground wiring.

4

Originally Posted By: jpope
This post was automatically imported from our archived forum.


bkelly1 wrote:
There are service cables sold with 3 #6's and ground that are rated for underground wiring.


They are called UF (underground feeder) Cables.

--
Jeff Pope
JPI Home Inspection Service
"At JPI, we'll help you look better"
(661) 212-0738
5

Originally Posted By: James D Mosier
This post was automatically imported from our archived forum.


The Romex part of my question is about being underground in pvc conduit.


You guys are great!

--
Jim Mosier

6

Originally Posted By: bkelly1
This post was automatically imported from our archived forum.


You can pull romex in pvc, but it is much easier to pull thhn.

7

Originally Posted By: Greg Fretwell
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You can’t use Romex in any “wet location”, raceway or not.


Underground is a wet location.


Go with THWN. Usually "THHN" is dual rated THHN/THWN but be sure it is labelled that way.

8

Originally Posted By: James D Mosier
This post was automatically imported from our archived forum.


Thanks!

–
Jim Mosier