2008 NEC Section 300.5 defines underground conduit as a wet location. Section 725 states that only parts of section 300 that are specifically mentioned apply. There is no reference to section 300.5 for class 2 wiring anywhere in 725. Does this mean that class 2 wiring going in underground conduit does not need to be rated for wet location? If it does need to be rated for wet location, please point me to the spec.
Class 2 wiring in Underground conduit
- Thread starter jedmund
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- Illinois
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- retired electrician
It appears that the code does not require the use of a cable that it suitable for wet locations for this application, but do you want the circuit to work for more than a year or two?
LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
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- Electrical Contractor
Why does that matter? You can put DB cable in conduit, can't you?
dcspector
Senior Member
- Location
- Burke, Virginia
Phone company does it all the time that is why we run all those 4" spares for them and look at the cable it is DB......Good point larry!
chris kennedy
Senior Member
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- Miami Fla.
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- 60 yr old tool twisting electrician
dcspector
Senior Member
- Location
- Burke, Virginia
And how big is the cable pulled through the 4"?
Tell me about it.....you know what I was saying. example 0ne 4" with one 24 pair ug cable.....
Volta
Senior Member
- Location
- Columbus, Ohio
You'll probably find that a simple CM type (PVC) cable will be just fine in that wet conduit.
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