Does code permit romex in PVC conduit?

crankcase

Does code permit me to rough in a 2" PVC conduit from a sub panel in attached garage back into the basement? It would maybe be 15'. I will probably be insulating and rocking the garage soon and that way I could fish a few circuits later when I get to finishing the basement.

Lockeset

Yes, you can run the conduit to a box located in the basement. Then you would run THHN from the panel to the box. Inside that box you would splice the THHN to romex that leaves the box and goes to wherever you need it. You can only run romex in pipe when using the pipe for protection.

crankcase

I guess that wouldn't be too bad. I guess I'd just run THHN to a 10x10 PVC junction box and install a couple of DIN rails with some terminal strips. Then Romex out. Would the backplane require additional grounding if it's metal?

brric

You can only run romex in pipe when using the pipe for protection.

Would you please cite an NEC article that confirms your statement.

kbsparky

You can NOT install romex in PVC conduit IF that conduit is located outside, or buried underground.

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crankcase

Nope, it would be a common wall between attached garage and the house.

frenchelectrican

I wrote the underline there you will run a major issue is derating due the numbers of conductors you will plan to pull thru it don't matter if you use the THHN/THWN or NM cable the rules cover this one very well.

You can do it but this part will haunt ya if not addressed yet.

Merci.
Marc

Scuba_Dave

That's false
You can run romex in conduit as long as the conduit is sized large enough for the cable
As stated it can't be run underground or outside
The derating mentioned is something to watch out for
Any more then 3 circuits & I'd run a small sub

jbfan

Forget the din rail and strips.
Use wire nuts!

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Tuckahoe Sparkplug

I would point out that some of our local jurisdictions won't allow it due to a lack of permanent fire blocking.

crankcase

I've decided to take some time to plan out exactly how we are going to finish off the basement. Then I will calculate the # of circuits and figure to run 2 extra circuit runs in case plans change. I will use 12-2 runs of romex thru the wall studs and leave the coils up in the floor trusses until I'm ready for them. I'll leave enough in the panel, cap the wires and coil them up inside the panel for later.

Thanks for all the help guys.