Your title says NM in conduit, but your question seems to be different. If you're asking if you can run the NM through the basement without conduit, then yes you can. If the basement is open, you can strap the NM to the underside of the floor joists. The NM just needs to be secured and out of the way of physical damage.I have to run #6 NM through the basement 50 feet through block transition to PVC for 30 feet up in garage panel. Can I run the #6 NM all the way? Or should I run THWN through conduit to garage?
Underground is a wet location so NM would not be allowed based on thatI quess my question is what your opinion on running #6 cable in conduit underground for 20 feet.
Would need U.F. for that portion.No the conduit is under concrete side walk.