When the house was built, 3 radon pipes were installed between the basement and the attic. They are 6" PVC plastic are completely within the walls of the home except for their ends. Only one of them is used by the radon sub-slab system.
I need to get get some 120 volt electrical wiring between my attic and basement. Can I legally repurpose one of the radon pipes as an electrical conduit? I'm located in New Hampshire, United States. I'm not sure what the electrical code would say about doing so.
If I can do so, do I need to use a flexible electrical conduit within the radon pipe, or can I just run the Romex through the radon pipe with no additional shielding?
Best Answer
It depends. The pipe is not listed as a wire way or conduit so it would not be allowed for individual conductors you know that by your question.
If you limited the number of cables using MC for example it could be allowed. However more than 6 current carrying conductors may be flagged since it is basically just a hole not a listed gutter.
Would I do it as a professional? Yes even with NMB if I cut the pipe so it is completely enclosed in the wall.
Code allows wires run in walls with the finish or covering and doesn't require stapling. This is even safer for NM, or MC wire types than just in the wall but since it is not a wireway we have to limit the number of conductors and use cables that can be run in the walls, then limit the number so the inspector won’t call out bundling.
Fire block may be required to plug the openings since this bypasses all blocking.