A few days ago I asked an electrician if I could run cable through conduit – he gave me a funny look and said “No, Romex is not allowed in conduit.”
When I searched online, there seems to be a wide belief that Romex cannot be run through conduit, but no one can find the code which states this. See for example here, here, or here. However, in many other places it’s stated that you can, for example here or here. And here, someone claims that the NEC says it’s only allowed if explicitly stated in local code!
So, which is it? Can I run Romex through conduit!?