I am finally getting around to running wires for my steam shower generator, floor hear and bathroom GFCI. I was flipping through a code book this morning and theres a picture which shows running 8/3 through the joists and >=8/3 stapled under. But I couldn't find anything in wording which described it.
Is there something in code against running larger cables through the joists? In case of my steam unit I am running 6/2.