I have not found any information and answer on this. My question is, can I bring a Romex cable from one side of a ceiling joist to the other over the joist face? All I can find is related to something that's obvious (the red line denotes Romex cable, the white ones cable staples/clamps):
This case is clearly not allowed because we are running Romex from joist to joist. A running board would be required (see NEC 334.15).
However, what I am asking is the following scenario:
I have a Romex cable on one side of the joist but need to bring it to the other. I explicitly want to avoid drilling through the joist. And a 1-2" "running board" to cross the joist makes no sense, of course.
I don't think this case is really covered by NEC 334.15 ... which covers the case where a cable is actually ran (as in the first image) ... not just an inch joist crossing.
My actual use case is that I have a junction box mounted on the right side of the joist but the hole into the ceiling for the cable is on the other side of the joist. I have asked this as part of Can I put a metal junction box on the side of a joist and run a cable across the face to the other side? but this part of the question was not addressed.
