You mean the insulation isn't labeled? I can easily label the circuit of that's what you're referring too. If you don't mind showing me the nex article you're referring too
It has to do with UL. The individual conductors in NM are not 'listed'.
I did not know this.. thank you! I'm on a hunt looking for more information on this. Would you know where I can find it in 2023 nec?
I'm thinking the same thing.
Cross section in the wireway is the area where all the conductors cross paths?
Use some 3-2 or even 4-2 reducing washers to cover the holes left by the partial KO's
Or just make that some one else’s issue and inform owner how to make it look pretty and leave. I’ll frame if I have to but I want to move to next job
Yes, let's say you put your nipple to the far left or right of the panel. You would have 40 CCC's at the cross section where the cables enter the nipple triggering derating. If that happens you cannot use a single nipple.
I believe @Greentagger is referring to the existing service entrance conductors being Underground Service Entrance (USE) conductors (or cable) 338.12(B), USE is often dual rated as RHH / RHW-2 so it can be direct buried outside of a building (230.6) then transition to a raceway when it enters a building as RHW-2.
The code article they are referring to is 310.10, many inspectors say that when you strip the insulation off the NM or MC cable is is no longer a 'cable' your not using the cable wiring method anymore its now just wire that your using in a raceway wiring method and you need a wire type listed in 310.10 for the application.
That would be my thoughts & preference, but I'm not the one throwing red tags.
My interpretation is if you start off starts as a cable type wiring method (NM, MC SER), you may transition into a raceway with the sheath stripped off to the first termination, does not matter where you start or how. The ampacity for the stripped 'cable' is still based on 334.80, and also the normally dry location 334.10(A) so you cant strip it then say go underground in PVC.
I have just screwed a 4S blank cover to the top and punched through both.
This entire concept is dumb. Why not require the conductors in NM cable to be marked? Many MC cables already use conductors with surface markings.
My opinion is that each point on the circuit between enclosures has a well defined wiring method which should be determinable locally, just by looking at a cross section of installation. If that cross-section is conduit and individual conductors, no cable jacket, it's not a cable wiring method at that point.
