said by nunya:
To answer your question and a few others:
The biggest issue is de-rating. These are all power circuits.
The circuits would all have to be derated 45%.
Judging from the neutral count, it appears something went horribly awry as well.
All mwbc's must be grouped and properly identified.
Ordinarily there would be several smaller conduits leaving the panel; rather than 1 giant conduit.
The other conduits you see are from the vanilla box (lights, sidewall outlets, HW, emergency lighting, 1 HVAC RTU.
While there is no "set" color code, when established it should be followed. The feeder coming in is tagged out properly ABC Black Red Blue. (This is a common 120/208 3 phase service)
Finally, poor workmanship in and of itself is a code violation. When all else fails 110.12.
Thanks. WI did not require derating until some time after 2002, I think. I've got a couple of conduits with multiple MWBCs but they are grouped ... which is also why I have both white and gray for the grounded.
At one place where I lived in the 90s, they ran all the NM-B through a single 1-1/2 or 2" conduit stubbed out of the top of the load center.--
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