I have installed a surface mount 125 A combination meter main. I have brought all my home runs, 14 of them, all except 2 are 14-2 NM cables through two 1 1/2" knock outs from the back into the panel with a chase nipple. Before entering the chase nipple all cables are stapled to the stud where the panel is mounted. NOW, here is my problem, the inspector now all of the sudden doesn't accept that (used to be accepted by him and others just weeks ago) tells me to run them through a gutter and no more than 2 NMs in a single connector and refers to article 312.5 in NEC.
I am hoping for help here, there are only few knock outs at the bottom of the panel, this a Murray 125 A surface mount panel (JA2442B1125SEC) and of course being a surface mount all are outside. My only other option is to have min. 7 knock outs in the back of the panel, that is to punch them, which might be another problem. The inspector could claim that I am not allowed to punch holes there. Siemens/Murray are of absolutly of NO help. I will think twice before using their stuff again.
How are you guys installing these panels with home runs or having NMs coming into them, they got place for 24 full size breakers. Somebody must have thought about this, it can't be that every of these panels needs a gutter. Again your help is very mich apprerciated. By the way the NEC referrence is the one on 2004.
PS: someone else had this question before but I couldn't find any answer to it.
"While pawing through the 1999 NEC (the one the county inspects to) I found that 373-5(c) no longer allows the arrangement in the current box, all of the NM cables coming in through a single opening with a bushing in the back of the box.
So two questions, please.
First, what is the preferred method for bringing NM loads into a box like this? 20 or so individual cable clamps seems bad, and I don't get how the exception for one or more 18" conduits into the top of the panel is supposed to work."