My house has a older panel that I am running a 1/0 SER cable to my garage (attached by a breezeway, with a attic).
My problem is running the SER cable to the BACK of the already installed main panel (running to garage for a sub panel) I have cut out the drywall behind the panel (which is outside and set into the t1-11 siding).
I am dropping the SER from above into the wall cavity behind the panel. There is only one spot to put in the cable, and it's in the back. There are no spots on any side.The panel is 30 years old and is one box, with a separator and the meter on the left, with the main line coming through in the center left.
My question: There is only two inches between the back of the panel and the drywall, so a LB will not work. Can I run the individual lines through the punched out 2" hole and not use an LB?