Hi, I'm running a 6-3 Romex NM-B with ground for my new air conditioner system. My main panel doesn't seem to have any spare (unoccupied) 3/4" size punch outs left; but there is a 1/2" punch out. It is possible for me to fit this 6-3 with ground in there, but does anyone know whether this is prohibited by the NEC? All advice (and NEC references) appreciated! Regards, Theodore.
- posted
9 years ago