On 07/21/2014 06:43 PM, wrote:
On Mon, 21 Jul 2014 15:30:28 -0700 (PDT), wrote:

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.

Get one of these

http://www.harborfreight.com/knockou...kit-91201.html





I agree, I'd punch it out.



(sorry if you got an email, I hit the wrong button)