will 12awg cable pass through a 3/8 inch hole?
no. 5 Audioholic Field Marshall Oct 17, 2007 #4 You have 0.375" to work with, a single 12 gauge wire is 0.08" in diameter (not counting insulation), so assuming the insulation isn't too thick it should be OK.
You have 0.375" to work with, a single 12 gauge wire is 0.08" in diameter (not counting insulation), so assuming the insulation isn't too thick it should be OK.