I have a Hobart 140 welder. The outlet it plugs into is a 14 gauge wire on a 15 amp breaker. As you can guess, I have blown the breaker a few times. I know the breaker needs to be changed to a 20 amp, but what about the wiring? I am thinking about changing it to 12 gauge, but one guy said it would not hurt to go to 10 gauge. Any thoughts?