My "go to" machine is a 210 amp MIG welder that draws about 23 amps from the line wide open. My back up is a 235 ampAC/160 amp DC stick welder that supposedly draws 49.5 amps wide open but I've run it since I've had it on a 30 amp dryer circuit (I use 1/8 rods at about 120 amps DC). I joke about putting a 200 amp entrance service on a garage with a 100 amp drop to the house, but in reality, I think I'll be fine with 100 amps. It's a hobby, so I'm not on the clock.