100 amps deserves to be treated with respect, yes. Just try and break the circuit and you'll see why. It's basically like a welder. I did some welding a couple

100 amps deserves to be treated with respect, yes. Just try and break the circuit and you'll see why. It's basically like a welder. I did some welding a couple weeks ago, right around 100 amps. The output voltage of that machine is probably less than 48 V. Still makes a very pretty arc. :)