Welding ground...don't do this!

Uh, no............

The current that goes through you is what kills you but it is DRIVEN by voltage. And "most welders" are not necessarily 20V, either. My mig on higher settings is something above 40 or so, and many stick welders are up around 80V or so open circuit.

My 20 yer old Miller 350 CC/CV MIG puts out between 19 V and 35V DC at 100-350 AMPS. I run it off of 240V AC. I have gotten between a bad ground connection and the stinger a few times and YES if hurts.

Its a Constant Current and Constant Voltage CC/CV with a read out screen.

So NEVER high Volts from my MIG.

Yes Voltage is the driver for AMP's. But I am a retired IBEW member and have forgotten a lot of **** since schooling but still have my older NEC books to look up crap.