Mark,

Proper Inverter STRSW machines typically run off of 80amp 3 phase power and produce very high power, short duration welds. Overheating of UHSS causes it to be brittle, so keeping the heat affected zone to a minimum is critical. I have gone in to train a technician on a welder, and shut the whole body shop down because they didn't have enough power in the box. I've had to ask power companies replace transformers, because they couldn't deliver enough power. The actual amp draw on the circuit well exceeds the breaker rating, but since it's in such short duration and low duty cycle, they don't trip. The new machines monitor the weld and vary upslope, downslope, and amperage a few hundred times a second. These machines are in the $20k+ price range, and they are becoming commonplace in the auto body industry. If you have a solution that is as effective and cheaper, you're sitting on a gold mine.

The magnetic field in the 1 1/2" thick, water cooled cables is so great that they "kick" apart a few inches for the 1/10 second the inverter hums.

http://collision.alldata.com/online2...RIB-174-W.html
http://aaspma.org/tech-tips-september-2012/
www.Prospot.com

I know I have a low post count, and I just bought my first TIG from you guys, but this is not my first time joining steel. I have just spent more time using a resistance welder than my mig or stick, as that was my profession. I do not work for any of these companies, and I no longer do any auto collision training, so I have nothing to gain by passing along this info. I just don't want to see people get hurt. At this point, I respectfully step away from this discussion.