Braehill wrote:Rick,
How does the 3 welders in parallel work? Does that take you to 270 amps? Do you then set each at say 30 amps to get a 90 amp output? Just curious.
Len
Hi Len... yep - all as you said.
I only tried it on stick - although I suppose I could try it on Tig.
Each welder is rated at 80 amps stick and 100 amps Tig.
On stick, the most I could get was 70 amps - as measured with a DC clamp-on meter.
Frankly, 70 amps output was just sufficient to run 3/32" 6011/10, 6013 and 7014 but not 7018.
On stick, the output voltage was stated to be I think it was 22 volts... quite low to think about paralleling.
I tried paralleling two welders and measured 140 amps output on stick - both welders set at max.
With two welders and 140 amps max, it was way better: I could run 1/8" in all the above electrodes but not 5/32" 7018.
When I got the third identical welder, I tried paralleling the three and measured 210 amps output with stick.
With three welders, I could easily run 5/32" 7018 at 160 to 180 amps.
The only limitation was/is that with the low 22V output voltage, you can't draw a long arc - that's OK on steel but when stick welding aluminum it's really limiting as you really need a higher voltage machine as the arc length varies rapidly.