PP50 cuts off at 50 amps...Now it gets it's own thread.

[performance]

Google electrical phase angle. They don't have the same as regular power due to their rotor design, especially the 3 phase units. The additional issue is if you have wye or delta (don't know on MIller units), but if you measure from from leg to ground, you may find one leg is actually a hi leg but measures from leg to leg as 220. This unbalanced condition can create issues in some electronics.

[sticks]

I know when I was initially checking the output of the 240 outlet on the welder, I was getting 120v from each leg to ground. I'd have flagged it for replacement if the legs were reading different (I so want this thing gone).

I Googled Electrical Phase Angle, and could not find anything that I could understand. My education only went so far. If the difference between the two legs is less than one volt to qualify for a different phase angle...it may be there. Maybe today I will get my scopemeter hooked up to it to watch the sine wave for each leg.