An amp is an amp or is it? Hi all. I'm having a tough time figuring out if say a mig is delivering 125 amps through .030-.035" wire and a tombstone dc arc welder is delivering 125 amps through a 3/32-1/8" rod, is it the same thing???

After all each is delivering 125 amps but one is able to do it through a much thicker medium, so is it actually hotter?

In addition to this is an AC welder delivering 225 amps the same as a DC welder delivering say 112 amps? If not why do most A/C -D/C machines seem to halve the D/C value? Why don't they both supply 225 amps in both A/C and D/C?

Just a few things I have been pondering, who's got the answers, if there are any? Uncrichie.

After all each is delivering 125 amps but one is able to do it through a much thicker medium, so is it actually hotter?

In addition to this is an AC welder delivering 225 amps the same as a DC welder delivering say 112 amps? If not why do most A/C -D/C machines seem to halve the D/C value? Why don't they both supply 225 amps in both A/C and D/C?

Just a few things I have been pondering, who's got the answers, if there are any? Uncrichie.

## Comment