This welder takes a significant current right when it is turned on, to
charge up the capacitors is what someone said. So you might have just
tripped the breaker rather than frying the unit, both times possibly.


"Bob Engelhardt" wrote in message
...
There are two possibilities: the worst is that the welder uses both 110
and 220, the 110 coming from 1 leg and ground. This isn't approved, but
might be. In this case, wiring green and white to the 2 flat pins would
put 220 on the 110 circuit and fry it. You have my condolences.

The other possibility is that the welder only uses 220 and the green wire
is for (case) ground only. This is more likely and mis-wiring is less
likely to damage the welder (it would result in 110 being applied to the
welder's 220 input). Less likely, but still possible. It is more
dangerous, though, as 1 leg (110) would be applied to the case and could
give you a shock.

Did the welder come with a diagram of the internal wiring? You could tell
from that if the green wire was ground only or used as neutral for a 110
circuit.

Bob