Hello there

Thank you all for the tip and information. I appreciate it.
I was able to put it to work this morning by put black wire and white
for hot wire power (flat blade) and the green for ground (round
prong). both TIG torch and Arc stick work just fine. This time when I
power on the cooling fan run strong not like last time when I miswire
and put the green for one of the flat blade. The Fan still ran (about
30% slower) and power red LED on too. and TIG made small arc unusable
like someone here said ,

..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).

lucky me I didn't fry it. I was able to practice some weld and burn
holes in the steel pipe and ruin some piece. but from now I have a
working unit and need some practice.

The last time I tried to weld some steel was 15 years ago, when I
bought an oxygen tank and took my mother propane cooking tank from her
kitchen and gas weld it. The weld broke with just a hand twist. since
then discouraged me.

It's easy to become a fool when jump into the field that you're not
good at or have knowledge of. Much like a race car driver who have no
idea of how transmission works (from one of Tom Cruise's movie) , or
an rocket engineer in his mother's kitchen.

I've been doing jewelry work for the past 14 years. welding platinum,
soldering gold melting silver and some metal casting. but when it came
to steel and aluminum...?#$%! they are some new friends to get
familiar with.

Thank you

sunnyboy