[legion]

My knowledge of electricity is limited.

I'm going to buy a GTAW machine that requires 220V @ 80 amps. The main breaker panel is in the house, but I have a sub-panel in the garage.

If I wanted a 220V socket out in the garage that could support the welding machine:

1) Would I have to have a new "line" run out from the main panel?
2) Could the work just be done at the sub-panel?
3) Is this something an electrician would have to see to determine?

I'm hiring an electrician to do the work no matter what, I'm just trying to get a heads up on what the required work will be.