220v circuit/MIG welder question

[jaybee]

As I'm adding a 220v circuit for my new air compressor I'd also like to add a 220v receptacle for a possible MIG welder in the future.  What sort of amperage should I allow for to run a hobby welder that's capable of auto body and possibly occasional frame work at say, .125 thickness?

[Mac]

Welding .125 is well within the capabilities of even a 110V machine, so you're not talking a very heavy duty welder. Still, welders will vary in amp requirements from one make / model to another. Your best bet would be to surf around and find the aperage specs for a unit you think might be one you'd shop for in the future.
In my shop I have a cloths dryer / kitchen range type 220V outlet on a 30 amp breaker that my compressor is plugged into with a dryer / range type cord and plug. I use the same outlet for my 220V Lincoln AC/DC arc welder. I'm a solo act so I don't need them both on at the same time.

[crdnblu]

Based on HTP online specs, a 30 amp, 220 volt breaker will support up to, & OVER  welding on .125 inch thickness material.  A 25 amp circuit will typically support UP TO .125 inch material.

[jaybee]

Thanks.  My wiring is perfectly adequate for 30a so that's probably what I'll do.