The Forney 140 MIG uses a Tweco style torch and uses Tweco #1 consumables for <200A machines and Tweco #2 consumables for >200A machines.
No, stainless steel requires gas to weld. The 125 FC (Flux-Core) does not use gas. We recommend Forney MIG machines for welding stainless steel.
We recommend Forney ITEM# 42298, ER308L, .030″ x 2 lbs. Stainless Steel MIG Welding Wire.
This machine should be fine to run on a surge protected outlet. You will want to make sure the rating for current on the surge protection outlet is at least 25 amps for this machine or it could damage the surge protector (depending on the type of surge...
This welder requires a minimum 3500-watt generator to operate properly.