First posting - been lurking and see that there's a lot of good knowledge out there.
Here's my situation. I have a Lincoln ProMig 140 wire feed welder that I need to operate off a generator up at the farm. The specs for this welder refer to 19.9 volts at 90 amps, but the welder theoretically will put out 140 amps. I would like to purchase one of the Chinese generators sold by Pep Boys, etc. that are in the 3000-3500 watt range (an alterior motive is to use it with my little RV, so I don't want to get too large a unit for me to handle).
Has anyone run a small wire feed welder off one of these generators? Would the 3000 watts be enough? The gensets I'm looking at are capable of putting all their wattage and amperage into one duplex 120 volt outlet, which means a possibility of getting almost 30 amps if you use an RV type outlet and plug. My welder operates fine off a 15 amp garage circuit and the power plug is a 15 amp instead of the 20 amp plug with the blades set at right angles.
Also, do these small wire feed 120 volt welders operate around 20 volts output regardless of the amperage setting, or does the voltage vary with the amperage? Please excuse the ignorance. I'm a newbie with the wire feed unit.