At weldclass we recognise that many operators especially in rural construction and maintenance industries have the need to run their welder off a generator.
Running arc welder off generator.
I use the 240 volt 20 amp outlet mates with nema l14 20p.
The arc voltaqe is on the order of 30 volts when your welding stuck shorted it s zero and thats when the generator gets real unhappy.
Also there will not be adequate heat input to the work resulting in low weld quality poor fusion and poor bead appearance.
After that it is the same as normal.
I would avoid running any of the new computer controlled mig or tig stuff off a normal generator.
To successfully run your ac dc 225 125 welder you would need a minimum of a 15 000 watt ac generator.
The biggest problem i had was adapting the generator to the welder plug.
Weldforce machines by weldclass are specifically developed with generator use in mind and have a high level of protection against voltage fluctuations.
The generator is breaker protected.
You can run a small inverter welder off of a moderately sized generator as they only draw about half the amperage of a comparable transformer based welder.
You strike an arc then have to maintain it really tight while the genny sees the load and revs up.