[oil pan 4]

You dont need 440v power to run a home hobbyists welding machine.
Only really powerful machines can run 440.
If you can use an electric clothes dryer or electric cooking range you have more than enough power capacity to run any normal welding machine.
Welding generators are very expensive since they have both high voltage and low voltage arc welding windings. But 120 and 240 standard generators make poor power supplies for welding machines unless they are grossly over sized. A 2000 watt generator wont power welding machine that needs 2000 watts, not even close, I already tried it.

I have a sorry old 100 amp power service connection and use a fairly good size 230 amp arc welder no problem.

I have made very long, very heavy power cords for both standard 120 volt and 240/120volt power to avoid running the generator, because gas is expensive.