Quote Originally Posted by weldtex View Post
Can one safely power the 140 st off a quality generator equiped with AVR (automatic voltage regulator)?
We do not normally recommend running on a generator, as there are so many and some have really bad power out.

It should not be a problem, I would use the 220vac. And I assume with AVR you have at least 30 amps output. And make sure it has a nice sine wave out. What is the brand name on the generator?