I have a mm140 I am quite happy with. Use it in my Home/Shop, plug it in anywhere, welds like a banshee. Today I borrowed my dads old Honda EM3000 generator to go out and repair/replace some pipe fence. Low and behold it wouldn't weld worth a %*^(. I'm not an electrician but I thought that generator would power it fine. Guess not.

Any advise on what minimum/adequate generator it would take to power that welder.