Hi, I just got my new mig welder that runs 220V/20A input, current type-single. In my garage I have outlet for 220 which I use for arc welder that has three wire two hot and one for ground. New welder came without plug on it but it also has three wire (white, black and green). I connected new plug that fits my outlet used white and black as a hot and green as a ground. When you turn welder ON you can hear cooling fan working, when you press trigger welding wire is coming out like it is supposed to go, there is light working on the ON/OFF switch, but when you want to start welding no sparks, no nothing. So my question is what is wrong I was thinking that welder is not working I took it back exchange it I got new one same thing, that means something else is wrong. My outlet is connected to panel and to the 40AMPS fuse, is that a problem because on welder it says 20A input or what else could be or maybe I need one hot, neutral and ground but in that case is it 220V . I would like to find out what is wrong this so if you

Being a welder myself, Im going to ask a STUPID question. Is the ground cable hooked to your work/table from the machine? Is it good and tight AT the machine. I have forgot my ground clamp a number of times. Just a thought and like I said it was a stupid question.

Yes the ground cable is hooked to my work/table from the machine