Welder wiring question
 

I was going to do some work on my 1811 with my new-to-me mig welder and the unit quit. I just bought it and it is a MATCO unit that they no longer sell. I cannot make out what the wall electrical requirements are from this picture and was wondering if any of you read foreign wiring diagrams. Does this show two hots and a ground or two hots and a neutral? Thanks
BTW, the colored wires are the welder's plug. If I ask this question on any of the other departments no one will see it.

It looks like it can be wired for 110 or 220 and shows the different wiring arrangements accordingly.

If you just bought it I'd ask the people you bought it from. If it is defective I'd want my $$$ back. You could or should also check with an electrician. We don’t want to have to start calling you Sparky.:biggrin2:

Looks like it is dual voltage. 115/230V-1PH.

The green/yellow wire is ground. Depending on the voltage you use, the other wires are L1 & N, or L1 & L2. If 115V, the Blue wire is Neutral

It's set up for 230 v and my outlet is a three slot two hots and a ground, not two hots and a neutral. I just wanted to be sure that my wall outlet was set up properly. One of the two 400 ma fuses blew and I am getting a replacement for it. It might be the fuse or it might be something else. I understood the diagram on the unit which shows two hots with the yellow/green as a ground but then they threw in all of the other stuff and it kind of confused me. Is there ever a set up where 230 v has two hots and a neutral?

Rudy, yes you could have 2 hots and a neutral but there will always be a machine ground. As Roland said you have 2 hots and a machine ground if your running it on 240 volts.

On 230V the Neutrals and grounds end up at the SAME PLACE.in the panel.

Whew
 

I finally figured out what was going on. You guys were right and so was the way I set up my 230v outlet but what was happening was that a little cooling fan that was mounted on a side panel, that I had to remove to get the unit in my truck, had pulled the two small terminals together when the panel was taken off.
every time I pulled the gun trigger it shorted out the 400 ma fuse. When I called the company that imported this unit into the US the number was.......you guessed it......no longer in service. It is a nice unit but man if I ever need parts I'm screwed. BTW, MATCO acted like it was not their responsibility to provide their customers with any kind of repair number or address. Something to think about when you buy from a middle man like MATCO. Once again thanks for the assistance. You guys are the best.:beerchug:
Roland, you and I think alike. I took the panel cover off to see if they truly are the same but the went to different lug strips. However they were both bolted to the same metal box with no insulation in between!
Sam, let's make that "Old Sparky"!

I think most modern 230V items have the ground and neutral tied together ONLY at the panel ...meaning a 4 lug plug but yes, this is the way to use what you have.

John

On the above diagram, there is nothing noted about needing a separate Neutral for the 230V application.