Talk:Miller XMT 304 CC Welder

on Nov. 2, 2013 Fitterdave said:

> and a miller 304 cc is now at the space(on loan from me) dropped off near tuckers saw, I use these on the job. It will TIG weld carbon steel and stainless. Not AL. It needs to be wired up. I am told that docs can be easily obtained on it. I do know it is wired currently for 220 single phase, with the red cable as the lead(?) I am not an electrician.......I need the help of one. It also needs the extras, right now it is just a base unit. Contact me by e-mail for any serious concerns.

on Nov. 8, 2013 Michael Skilton said:

> I noticed that the plug on fitterdave's tig welder is not wired in accordance with standard practice. The plug is a 3 wire 240v and It is wired with both white (neutral) and green (ground) going to the plug. Standard 3 wire 240v wiring would be red, black, white. Or black, black, white. It may be that the cord on his machine is wired oddly and this is the correct arrangement. I suggest that the machine not be used until the wiring is verified as correct. I'm putting a note on the plug as well. If I have time I will look into it tomorrow.

On Fri, Nov 8, 2013 at 4:17 PM, Ryan Pierce <rdpierce@pobox.com> wrote:

I was the person who wired it. I believe it is correct. Check the manual, linked in the wiki page.

It is a weird beast that can accept single or three phase power, and multiple voltages. It auto detects. And white is NOT neutral. It doesn't have a neutral. You wire white and black for split phase 240V and leave red disconnected. For three phase, you wire white, black, and red. Green always goes to ground in both cases.