Quote Originally Posted by travis View Post
i went and dug out my wire its black red and white i know white is n other two is power side and it will be in conduit from panel down a foot or so to my box with a 4 prong female outlet
where i work we have a elect on staff iam always asking him stuff i have wired a 220 hot tub and replaced my main panel all by myself and the house has not burned so far
OK

Is the 14-50 plug you have molded on or can you take it apart? Since you only need three pins, you might just want to switch everything over to 6-50. It would make things pretty simple. If you do that just don't use the white wire in your cable. If you want to keep the 14-50 then you will need to install a 14-50 outlet with all four wires, not just three. On the other end of your cord, how are you planning on hooking that to the welder? If you're going with a 6-50 receptacle then as you said, just don't use the white wire at all, and insulate it.