How to Wire an Outlet for a 220V Welder | Hunker For some detailed home wiring projects like a circuit breaker, hiring an electrician is suggested; but for small jobs like wiring a welder outlet, with the proper safety precautions and directions you can install a welder receptacle with just a few tools. How to Wire a 240V AC Outlet - instructables How to Wire a 240V AC Outlet: We were given a welder that has a big 240 volt plug, but our home doesn't have any 240V outlets already wired. What to do? Wire your own! Turns out the plug we had is NEMA 6-50. You can probably figure out what yours is from a chart. If it's clo..