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leboyd 03-18-2006 02:26 PM

220v from 110v
I have a portable 220v 50a welder. Generally, I disconnect the electric dryer and run the welder through the window of the laundry room.

It recently occurred to me that I might be able to join two incoming 110v 30a outlets for the power. If I take in the input from 2 different areas of the garage, I will have the amps available.

I would make a 12g extension cord with two 110v males to the 220v female for the welder.

Does this make any sense?


Rehabber 03-18-2006 02:41 PM

ABSOLUTELY NONE This would be a violation of code and inherebtly unsafe -- It would probably be a relatively simple job for a licensed electrician to a wire an outlet and add a subpanel if necesary

leboyd 03-18-2006 02:44 PM

Yep, it's not a big problem to add the 220v plug in the garage, and I figured that would be the only way, but just wnated to check before I didn.


Speedy Petey 03-19-2006 06:58 AM

I just wonder why you though a 30 amp circuit would be OK for a 50 amp device, and also why #12 would be good for EITHER?

Run a new 50 amp 2-wire, with ground, circuit to where the welder will be used. It's the ONLY safe and correct thing to do.

leboyd 03-19-2006 12:57 PM

I obviously wasn't clear enough in my thought process. Picture two extension cords ending at one 220v plug. Each cord would be plugged into a 30a outlet on a *different* circuit.

leboyd 03-19-2006 12:57 PM

And ur right, the 12g wouldn't work. It would take 8g.

jproffer 03-19-2006 08:51 PM


Picture two extension cords ending at one 220v plug.
That would only work (unsafe as it may...or if the two cords came from opposite phases in the panel.

AND....if one breaker tripped and the other didn't, you're running a 220 welder off of 110 power. Few minutes of that and you now you have a $1500 (or however much it was) door stop...and a bunch of welds that aren't really welded...just...:rolleyes:

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