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Old 03-11-2010, 09:15 AM   #1
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Wiring Detached Garage for 220v welder

This forum looks to me the right place to get some answers. Here goes,

I just purchase a Mig welder with 220v. The label on the welder states..Standard NEMA 6-50P 50Amps 220 volt. 220VAC Single Phase. Use 50 AMP Power Source with 6-50R.

In the main garage I have a 200 AMP panel. From the main panel to the "sub-panel", I have 4-#6 wire (Red, Black, White, and Green) The Red and Black is attached to a 50 amp 2 pole Square D circuit breaker. The 4-#6 wires run in a 1-1/2" gray conduit two feet under ground some 23 feet total to the "sub-panel" in the detached garage. The sub-panel has 6 shots for breakers.
I have four of those with 20 amp breakers for lights, garage door openers, etc. The two open slots will be for the 50 amp 2 pole breaker for the Mig Welder.

Here's what I have so far. The plug on the welder power cord in 3 prong 6-50P with red, black, and Green/yellow stripe (ground). I have the wall box with a 6-50R (receptacle. I intend on running 3#6 wires (red, black, green) from the 50 amp 2 pole breaker to the 6-50R (receptacle).
Question> Is this the correct way to complete the setup?

Thanks for your expert advice.


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Old 03-11-2010, 09:24 AM   #2
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Wiring Detached Garage for 220v welder

Sounds good to me.
You could change the breaker in the main to 60 amps if needed.


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Old 03-11-2010, 09:47 AM   #3
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Wiring Detached Garage for 220v welder

You could use two #6 for the hots and a #10 for the equipment ground(green).

Last edited by brric; 03-11-2010 at 09:59 AM.
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