Electrical Outlet For Welding

Discussion in 'Electrical Forum discussion & Blog' started by willplunk, Aug 13, 2008.

  1. willplunk

    willplunk New Member

    Joined:
    Aug 13, 2008
    I have a Chicago Electric ( China) welding machine. It's a Dual Mig 131, Rated AC input 120 volts, 1 phase, 60 hertz, 21 amp. The electrical cord has a regular plug with 14AWGx3c wire. Can I install a 30 amp breaker in the main panel, and come off to a 30 amp receptecal. Then use a 50' extension cord to work outside. Would 12/3 wire be OK for the cord or would I need 10/3. Would this work OK? Any advice would be greatly appreciated. Thanks, Will
     
  2. Chris75

    Chris75 Electrician

    Joined:
    Aug 12, 2007
    Occupation:
    Electrician
    Location:
    Litchfield, CT


    is the cord on the welder a factory cord? if so, thats the voltage and amperage you have to use.
     
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  4. willplunk

    willplunk New Member

    Joined:
    Aug 13, 2008
    Yes, the 14AWGx3c stamped on the welding cord is the factory cord, The welder is new and has never been used. The 21 amp input confuses me as 14/3 is not rated for that much, right. The wall sockets are 15 amp, so I couldn't use them. Any suggestions and thanks Chris75 for the reply. Will
     
    Last edited: Aug 13, 2008
  5. Bob NH

    Bob NH In the Trades

    Joined:
    Oct 20, 2005
    Location:
    New Hampshire
    The specs on most of the homeowner style welders show a fairly low duty cycle. Try the welder on a 15 Amp circuit and see if the breaker holds.

    You may want to get a 20 Amp circuit to minimize voltage drop.
     
  6. Alectrician

    Alectrician DIY Senior Member

    Joined:
    Jun 15, 2007
    The #10 wire cord will work much better than the #12.

    I have a 120V lincoln wire welder and it needs all the juice it can get. I can see a difference in performance when I use a long #12 cord vs no cord. It still works and doesn't kick the breaker but it's not as "hot" and doesn't penetrate properly.

    20 amp breaker will hold but use #10 conductors and cord.
     
  7. Southern Man

    Southern Man DIY Hillbilly

    Joined:
    Jun 27, 2008
    Location:
    North Carolina
    "They" probably rate a portable appliance pigtail quite a bit higher than electrical cable permanently installed in long runs within wood framing.
     
  8. willplunk

    willplunk New Member

    Joined:
    Aug 13, 2008
    Thanks Guys for taking the time to comment.
     
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