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Thread: What size 220V Wiring?

  1. #1
    Senior Member Bdub's Avatar
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    What size 220V Wiring?

    Ok guys, I need some help with wire size. I'm running a new 220V wire from my basement to the garage for my LC-520D. Reading many of the threads, it looks like 220 is the way to go. I have a good piece of 10g, but I'm wondering if I really need 8g. My run is approximately 35 feet. Also, what size breaker should I use? Thanks in advance.

  2. #2
    10 should work, it is rated to 30 amps.
    Units owned Longevity PROmts 200

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  3. #3
    Moderator KHK's Avatar
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    #10 wire and a 30 amp breaker.
    keith
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  4. #4
    Senior Member Bdub's Avatar
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    Thanks Guys........I really appreciate your expertise.

  5. #5
    Senior Member Bdub's Avatar
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    Got my wiring done. Made a couple of simple cuts with my Plasma Cutter. All is well.

  6. #6
    Cool, be sure to show some of your work.
    Units owned Longevity PROmts 200

    Force Cut LP80 plasma cutter
    Longevity auto dark welding helmet

    Atlas 10x36" lathe
    Craftsman 5HP 30 Gal compressor
    Home made CNC router/plasma/hot wire foam cutting, 3D printing table powered by Longevity Force Cut LP80
    Home built aluminum foundry, HF 4x6 bandsaw

  7. #7
    tomsign
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    Bdub, glad to hear you are all up and running. would like to see some of your work
    Tomsign

  8. #8
    I just had an electrician come out to install a 220. He refused to wire with anything but 8 gauge. Im sure gadget Knows what he is talking about. #10 will work.
    Respectfully, Kyle
    Longevity LP50 Plasma Cutter
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  9. #9
    Here is a link to a wire size calculator that is within code. Pretty slick calculator.

    Wire Size Calculator
    Units owned Longevity PROmts 200

    Force Cut LP80 plasma cutter
    Longevity auto dark welding helmet

    Atlas 10x36" lathe
    Craftsman 5HP 30 Gal compressor
    Home made CNC router/plasma/hot wire foam cutting, 3D printing table powered by Longevity Force Cut LP80
    Home built aluminum foundry, HF 4x6 bandsaw

  10. #10
    Senior Member Arcamm's Avatar
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    There are a lot of things that effect the size you should use, like the length and load type. A given wire size has a rating and 10 will carry 30 amps. If your run gets too long, you need to go up a size. It's OK to go too big, but not too small. You have to match the breaker to the wire size. You can use a 30amp or less on 10 wire, but not anything larger.

    If your electician would only use 8, either it was a long run, he figured it would pull more than 30 amps on startup or he a bunch of 8 on his truck he needed to use up.
    Weldall 200PI, Longevity Pro auto-darkening hemet, HF 120amp stick welder (retired), Quincy 60 gallon 5hp air compressor, Iron Mike power hack saw, HF 42144 3-in-1 , 20 ton press, and a screw driver but I'm not sure where I left it...

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