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Thread: Extension Cord

  1. #1
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    Extension Cord

    I recently purchased a Lincoln Pro 180 Mig welder. I would like to make an extension cord for it . My garage is wired with a 40 amp 220 plug for to run this welder ,and my older Miller 225 Amp.Thunderbolt . 40-50 feet is what I'd like to have. Is this doable with that machine ,and the garage wiring. Also is there a wiring diagram I could find to make up this extension cord ?? .
    Last edited by weldaholic; 09-16-2020 at 12:36 PM.

  2. #2
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    Re: Extension Cord

    It used to be cost effective to build yer own but by the time you buy the proper cord and connectors you'll be close to an off the shelf one with molded ends.


    This one is reasonable 50' $119.00

    https://www.badassextensioncords.com...BoCxysQAvD_BwE
    Ed Conley
    http://www.screamingbroccoli.com/
    MM252
    MM211 (Sold)
    Passport Plus & Spool gun
    Lincoln SP135 Plus- (Gone to a good home)
    Miller 125c Plasma 120v
    SO 2020 bender
    Beer in the fridge

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  4. #3
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    Re: Extension Cord

    If you do decide to make your own:

    The cord will have white, black and green wires>

    White- Hot1
    Black- Hot 2
    Green- Ground

    Cord- SJO cord 8/3


    Male connector is easy to find at box stores. 6-50 P (Plug)

    Female end: you will not find the proper cord connector because they are really Wall Mount boxes and not designed to be at the end of a cord.

    You would need to buy a box and then mount a receptacle in that box.

    Forney does make a cord connector:

    Forney 58401 Electrical Receptacle, Pin-Type, Portable 50-Amp, 250-Volt,Black around $25.00
    Ed Conley
    http://www.screamingbroccoli.com/
    MM252
    MM211 (Sold)
    Passport Plus & Spool gun
    Lincoln SP135 Plus- (Gone to a good home)
    Miller 125c Plasma 120v
    SO 2020 bender
    Beer in the fridge

  5. #4
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    Re: Extension Cord

    Quote Originally Posted by Broccoli1 View Post
    If you do decide to make your own:

    The cord will have white, black and green wires>

    White- Hot1
    Black- Hot 2
    Green- Ground

    Cord- SJO cord 8/3


    Male connector is easy to find at box stores. 6-50 P (Plug)

    Female end: you will not find the proper cord connector because they are really Wall Mount boxes and not designed to be at the end of a cord.

    You would need to buy a box and then mount a receptacle in that box.

    Forney does make a cord connector:

    Forney 58401 Electrical Receptacle, Pin-Type, Portable 50-Amp, 250-Volt,Black around $25.00

    Thanks, I am finding out its going to be cheaper to buy one ready made , found a 40 footer on Amazon for 76.95 , 8 gauge cord. I actually found the three prong female for an extension cord on Amazon , along with the male end also , about $35 for the pair , but the 8 gauge cord for 50 feet will be nearly as much as the ready made 40 footer .

  6. #5
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    Re: Extension Cord

    You have a link to the connectors you found on Amazon?

    Just curious.
    Ed Conley
    http://www.screamingbroccoli.com/
    MM252
    MM211 (Sold)
    Passport Plus & Spool gun
    Lincoln SP135 Plus- (Gone to a good home)
    Miller 125c Plasma 120v
    SO 2020 bender
    Beer in the fridge

  7. #6
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    Re: Extension Cord

    Quote Originally Posted by Broccoli1 View Post
    You have a link to the connectors you found on Amazon?

    Just curious.
    You were correct , I needed to look at them a little closer ,yes they are wall mount. Kinda of crazy you can build one end ,but not the other without a box .

  8. #7
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    Re: Extension Cord

    Quote Originally Posted by Broccoli1 View Post
    You have a link to the connectors you found on Amazon?

    Just curious.

    Pretty crazy you can buy the extension cords with the molded ends , and you can buy the male end if you needed to replace it, but not the female end .

  9. #8
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    Re: Extension Cord

    You will staying with all same plug will same money. The 6-50 is standard for most shops.

    Dave

    Quote Originally Posted by weldaholic View Post
    I recently purchased a Lincoln Pro 180 Mig welder. I would like to make an extension cord for it . My garage is wired with a 40 amp 220 plug for to run this welder ,and my older Miller 225 Amp.Thunderbolt . 40-50 feet is what I'd like to have. Is this doable with that machine ,and the garage wiring. Also is there a wiring diagram I could find to make up this extension cord ?? .

  10. #9
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    Re: Extension Cord

    They are available, but not cheap.

    Straight-Blade Connector
    Grounded Three-Slot Socket, NEMA 6-50, Gray

    https://www.mcmaster.com/7120K83/

    Name:  7120k83-@1x_637261834733984237.png
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    I often remove temporary service circuits when permanent circuits are installed. The SJOXXX cords !0/3, 8/4 ,6/4 sometimes up to 100ft. are considered waste when they are no longer needed. I have kept a few over the years, and made my own. If I had to buy the cord, then pre-made would be the better deal. I think Leviton , Hubbell, ArrowHart, and Bryant all make a version of this. Not many electrical supply houses keep them in stock. If its a good 40A 240v circuit you shouldn't have any trouble running a Lincoln Pro Mig 180 .

    Good luck
    Airco 250 ac/dc Heliwelder Square wave
    Miller Synchrowave 180 sd
    Miller Econo Twin HF
    Lincoln 210 MP
    Dayton 225 ac/dc
    Victor torches
    Snap-On YA-212
    Lotos Cut60D

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