HOW TO - make a 220V extension cord - Page 7
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  1. #151
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    Re: HOW TO - make a 220V extension cord

    I just did a cord too. I don't like the 4"square box as I am afraid the knockouts will get pushed in so I used a 2 gang bell box with a stainless plate the red dot number from HD is R21H32 3/4" three hole box for wet location. For a connector I got a Hubble bus drop connector (AKA a Kellems grip connector). It works like a Chinese finger trap to grip the cord. about $13 from an electrical supply house. you wont need to worry about the cord pulling out of this one! these fit 10/3 so and a 3/4' hub or knockout. to fit 8/3 you will need a 1" if not a 1.25" knockout or hub

    fred
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  2. #152
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    Syracuse
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    Re: HOW TO - make a 220V extension cord

    Quote Originally Posted by Norcal01 View Post
    Please note, the homemade extension cords in this thread will result in a OSHA citation if used on a site where they have juristiction & they show up, they do not like metal 4 square boxes on cords... The use of surface mount 30 & 50 ampere surface mount devices on a cord is a even poorer practice, 1st time someone drops it you have exposed parts making it a "Darwin award" in progress.


    Please do electrical work safely or hire a qualified electrical contractor.
    Link please.
    I find it hard to imagine there's actually a code they could point to, to back this up. I can see a poorly constructed cable as a violation, or a permenent installation of a temporary cord, but not simply "We don't like metal boxes."

    Properly constructed, it should be as safe as the metal box (welder) it is connected to.

    I'm open to being wrong, but if that's the case please provide a link so we can educate ourselves.
    ------------------------------
    Lincoln 175HD
    Lincoln AC/DC225
    Smith O/A

  3. #153
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    Oct 2007
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    New Hampshire
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    2,159

    Re: HOW TO - make a 220V extension cord

    Here's my new one....the outlet's are recessed so if it flips over it is unlikely the will be damaged. The box is welded out of 12 gauge steel.....the cover also. This is so the plasma and mig can stay plugged in.....I never use then at the same time.

    Jim
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  4. #154
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    Northern Cal., Shasta County
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    6,936

    Re: HOW TO - make a 220V extension cord

    What brand name of receptacles did you use in there Jim? I need something like that only closer to the source. A duplex pigtail would work for me too.

  5. #155
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    Apr 2009
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    Eagle, CO
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    22

    Re: HOW TO - make a 220V extension cord

    Hey guys, this is a great post. I just bought a Lincoln 180T refurb and I'm dying to get 'er going. I'm trying to make an extension cord to run from my dryer outlet, which is a 14-30 (4 prong, with an L) receptacle. I went to Lowe's and got the 10/3 and 6-50C for the other end, but they only had the 14-30P with pigtails attached for the dryer. I didn't think that wiring my 20' of 10/3 to the pigtails would be the safest bet, but haven't been able to find just the straight up 14-30 plug. Any advice on where I can find just the 14-30 plug, or if there's another way??

    Thanks.

  6. #156
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    Re: HOW TO - make a 220V extension cord

    Lowes has them but they are Universal so they probably have a Pic of it configured as a 14-50 on the shelf.

    "4-wire grounding 30 & 50A-125 / 250V
    For use with 4 wire range or dyer outlets
    Interchangeable "L" prong for 30Amp or "flat" prong for 50Amp"

    http://www.lowes.com/lowes/lkn?actio...P-L&lpage=none
    Ed Conley
    http://www.screamingbroccoli.net/
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  7. #157
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    Re: HOW TO - make a 220V extension cord

    Quote Originally Posted by Broccoli1 View Post
    Lowes has them but they are Universal so they probably have a Pic of it configured as a 14-50 on the shelf.

    "4-wire grounding 30 & 50A-125 / 250V
    For use with 4 wire range or dyer outlets
    Interchangeable "L" prong for 30Amp or "flat" prong for 50Amp"

    http://www.lowes.com/lowes/lkn?actio...P-L&lpage=none

    Broc, you are the man.

    So that one WILL work? Please confirm. I had a feeling....

  8. #158
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    Dec 2007
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    Re: HOW TO - make a 220V extension cord

    Quote Originally Posted by HDH View Post
    Broc, you are the man.

    So that one WILL work? Please confirm. I had a feeling....
    Don't see why not

    Heck ya don't even need to use the L
    Ed Conley
    http://www.screamingbroccoli.net/
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  9. #159
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    Eagle, CO
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    22

    Re: HOW TO - make a 220V extension cord

    Quote Originally Posted by Broccoli1 View Post
    Don't see why not

    Heck ya don't even need to use the L
    10-4, thanks. I'll head back tomorrow and get it done.

  10. #160
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    Apr 2009
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    Eagle, CO
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    22

    Re: HOW TO - make a 220V extension cord

    Hey guys, just wanted to say thanks to everyone, especially on this thread. I got my new Lincoln 180 up and running today without having to hire an electrician to install 220 in my garage, thanks to my trusty new extension cord (14-30 to 6-50). Look forward to talking to you guys more in the future as I develop my new skill.

    Dan.

  11. #161
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    Jun 2009
    Location
    RI
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    12

    Re: HOW TO - make a 220V extension cord

    Just wanted to chime in. I made one of these tonight and it works great. Finally got to see what my 211 can really do! Thanks for the great thread!

  12. #162
    Join Date
    Mar 2009
    Location
    Central Oregon
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    136

    Re: HOW TO - make a 220V extension cord

    Nice work Micro, only thing I would add to your demo would be to check the cable before plugging it in. I'd check for continuity between the wires with a meter one one end. Just a thought, it only takes a little loose strand or two......
    Millermatic 252
    "Don't worry, he's got a welder, he can fix anything"

  13. #163
    Join Date
    Jun 2008
    Posts
    132

    Re: HOW TO - make a 220V extension cord

    Quote Originally Posted by cnywelder View Post
    Link please.
    I find it hard to imagine there's actually a code they could point to, to back this up. I can see a poorly constructed cable as a violation, or a permenent installation of a temporary cord, but not simply "We don't like metal boxes."

    Properly constructed, it should be as safe as the metal box (welder) it is connected to.

    I'm open to being wrong, but if that's the case please provide a link so we can educate ourselves.


    http://www.osha.gov/pls/oshaweb/owad...ONS&p_id=20579

  14. #164

    Re: HOW TO - make a 220V extension cord

    Thank you,

    I just picked up a Riland 200 ac/dc pulse Tig. I finally got my cord made tonight and everything works great!!!!!! Now If I just knew how to Tig weld I would be al set. Lots to learn,

    Ron
    Just a bunch of worn out paid for Junk.

  15. #165
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    Jul 2009
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    hicksville,West Virginia
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    372

    Re: HOW TO - make a 220V extension cord

    I've subscribed to this thread in the advent I catch myself getting a 220V welder(besides the 110v one I'm looking at some dude called me and has a Millermatic 200 he wants to sell me,anyone got one and are they still good(over 20 years old?))

  16. #166
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    Dec 2007
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    Re: HOW TO - make a 220V extension cord

    Quote Originally Posted by GiddyWelder View Post
    I've subscribed to this thread in the advent I catch myself getting a 220V welder(besides the 110v one I'm looking at some dude called me and has a Millermatic 200 he wants to sell me,anyone got one and are they still good(over 20 years old?))
    Rock Solid machines- what is he asking $$
    Ed Conley
    http://www.screamingbroccoli.net/
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  17. #167
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    Jul 2009
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    hicksville,West Virginia
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    Re: HOW TO - make a 220V extension cord

    about $650? He responded to my want ad for a millermatic for $500 in the local trader rag

  18. #168
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    Dec 2007
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    Los Angeles
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    Re: HOW TO - make a 220V extension cord

    Offer 600.00
    Ed Conley
    http://www.screamingbroccoli.net/
    MM252
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    TA 185
    Lincoln SP135 Plus- (Gone to a good home)
    Miller 125c Plasma 120v
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    SO 2020 bender
    Beer in the fridge

  19. #169
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    Mar 2009
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    Syracuse
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    104

    Re: HOW TO - make a 220V extension cord

    Thanks. This really clarifies things.

    I interpert this as saying:
    "Do not use metal boxes designed and rated for permement installation."
    not
    "Do not use metal boxes"

    The specific section (1926.403(b)(1)(i)) of the code of federal rulgations that they reference says:
    "(i) Suitability for installation and use in conformity with the
    provisions of this subpart. Suitability of equipment for an identified
    purpose may be evidenced by listing, labeling, or certification for that
    identified purpose."

    So what they're saying is that by using a box in a manner it was not intended for, you are voiding its certification. The same thing would happen with a plastic box.

    The next obvious question is:
    "Does anyone actually make a box that is rated for use on a temporary extension cord?"

    The cords with metal boxes that I see at home depot can get around this by UL testing the entire finished product, but that's not a realistic option for forum members.
    ------------------------------
    Lincoln 175HD
    Lincoln AC/DC225
    Smith O/A

  20. #170
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    Jul 2009
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    Eagle Creek Orygun
    Posts
    15

    Re: HOW TO - make a 220V extension cord

    I wished I ran across this thread last week!

    Just picked up a Lincoln 225 AC DC for $100. Came with a pound of 7018 and a 10' extension cord made of 8/3. Pretty stiff stuff. The male plug was for a dryer and the 3 prong female was for my welder but the plastic surrounding it was broken exposing the wires. I ended up removing both, getting a new female receptical and wired direct to the 50 amp breaker. I wanted to put the plug on the wall permanently but needed the extra length.

    When at Home Depot, whilst considering making an extension cord, the sales clerk kept telling me the 10/3 was only rated for 30 amps & it might be dangerous. So, not being able to decide I left without buying anything. Plus they didn't have much of a selection of plugs.

    Ace & True Value has the best selection & I ended up buying the plug from them. Now I'll go back to HD & check prices for their 10/3 extension cords. Re-wire the original plug & stick it permanetly to the wall.
    Also found at True Value a 230V /50 amp female plug specifically for welders & RV's instead of having a square box at the end!

    .......b

  21. #171
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    Dec 2007
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    5,235

    Re: HOW TO - make a 220V extension cord

    Quote Originally Posted by Ben Bean View Post


    Also found at True Value a 230V /50 amp female plug specifically for welders & RV's instead of having a square box at the end!

    .......b
    Welders and Rv's (50 amp) use two completely different plugs.
    Ed Conley
    http://www.screamingbroccoli.net/
    MM252
    MM211
    Passport Plus & Spool gun
    TA 185
    Lincoln SP135 Plus- (Gone to a good home)
    Miller 125c Plasma 120v
    O/A set
    SO 2020 bender
    Beer in the fridge

  22. #172
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    Jul 2009
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    Eagle Creek Orygun
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    15

    Re: HOW TO - make a 220V extension cord

    Quote Originally Posted by Broccoli1 View Post
    Welders and Rv's (50 amp) use two completely different plugs.
    ...but it looked just like my plug. I've gotta go back & check it because that would really make life easier....

    .....b

  23. #173
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    Nov 2006
    Posts
    5,718

    Re: HOW TO - make a 220V extension cord

    Quote Originally Posted by Ben Bean View Post
    . . .Also found at True Value a 230V /50 amp female plug specifically for welders & RV's instead of having a square box at the end!. . .
    Didn't catch the NEMA # and brand name by chance did you?

    Was it straight or 90 degree?

    I ask because it seems, "There's a cord in my future!"

    Thanks

  24. #174
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    Jul 2009
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    Eagle Creek Orygun
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    15

    Re: HOW TO - make a 220V extension cord

    It was straight. I looked at the NEMA # but with this oldtimersdiesease it's hard to keep numbers in my haid that long... hell I don't even remember when I went to the baffroom last!

    I'm going in there this morning & will look see. I do remember it was $18.

    ....b
    Last edited by Ben Bean; 08-11-2009 at 10:35 AM.

  25. #175
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    Dec 2007
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    Los Angeles
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    Re: HOW TO - make a 220V extension cord

    30 amp RV's use Nema TT-30 Plugs/receptacles/Connectors 120v

    50amp RV's use Nema 14-50 " " " 120/240v

    Welding Machines that use a 50amp Connector usually use a Nema 6-50 240v
    Ed Conley
    http://www.screamingbroccoli.net/
    MM252
    MM211
    Passport Plus & Spool gun
    TA 185
    Lincoln SP135 Plus- (Gone to a good home)
    Miller 125c Plasma 120v
    O/A set
    SO 2020 bender
    Beer in the fridge

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