220V plug types?
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  1. #1
    Join Date
    Mar 2009
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    Kansas City
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    46

    220V plug types?

    I just got a Millermatic 211 yesterday. I told the guys to fix me up with everything I needed but I guess I didnt pay close enough attention to what I was getting. At any rate I bought a 220V, 25' extension cord for about $75. When I got home I realized that the plug style was the wrong type for my outlets however it does match the welder socket. My extension cord looks like this: http://www.stayonline.com/images/nem...nema_5-50p.gif

    and my outlet style looks like this: http://www.stayonline.com/images/nem...nema_7-20p.gif

    I am not exactly sure what the plug is rated for right now. I do know that the breaker is rated at 40A.

    I will not be able to modify the wiring of the hosue because its a rental and im sure the owner will refuse to install a new one unless I offer to pay for it all. The good thing is the MM211 can run on 110V also but all my 110V outlets have 15A breakers so I can only go so high.

    What are my options here? Can I just cut the end off the cord or make an adapter and use it with this outlet? Does the different outlet style mean that it is not possible to use this? Thanks for the help!

  2. #2
    Join Date
    Apr 2009
    Location
    Springfield, Ma
    Posts
    368

    Re: 220V plug types?

    you didn't say but I am assuming that it was a two pole 40 amp breaker??? nema_7-20p??? I would have thought it would have been something else, a range receptacle would be similar but a flat blade for the ground

    I would think it would be unlikely to find a rental set up with an outlet for a welder -- most landlords wouldn't approve of welding I wouldn't think

    assuming it is a 2pole 40 breaker, I'd just make an adapter. checkHere for some ideas
    fred

  3. #3
    Join Date
    Oct 2008
    Posts
    70

    Re: 220V plug types?

    What about installing your own temporary line? One that you can just take with you when you move, without causing any damage. That is, if the line you have now is insufficent.

  4. #4
    Join Date
    Dec 2007
    Location
    Los Angeles
    Posts
    5,230

    Re: 220V plug types?

    Take a Pic of the Breaker and the Outlet.


    Did the Landlord have an RV? Looks like a TT-30r which is a 30amp 120v receptacle.


    Are you sure the Ground slot is rounded?
    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

  5. #5
    Join Date
    Mar 2009
    Location
    Kansas City
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    46

    Re: 220V plug types?

    two pole 40 amp breaker??? nema_7-20p???
    Just by looking at the breaker box it appears that this is the case. It looks like this and is labeled 40A: http://ecx.images-amazon.com/images/...500_AA280_.jpg

    I forgot to mention that I also have an electric stove however the plug style looks similar to the dryer. The breaker is also double pole and labeled 45A. I will post some pictures later of the plug types and try to find out exactly what I have (i only made note of the slanted vs vertical plug types).

    Yes it does look like 7-20p. I will take measurements of the plug poles to verify.

    What about installing your own temporary line? One that you can just take with you when you move, without causing any damage. That is, if the line you have now is insufficent.
    Can you explain this a bit more? I believe the line is fine (40A and 45A) however the plugs do not match but I am unsure if the plug currently installed is telling me that the line is sufficient/unsifficient.

    Are you sure the Ground slot is rounded?
    The ground is round. it is not flat or L shaped.
    Last edited by HakBot; 05-06-2009 at 11:55 AM.

  6. #6
    Join Date
    Mar 2009
    Posts
    13

    Re: 220V plug types?

    a 5-50p is not a 220v rated outlet. It is a 110v outlet

    The cord you purchased is incorrect.(unless the link is not exactly what you bought)

    The recp you have is 30amp 125/250vac or a standard 3 wire dryer recp, but the link to the recp you say you have is actually a 20amp 277vac rec????? I doubt that this is really what you have in a home, that is the only reason i think you have a dryer recp.


    You will need to cut the male cord end off of the extension cord and install a Nema 10-30p to plug it in. Any home store should have one.

    Hope this helps.

  7. #7
    Join Date
    Dec 2007
    Location
    Los Angeles
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    5,230

    Re: 220V plug types?

    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

  8. #8
    Join Date
    Dec 2007
    Location
    Los Angeles
    Posts
    5,230

    Re: 220V plug types?

    I imagine he has a 6-50 Extension cord since he purchased the welder and Ext. cord from the same place.

    He is just using the wrong Plug and receptacle names and wrong drawings he has found on the Web.

    Just read your edit- Take a Photo
    Last edited by Broccoli1; 05-06-2009 at 12:02 PM.
    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

  9. #9
    Join Date
    Dec 2007
    Location
    Los Angeles
    Posts
    5,230

    Re: 220V plug types?

    Is this an Unused Outlet?
    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

  10. #10
    Join Date
    Mar 2009
    Location
    Kansas City
    Posts
    46

    Re: 220V plug types?

    Crap guys i am dumb! The plug is not like I described at all. I am uploading some pics and I will get back asap.

  11. #11
    Join Date
    Mar 2009
    Location
    Kansas City
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    46

    Re: 220V plug types?

    OK It looks like the plug is a NEMA 10-30R. The plug says 30A 125/250V however the breaker is 40A.

    Here are the pics:




  12. #12
    Join Date
    Dec 2007
    Location
    Los Angeles
    Posts
    5,230

    Re: 220V plug types?

    All good now!!

    You just need to make a Pigtail adapter or replace the end on the new Extension cord with a 10-30 Plug

    As long as the wires in the wall are good for 40amps the 40 amp CB is fine
    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

  13. #13
    Join Date
    Mar 2009
    Location
    Kansas City
    Posts
    46

    Re: 220V plug types?

    Thank you! That is what I was hoping to hear.

    I am just assuming that if the breaker was 40A then they ran at least 40A wire. I will take a look at the wire and see what it says (its visible).

  14. #14
    Join Date
    Dec 2007
    Location
    Los Angeles
    Posts
    5,230

    Re: 220V plug types?

    If you do not want to cut up your new Welder Ext. cord you can make a Pigtail cheaply by going to the Box store and buying a Replacement Dryer Cord- will look just like what you have in your hand- and then wire up a 6-50r on the other end.
    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

  15. #15
    Join Date
    Mar 2009
    Location
    Kansas City
    Posts
    46

    Re: 220V plug types?

    I ended up buying a replacement plug and re-wired it. The guy at home depot was shocked that I even considered making an adapter.

    Anyway the welder produces much better welds with 220V. I probably wont even use the 110V connection unless i am in a pinch.

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