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Standard 220 dryer outlet to nema 14-50 female adapter

Discussion in 'Model S: Battery & Charging' started by Johnnyo71, May 20, 2013.

  1. Johnnyo71

    Johnnyo71 Member

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    i have a clothes dryer outlet that i can use at beach hose to plug in. can anyone suggest where I can find an adapter with a standard dryer male and 14-50 female? circuit has over 50+ amps sso that is not a problem..
     
  2. Puyallup Bill

    Puyallup Bill Member

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    How many contacts on the current dryer cord? If four, and the dryer outlet is NEMA 14-30, you can remove the neutral prong from the Tesla supplied 14-50 adapter and it will fit in the 14-30 socket. The neutral is not used by the UMC.

    If it really is a 50 Amp circuit, then good to go. If it is a more common 30 Amp circuit, then you must dial the Tesla down to 24 Amps.
     
  3. vfx

    vfx Well-Known Member

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    14-50 is considered the standard dryer outlet. (kinda). Can you post a picture of your plug? Tesla makes many adaptors.
     
  4. Cosmacelf

    Cosmacelf Active Member

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    Yeah, be careful - the various 14-30, 14-50, 10-30 plugs can all look similar. There is no "standard" dryer plug. Common ones are a 14-30 4 pin plug and a 10-30 three pin plug. Both are 30 amp 240V. You say the circuit has over 50+ amps? I'm not sure what you mean by that - is the dryer plug breaker 50 amps? Or the entire service panel has 50+ amps?

    If this dryer plug is within 20 feet of the Tesla, you should be able to buy an appropriate adapter here:

    http://shop.teslamotors.com/collections/model-s-charging-adapters
     
  5. joshuaeven

    joshuaeven Member

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  6. brianman

    brianman Burrito Founder

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  7. joshuaeven

    joshuaeven Member

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    No documentation. One could always email them, I suppose.
     
  8. brianman

    brianman Burrito Founder

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    Yup, I might.

    I'm kind of hoping for FlasherZ to chime in one of these days with a recommended supplier of such adapters that "does all the right things" (fuses or whatever) to make such adapters as safe as possible.
     
  9. Puyallup Bill

    Puyallup Bill Member

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    Why? Just remove the 14-50 neutral prong and the 14-50 now fits 14-30, 14-50, and 14-60. You will not hurt the UMC, as it doesn't care about neutral.

    If the dryer socket is old and is 10-30, then you need an adapter to get to 14-50.

    But again, using the Tesla 14-50 UMC adapter, you must dial down to the appropriate current - 24 Amps for a 30 Amp dryer circuit.

    - - - Updated - - -

    I beg to differ. 14-30 is pretty much the standard dryer outlet, not 14-50. 14-50 is the common electric stove outlet in household wiring.

    - - - Updated - - -

    I beg to differ. The 14-30, not the 14-50 is the pretty much standard dryer connection. The Neutral pins are quite different. The 14-50 is commonly used for electric stoves in residential wiring.
     
  10. bollar

    bollar Disgruntled Member

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    Since this is your home, I think the best solution is replacing the 14-30 with a 14-50 receptacle and replacing the dryer cord with a 14-50 range cord.

    Although the risk is theoretical, running 40 amps through a plug rated at 30 amps seems like a bad idea and a fire risk.

    This presumes the circuit AND the wiring are properly rated for 50 amps.
     
  11. Babylonfive

    Babylonfive Power12

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    I strongly suggest that no one clips the pin on their Tesla converter. Either buy a 14-30 converter (safest) or else buy a 'dogbone' from Camco (check Amazon), and cut or trim the pin there.

    IN ALL CASES when converting a rated connector to a smaller rated connector type (in this case 50A converted down to 30A or lower), you MUST reset your car charging value to adhere to the limits of that connector!!

    Example: cutting or trimming a pin on a 14-30 or 10-30 converter would yield a connection to a 30A circuit, where your max draw should be 80% of that: 24A. But, your UMC only knows that it's connected through a 14-50 plug end -- these UMC plug-end connectors tell the UMC how much current to draw, so the car will try to charge at 40A. If you don't adjust the car to 24A it will overload the circuitry, and if any part of the protection system (breakers) fails, this could lead to a fire.

    In all cases converters are possibilities for danger, so its been recommended to always mark any "converter" cable with a quite visible tab reminding the user to reset their charging value, and to only use with the EV it was designed for.

    Props to FlasherZ for all the great exposure on these subjects and more.
     
  12. efusco

    efusco Moderator - Model S & X forums

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    Just bought the same one...see below

    The UMC cord is just 18 feet. And the key is you have to measure from the charge port on the car. This weekend I drove over 200 miles each way and stayed at my sister in law's place. Her NEMA 14-30 outlet was less than 18' from the passenger side rear quarter panel of my car when I backed in, but it was about 22' from the driver's side rear quarter panel leaving me 3-4' short of being able to plug in with my UMC and the Tesla 14-30 adapter. I had no 14-50 to 14-30 adapter for my 30' NEMA14-50 extension cord at the time (just ordered, see above).

    So, if you're going to a new location, it's worth asking for measurements and a floor plan ahead of time or you'll be stuck with 120v charging as I was.
     
  13. joshuaeven

    joshuaeven Member

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  14. efusco

    efusco Moderator - Model S & X forums

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  15. Lloyd

    Lloyd Active Member

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    Why not buy the 14-30 adapter from Tesla???
     
  16. bollar

    bollar Disgruntled Member

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    Because he wants to charge at 40 Amps, not 24 Amps. Does the 14-30 adapter not automatically reduce the maximum Amps allowed?
     
  17. Cosmacelf

    Cosmacelf Active Member

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    The shorter 25' Conntek extension cord might be a nicer one - it is 10 pounds lighter (20 versus 30), and I know that the Camco one is very stiff and hard to unroll as I bought it too. If I had to do it over again, I think I'd try the Conntek one. By the way, you can build your own adapters if you want. I wrote this document as a distillation of info found on these forums: http://cosmacelf.net/Home%20Made%20Adapters.pdf

    - - - Updated - - -

    Actually, I don't think we know what the OP is really trying to do - his original post is not clear, and he hasn't come back to this thread.
     
  18. Lloyd

    Lloyd Active Member

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    Yes, but you cant pull 40 amps from a 30 amp recepticle.
     
  19. bollar

    bollar Disgruntled Member

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    Maybe your concerns will be heard louder than mine, posted earlier in this thread. I think the OP's intent is clear.
     
  20. neroden

    neroden Happy Model S Owner

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    Could it be as simple as the fact that the 14-30 adapter is currently sold out?
     

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