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What plug is this ?

Discussion in 'Model S: Battery & Charging' started by Great Dane, Apr 6, 2015.

  1. Great Dane

    Great Dane Member

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    Found this at a campsite
    love to know what type of plug this is.
    IMG_1546 (Large).JPG
     
  2. stopcrazypp

    stopcrazypp Well-Known Member

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  3. green1

    green1 Active Member

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    Standard TT30, it does up to 30A at 120V and is pretty common in many RV parks (especially older ones)

    - - - Updated - - -

    DOH! beat me to it!
     
  4. Great Dane

    Great Dane Member

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    Sorry Just found out what it was
    NEMA TT–30 is a 30 A, 125 V outlet
    I cant believe it is only 125 v
    because the car can only charge 12 amps at 125 volt
    enough for ac ? over night .
     
  5. Takumi

    Takumi Member

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    NEMA TT-30
     
  6. green1

    green1 Active Member

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    Shouldn't the car do 16A at 120V? (TESLA does have an adapter for 120v 20A outlets, 80% of which would be 16A, not 12A) Others here may know if there's a way to convince the car to go even higher (If you have 30A available, you might as well do 24A)
    As for power, yeah, it kinda sucks, but you know what they say, any power is better than no power...
     
  7. Great Dane

    Great Dane Member

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    Thank You All for the quick replies, this is truly an awesome car with awesome support people!

    I am going with this
    NEMA 14-50R to TT-30P RV Plug Adapter
    Great place for future adapters
     
  8. Chris TX

    Chris TX Active Member

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    Keep in mind you'll be limited to either 20A or 24A. Since it's only going to be 120VAC, you'll get 6-8mph charge. It's better than [email protected], though!

    If you had access to two TT-30 outlets, you could use a combiner and get [email protected] You just have to make sure they are on different legs.

     
  9. Cottonwood

    Cottonwood Roadster#433, Model S#S37

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    With this adapter, NEMA 14-50R to TT-30P Plug Adapter, you can charge at 120 Volts and 24 Amps (20 Amps on older Model S's). The standard RV TT-30 to 14-50 adapter for RV's will not work for a Tesla; you get nothing.

    There is a whole set of adapters, Adapters For Tesla Model S; just be careful that you know what you are doing...
     
  10. TEG

    TEG TMC Moderator

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    #10 TEG, Apr 6, 2015
    Last edited by a moderator: Mar 13, 2016
    This video gives some intro to RV park power sockets:

     
  11. Cottonwood

    Cottonwood Roadster#433, Model S#S37

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    Just be careful!

    The standard TT-30P to 14-50R adapter made for an RV will not work with a Tesla!!! You need to get one made for a Tesla, and that will not work for an RV...
     
  12. FlasherZ

    FlasherZ Sig Model S + Sig Model X + Model 3 Resv

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    Campsites are the last place you want to use one of those devices because of the higher chance of failure. Those combine devices can end up being the return path for entire pedestals. See my FAQ (signature) for more information.
     
  13. TEG

    TEG TMC Moderator

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    #13 TEG, Apr 6, 2015
    Last edited: Apr 6, 2015
    Because the UMC wants 240V across both legs of the NEMA 14-50. The 'dog bone' adapter just puts 120V on one half of the 14-50 with one hot leg giving potential over neutral and the other leg is not energized at all.

    db2.png
     
  14. Rheazombi

    Rheazombi Member

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    Hope OP reads your post.
     
  15. FlasherZ

    FlasherZ Sig Model S + Sig Model X + Model 3 Resv

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    Close... they bridge both hot pins on the 14-50 to the single hot on the TT-30. The Tesla sees 0V because there's no potential difference between them.
     
  16. TEG

    TEG TMC Moderator

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    #16 TEG, Apr 6, 2015
    Last edited: Apr 6, 2015
    Not always... It is inconsistent. Some dog bones are like the one in the picture.

    Some more talk of RV weirdness here:
    Using electrical adapters for your RV
    The situation is fairly 'sucky'. They sell all these adapters that you can plug together and easily overload the circuit. You can buy a NEMA5-15 to TT-30 adapter and then a TT-30 to NEMA14-50 adapter and plug a whole 100amp RV worth of stuff into a 15amp circuit. They say things like "make sure not to turn on your air-conditioner unless you know what you are doing." I think some people treat this as "turn things on until the circuit breaker trips" to know how much current you can get away with. It is no wonder that many sockets in RV parks are in sad condition.

    50 Amp Wiring Modification


    RVers sometimes create wacky cables trying to extract all the power they can from those pedestals:
    crazyrv.png
     
  17. Great Dane

    Great Dane Member

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    Thanks TEG for the video
    yes I am reading all the posts.
     
  18. Chris TX

    Chris TX Active Member

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    The return path for the entire pedestal? If the pedestal only has 120VAC going to it, how is that a problem? If the pedestal has a 14-50R on it, the OP probably wouldn't be playing with the TT30, now would they? ;)

    All of the ones I've seen that have a TT30 and a 5-15 duplex, only have a single 30A single pole breaker going to them.
     
  19. FlasherZ

    FlasherZ Sig Model S + Sig Model X + Model 3 Resv

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    If you use two different pedestals that are on opposite legs with one of those combiners, you can end up with a situation where the combiner becomes a parallel return path for the neutral conductor on one of the pedestals; that, or with a neutral failure in one of the pedestals you'll end up with the normally-grounded guts of the combiner floating at 120V. I detailed the scenario previously here.

    Bottom line: the combiners are dangerous. Do it the right way.
     

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