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Best charging solution if I already have an RV outlet.

Discussion in 'Charging Standards and Infrastructure' started by ebjohnso, Aug 20, 2016.

  1. ebjohnso

    ebjohnso Member

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    I already have an RV plug installed at the house. Do I still need to get a new outlet installed or can I just get an adapter or something? Getting my model x in October. I didn't get the high amp upgrade.
     
  2. kort677

    kort677 Active Member

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    more than likely an adapter would suffice.
     
  3. KJD

    KJD Member

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    You already have everything you need. The Tesla will come with a 14-50 adapter plug and this is the same as an RV plug.
     
  4. thecloud

    thecloud As rhythm raced inside, the ship came alive

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    Not necessarily. The 120V TT-30 plug is also called an "RV plug." If that's what the OP has, then an adapter will be needed.

    Check this handy chart to see what kind of RV outlet you already have. If it's a 14-50 then you're good, as KJD said.
     
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  5. ebjohnso

    ebjohnso Member

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    This is what it looks like. The 14-50 looked different to me.
     

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  6. thecloud

    thecloud As rhythm raced inside, the ship came alive

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    That's an L14-30 outlet, so you need this adapter. Also, and this is very important: you will need to manually set the charging rate (on the charging screen in the car) to 24 amps. That's because third-party adapters don't have a way to tell the car it should avoid trying to pull 40 amps, so you need to set the rate yourself or you'll trip the breaker (if you're lucky).
     
  7. Saghost

    Saghost Active Member

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    That's one of the twist lock plugs, often used for generators. L6-30, maybe?

    If you figure out which one it is, you can get an adaptor to 14-50, or an EVSE with that plug.
     
  8. KJD

    KJD Member

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    That one has 4 prongs so yes it might be a L14-30.

    Take a good close look at the front of the outlet. Most of them say what style (NEMA number) they are. The chart that @thecloud posted is a good reference to help you figure it out.
     
  9. TexasEV

    TexasEV Active Member

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    Don't do it. Have a properly wired 14-50 outlet installed. Adapters are fine for occasional use when traveling, but it's best not to use them for your daily charging at home.
     
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  10. thecloud

    thecloud As rhythm raced inside, the ship came alive

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    This is really the best advice. Any adapter which connects a higher-amperage plug (50A) to a lower-amperage receptacle (30A) is not code-compliant, and is only for temporary use in a situation where you make certain you restrict the load to less than the outlet can supply continuously (in this case, 24 amps.) It'll work just fine, until that one time when it doesn't.
     
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  11. idoco

    idoco Member

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    If you can get hold of a Nema 14-30 Tesla adapter for your UMC you could change the receptacle to a standard Nema 14-30.

    Another option would be to take a look at the wire already in place. If you are lucky and someone oversized with 6/3 than you can change the receptacle and breaker.
     
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  12. PtG62901

    PtG62901 Member

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    That is what the 3-phase plugs in my commercial building look like. FYI.
     
  13. Rocky_H

    Rocky_H Member

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    As a couple of people have mentioned using a pigtail to switch from the 50 to the 30 is not good for daily use. @TexasEV mentioned installing a 14-50 outlet, but that may (probably will) be more complicated, with having to pull and re-run new wiring through walls, etc. What you could do, which would be a cheaper and more simple install is to remove the outlet, and mount a wall connector on that 30A circuit. (That is assuming it's an L14-30, as @thecloud suggested.) The wall connector has settings inside to run on many different breaker sizes, so putting it on a 30A is no problem.
     
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