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Connect a 10-30R plug to a L14-30R

Discussion in 'Charging Standards and Infrastructure' started by Slackjaw, Oct 10, 2011.

  1. Slackjaw

    Slackjaw Member

    Joined:
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    Location:
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    I have some cable, a 10-30R plug and a L14-30 socket, which can connect to our L14-30 UMC adapter which I bought from TM to charge at Raceway Park. Can anyone tell me how to wire the L14-30 end of this adapter? It's non-trivial because it is going from a 3-pole, 3-wire plug on one end, to a 3-pole, 4-wire socket on the other. I've googled it but not had any success. I won't hold anyone liable for anything, just wondering if it is possible. PM me if you'd prefer to CYA ayway (understandable). Thanks in advance! - Ian

    Ref: Universal Adapters - Available in North America Only (charging) Tesla Motors
     
  2. scott451

    scott451 KWH-PWR#1349Sprt,S Sig#96

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    I don't have the pinouts in front of me, but the jist of it is to connect the neutral and ground together on the 14-30 and connect those two to the ground pin of the 10-30. I'm assuming the 10-30 is 230v
     
  3. Doug_G

    Doug_G Lead Moderator

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    Location:
    Ottawa, Canada
    NEMA L14-30:
    G is ground (green wire)
    W is neutral (white wire)
    X is hot (may be red)
    Y is the other hot (may be black)
     
  4. scott451

    scott451 KWH-PWR#1349Sprt,S Sig#96

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    Got it.

    So W of the 10-30 goes to G & W of the 14-30. X=X and Y=Y
     
  5. TEG

    TEG TMC Moderator

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    Does it even matter if W is hooked up on the 14-30? Does the UMC do anything with the neutral?
     
  6. Slackjaw

    Slackjaw Member

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    Thanks for the quick help! After reading Scott's message last night plus one PM, I rewired my adapter cable [was all wrong, luckily no harm done] and got the car charging before I passed out. It saved the day. Today it was all ready for rides & Tesla Time!

    I've also ordered the official adapter from TM, mainly because it seems you can't buy the loose 10-30 plugs any more (they're not "code", according to Home Depot & Loews) so I'll have to return the plug I borrowed from an air compressor.

    Again thanks for the quick help, it really saved the day.
     
  7. Slackjaw

    Slackjaw Member

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    Location:
    Central NJ
    Apparently not, as I didn't connect neutral and the UMC is working fine. I wasn't explicitly ignoring Scott451's advice, but I got a PM separately telling me the minimum connections. I was about to change the wiring and thought I'd test it anyway; it happily charged all night without neutral connected.

    It is a pretty ugly "solution", 10-30 wall socket adapted to 14-30 then through Tesla official adpater to connect that to the UMC. But the electrons don't seem to mind.
     
  8. SByer

    SByer '08 #383

    Joined:
    Oct 23, 2007
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    Location:
    Cupertino, CA
    I've seen worse. Get an AVCON involved + a California connector extension. Then you're talking.
     

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