RV adapter

Discussion in 'Hyundai Kona Electric' started by R P, Jul 20, 2019.

  1. Really looking forward to your tests. If the Morec works, I might try putting together my own adapter using these parts.
    I would just replace the 14-50R end of the adapter with the new plug wired to work with 120V.
    Actually works out cheaper (in CAD) than buying the HD Tesla adapter, and delivered to my door. If anyone knows of even a cheaper source for these parts, please let us know.
    Last edited: Sep 17, 2019
  3. Yeah, looked at the back of mine, and it doesn't have screws. The back cap looks like it is sealed in. I think I will just dial back the L2 amps on the car side to either low or medium and watch the charging levels (both on my car and on the EVSE) to be sure it doesn't blow the breaker. When they say 30A outlet, wonder if that is the max continuous draw to be used, or the size of their breaker.

    In any case, will wait until someone else tests the Morec before I start ordering any parts. No rush right now, as not planning any trips up north until next year. But it does indeed make driving to Stewart in my Kona EV possible and practical.
    electriceddy likes this.
  4. electriceddy

    electriceddy Well-Known Member

    If the equipment rating is certified to be max 30 A circuit (or outlet as referred to) than I would expect the equipment to indeed draw 30A and adequate overcurrent protection (for the unit) is provided by that , however due to 80% rating of conventional circuit breakers I would limit that to 24 A.
    Only testing will prove the various Kona adjusted levels to be within those parameters.
  5. I know at home if you have a 30 amp receptacle, you need a 30 amp breaker. But not sure what the regs are with campgrounds. And I would guess they might lose some voltage with the long lines to each outlet, which might cut some watts available for charging. I guess will just have to try it and see.
  6. electriceddy

    electriceddy Well-Known Member

    RV Parks offer 14-50 c/w 50 A breaker or TT30 c/w 30 A breaker, some also have 20A (5-20R) and 15 A(5-15R) receptacles. You should avoid drawing more than 80% of each type. Note … some 14-50s are on a 40A breaker.
  7. TheLight75

    TheLight75 Active Member

    Finally had a chance to test the Zencar EVSE and the “Tesla” TT-30 adapter from Home Depot. The Zencar powered up fine showing 120V on the display. I had to lower the amps to 16A as I was plugging the TT-30/14-50 adapter into a 20A socket.

    When I connected it to my Kona, it charged at 1.55 kW and the volts dropped to 108V. Overall, I’m satisfied and can’t wait for the next camping trip when I up it to 24A.

    Attached Files:

    electriceddy likes this.
  8. electriceddy

    electriceddy Well-Known Member

    This is the adjustable of my choice . They been around for a few years with no reported malfunctions and offer quite a good range of current settings (manually by RFID or shake). I prefer the manual method as opposed to auto detect as I am familiar with what is offered on different receptacle configurations and can adjust accordingly. Can't wait to see your reports of the other settings/voltages.
  9. I am amazed how much the price has dropped on EVSEs since I bought mine just 4 months ago. In hindsight, I should have waited, since I have not needed it yet with all the free charging here.

    Here is another one that I just came across (Amazon keeps sending me "deals"). Less than $400 CAD, does L1 (110 V) or 32A L2, and also has adjustable current (8, 12, 16, or default 32A).
  10. Bugblndr

    Bugblndr Member

    I looked at that one 3 weeks ago but it was $460 or so then. I've got 3 EVSEs now, 2 32A ones and a 16A one. Total paid was less than $1100 CAD delivered to my door.

    Lots of options out there for everyone now and the prices just keep getting better.
    Last edited: Sep 21, 2019
  11. The adapter you listed is a 5-15 to a L5-30. The L6-30 will not fit the L5-30 it is a different plug. both the 5-15 and the L5-30 plugs are 115 volt only. The L6-30 is 240 volt only. The L5-30 is a travel trailer plug similar to the TT-30. Attached is a figure of NEMA plugs as found on Wikipedia.
    Last edited: Sep 26, 2019
  12. electriceddy

    electriceddy Well-Known Member

    As long as you do not exceed 80% the male connector rating which in this case is 1440 Watts (120*15*.8), current level can be adjusted with the settings menu in the car- both L1 and L2 (If your EVSE is not adjustable). I suggest you try it and measure with a clamp on meter at home before taking it on the road.
  13. So that's actually two questions. 1 would it work? 2 If it worked would it draw to many amps for a 15 amp circuit?

    The answer to the first question is possibly as long as the neutral wire on the nema 5-15 plug connected to the L2/N side of the J-1772 plug. There is a 50 50 chance of that. (see earlier thread discussions on the connection of the 14-50. A L6-50 would have the same wiring as the neutral pins is not used. See post 27 discussion.) If your charger allow you to set the amps to 12 amps then it would work. I found that the minimum setting using the charge manager on the Kona for my 30 amp setting on my charger was about 17 amps and that would be to high.
  14. I may have answered my own question by actually reading the label - "Automatically Adjusts" and "typically 12A". So I'm going to order the adapter, and will post back what I find.

    Attached Files:

  15. electriceddy

    electriceddy Well-Known Member

    Looks like this falls under the category" if all else fails - read the instructions";)
  16. Ok success! Connected the adapter and plugged into standard 110 outlet. Charger ready lights came on as normal. Plugged into the car and the charging in progress light came on and charging commenced. No breakers blown, no sparks or smoking, and cable stayed cool. Charged for 5 hours and battery level increased at typical L1 rate. All good!
    electriceddy likes this.
  17. electriceddy

    electriceddy Well-Known Member

    Good to hear, it would be best to insure nothing else is drawing on that circuit, unless you ran a separate one from the panel (the better scenario). I actually installed a 5-20 GFCI as an L1 back up.
  18. Great news!! I rigged up a dog bone RV adapter and today tested it with my Morec EVSE. And it works!! Below is a description of the parts I used to put it together, and details of the tests I performed.

    First I have to thank Fastnf, as I was about to give up on this idea until I saw his post. I learned a lot from his description and pics, and wired mine up the same way. Also thanks to Bugblndr who confirmed for me that the Morec and SimplyWork EVSE's are essentially the same product. I suspect a lot of these similar looking Chinese products are the same, just different brands/sellers and all work at 110 - 240V.

    Also found this website that describes how to build an RV adapter (same as what Fastnf described).

    And here are the parts I bought to put together my adapter. Turned out to be a lot cheaper than buying the Tesla adapter, and a better final product, too, with the dog bone.
    Here's a pic of the final product.
    DSC_0593 (1024x918).jpg

    Did 3 tests, Minimum, Reduced (middle setting) and Maximum on the car settings.
    Minimum: EVSE displayed 19.1A/113.1V and car charged at 2.2 kW.
    Reduced: EVSE 28.1A/112.2V and car at 3.3 kW.
    Maximum: EVSE 30.9A/111.9V and car at 3.7 kW.

    First test at lowest L2 car setting.

    2nd test at middle setting.

    Final test at full maximum car setting.

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