TMC is an independent, primarily volunteer organization that relies on ad revenue to cover its operating costs. Please consider whitelisting TMC on your ad blocker or making a Paypal contribution here: paypal.me/SupportTMC

Anyone make a dual-plug home charger?

Discussion in 'North America' started by igotzzoom, Mar 3, 2015.

  1. igotzzoom

    igotzzoom Member

    Joined:
    May 26, 2013
    Messages:
    838
    Location:
    Laguna Hills, CA
    I was just curious if anyone has seen a dual-plug home EV charger. I'm thinking in the near future, it may be not unusual for many households to have two EVs. It seems like right now, it would require two separate charging units. Thanks.
     
  2. Evbwcaer

    Evbwcaer Member

    Joined:
    Jun 21, 2014
    Messages:
    470
    Location:
    Minnesota
  3. dirkhh

    dirkhh Middle-aged Member

    Joined:
    Jul 7, 2013
    Messages:
    3,645
    Location:
    Portland, OR, USA
    There are many multi-EV families here on TMC. The biggest question is "how much power is available?"
    The cost of getting beefier service into my garage was so prohibitive that we ended up charging only one car at a time, but for convenience we have two chargers, each connected to a NEMA 14-50. One J1772 for the Leaf, the other the Tesla UMC.
     
  4. igotzzoom

    igotzzoom Member

    Joined:
    May 26, 2013
    Messages:
    838
    Location:
    Laguna Hills, CA
    I guess. Come to think of it, the sequential charging strategy makes sense. If a typical EV only requires 4 hours for a full charge, if the charger could detect the charge level of the two vehicles it's plugged into, it could stop charging one, and start charging the other. I've seen pedestal chargers with two or more cables, but it seems like they're made more for public charging.
     
  5. FlasherZ

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

    Joined:
    Jun 21, 2012
    Messages:
    7,019
    Unfortunately, J1772 AC EVSE's can't detect the battery level of the vehicles they're plugged into, so they can't make that decision... they could, however, cycle power back and forth between the vehicles. It could start by doing a round-robin, but when one car stops drawing, then switch to the other. There are lots of things that it could do.

    For me? I'm just installing another Tesla wall connector. That leaves my garage with 2 80A HPWC's, a NEMA 14-50 for backup, a NEMA 6-50 in my machine shop, and a NEMA 6-30 (normally for my air compressor) also in my machine shop. That should be enough, I think. :)
     
  6. drees

    drees Active Member

    Joined:
    Jun 23, 2009
    Messages:
    1,121
    Location:
    San Diego
    Hydra will do what you want, but you have to know what you're doing.

    Otherwise the only option is a Chargepoint CT4000 that I'm aware of, but it only does 30A and is very expensive.
     

Share This Page