From the shop, the Tesla UMC (i.e. mobile EVSE) comes with only one plug: the regular 10 amp 240V socket we all have at home. While this is good enough to trickle charge, it’s really not good enough for a real charge. The device has the ability to change the connector (i.e. to put different plugs on it) and it is 11kW rated (3 phase 16A) so – if your Tesla does not have “dual chargers” option, this device is good enough to provide all the current your Tesla can take. But, how can you plug it into powerful sockets?
Tesla has not come up yet with an Australian solution, therefore an artifice is required:

  1. Buy the Tesla 16A capable European “pigtail”.
  2. Build your own extension leads by buying the European 5 pin “female” socket, the same 6mm 5 core cable and Australian-compatible 20A and 32A 3 phase 5 pin sockets, OR
  3. Contact the good people at EVnomics, let them know of your predicament and they shall sort everything out.

Here’s some photos of a finished product, courtesy of Damon:

2 thoughts on “TESLA UMC

  1. Mark Jamison Reply

    I always thought people that were buying Tesla cars were smart??
    This adapter needs to have an in line 16A circuit breaker. It is down sizing from a 32A to a 16A and requires the circuit breaker to protect the 16A cable that will be plugged into the 16A socket.
    This is an Australian Electrical Standard.
    The 32 Amp plug is protected by the 32 Amp circuit breaker feeding the 6mm cable to the outlet but because it is stepping down to a 16 Amp the cable on the 16 Amp plug is most likely only 2.5mm and will not have any cable protection.
    You are building a device that isn’t just used for charging an electric car. These types of adapters are used in the entertainment industry all the time and the one you are building could end up being used for something other than the Tesla car charging and end in disaster. I understand the Tesla UMC will prevent any problems such as overloading and most likely you will never have a problem charging the car but it is still a device that is not built by AS3000 electrical standards.
    Electricians have to do a four year apprenticeship to learn this stuff. Anyone attempting to make devices like this without understanding the regulations risks causing a fire and potentially killing people.
    One thing that is guaranteed – insurance will not pay up if you use this and it ends in disaster.

  2. The Dude Reply

    The UMC has its own management system that maxes out at 16Amps. So, it really doesn’t matter what you plug the UMC in, the protection is in the pigtail.
    Not working in the event industry, I wasn’t aware there is an actual need for an adapter cable between Australian 3 phase and European 3 phase. Do you use a lot of these cables?
    In my experience, from what I have seen, this is pretty niche stuff. I would really struggle to find another use for this cable – it’s hard enough to even see in real life an European 3 phase plug.
    While I understand your concern, most EV owners keep their charging equipment with their cars, and use it for the purpose they build their own equipment. It is presumed that, if you own an events management company or work at one, you would not have to hit up a Tesla owner, to loan you his charger cable?!
    So, if you built it yourself, you’ll know what it’s for, and you don’t really need to worry.
    Also, I do not appreciate the implication that (some) Tesla owners are dumb. Pretty passive-aggressive there matey.

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