We have an electrician coming so this is not a "how do I" thread, It's more for me. I THINK the electrician is going to run a sub panel off of an existing sub panel. The breaker in the existing will be 60a with a run to two 60a breakers in the new sub panel. Those will feed our new wall connectors. If power sharing is not yet enabled between gen 3 connectors then how will this work? I am assuming that both cars can not charge at the full rate since they both share 60a. Will the cars self regulate to not overload the single 60a supply in the first sub panel?
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Gen 3 wall connector power sharing
- Thread starter a1machinista1
- Start date
Without power sharing, you can only set each HPWC as if it has a 30 amp breaker, or opt to only use one connector at a time.
The good news is that power sharing is now supported on Gen3 HPWC's.
The cars won't self regulate at all. They only know what the HPWC tells them they can have, current wise.
It could be 40/20, or maybe even 50/15 without tripping the breaker.
Jeremy3292
Active Member
Wall Connector Power Sharing | Tesla Support
With Power Sharing, you can allow up to six 3 Wall Connectors to share power and charge multiple vehicles at once. Learn how to set up and troubleshoot Power Sharing.
And totally against the installation manual. I also wonder what's under those GLOBS of electrical tape!
I think they are called Polaris connectors. And I think this install is ok. Been in this forum for the last 3 hrs reading. I will call the electrician in the morning. Don't have the cars yet so I don't need to use them.
Polaris connectors are small and elegant, and shouldn't need ping pong ball sized electrical tape protection.
The install information for sharing is on page 24 of the install manual.
I sure hope that's 6 AWG, too. I can't quite read it.
S3XY1138
Member
PVC raceways are for underground installations. also one locknut is not tightened.
S3XY1138
Member
This is how Tesla recommended Gen 2 HPWC in the power sharing configuration to be installed.
Yes I agree, but its not how they recommend the Gen3 HPWC to be installed, and it'd be REALLY nice if a professional followed the instructions.
Power sharing support with Gen3 HPWC is great news. Question… I park 2 Model 3s in my garage, which also has the main electrical panel for the house. The panel has a single 60A breaker that was intended to feed 2 Gen2s by way of a junction box that would send power to each one, that would also be connected by a data cable. Tesla’s demise of the Gen2 WC caused me to change direction. I now have two Gen3 HPWC units ready for a power sharing installation, but existing wiring is still set up for Gen2 power sharing.
I assume That I should remove the junction box and install a sub-panel instead, with two 60A breakers, each sending power to one of the Gen3 WCs To be installed. Once the Gen3s are connected by WiFi and using the power sharing feature, I assume power to the Gen3s will be limited to 60A total. I would be very grateful for confirmation that this is what my electrician will need to do to set up power sharing with my 2 Gen3 WC units. Any clarification would be great! Thx!
That was my understanding going into our installation. The manual states that each connector needs its own circuit. BUT it also shows hook up without a sub panel. Our electricians employee hooked up our two Gen3s via junction box WITHOUT individual breakers. There have been statements made both in favor and against how our electrician installed these. Luckily we don't have either of our cars yet so we have time to figure it out. I would say talk it through with your electrician and don't be afraid to ask questions. Our electrician who we have used for multiple projects was very open to the discussion I had with him. Remember this is all new technology that everyone is incorporating into our lives and that some electricians are still learning about. The owner and the electrician are coming over tomorrow and we are going to discuss the installation.
Right, per page 24 of the installation manual, a subpanel is not required. OTOH, even without a subpanel you are expected to have individual branch circuits to EACH wall connector, also per page 24. That's just how it is, I'm not saying I agree it should be required.
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