Wiring for Tesla Charger, Powershare

[EWELON]

Hey all. This is my first post. About to place my order for my CT. Doing due diligence on the PowerShare. Got connected with an electrician via the Tesla website. I already have a Model 3 that we charge without difficulty using an older generation Wall Connector. I get that I’ll need to upgrade that to a Universal Wall Connector….but the electrician is saying that they’ll need to also run a new wire from the circuit breaker to the wall connnector. Which is basically the most expensive component of the whole install. Just checking to see if anyone has had a similar recommendation. They’re saying that: “this wiring would have to be replaced. The Cybertruck has a larger battery than other Tesla models, which necessitates a higher amperage circuit. To accommodate the higher amperage, it requires a larger gauge wire to be able to accommodate the increase in power flow. Without upgrading these components you will not be able to properly charge the battery for the vehicle….”

a picture of the wire in question is attached.
Thanks for the advice. Excited to finally get this vehicle!

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[mongo]

Hey all. This is my first post. About to place my order for my CT. Doing due diligence on the PowerShare. Got connected with an electrician via the Tesla website. I already have a Model 3 that we charge without difficulty using an older generation Wall Connector. I get that I’ll need to upgrade that to a Universal Wall Connector….but the electrician is saying that they’ll need to also run a new wire from the circuit breaker to the wall connnector. Which is basically the most expensive component of the whole install. Just checking to see if anyone has had a similar recommendation. They’re saying that: “this wiring would have to be replaced. The Cybertruck has a larger battery than other Tesla models, which necessitates a higher amperage circuit. To accommodate the higher amperage, it requires a larger gauge wire to be able to accommodate the increase in power flow. Without upgrading these components you will not be able to properly charge the battery for the vehicle….”

a picture of the wire in question is attached.
Thanks for the advice. Excited to finally get this vehicle!

The Cybertruck battery size has nothing to with anything other than how long it takes to fully charge.
Unless it's a SR 3, they both have the same 48A max charger in the vehicle. What is your WC currently set to for charge current?
That cable is NM-B and it looks like it says 4AWG copper (CU) + 8AWG ground which is plenty large enough for the 60A amp circuit.

 

[mongo]

Also, Powershare is completely optional. You can charge with your current WC and install a generator port + manual transfer switch to power the house from the 14-50 outlet in the bed at 9.6kW versus 11.5kW max from Powershare.

 

[EWELON]

The Cybertruck battery size has nothing to with anything other than how long it takes to fully charge.
Unless it's a SR 3, they both have the same 48A max charger in the vehicle. What is your WC currently set to for charge current?
That cable is NM-B and it looks like it says 4AWG copper (CU) + 8AWG ground which is plenty large enough for the 60A amp circuit.

Thanks for the reply. Our current WC is set to charge at 48A and does so just fine. Your explanation is what I figured. Bummed that it sounds like this electrician is trying to take advantage. Pros of PowerShare though would also be (so long as the CT was already plugged in) that time from power failure to power back on is near instantaneous, if the YouTube vids are true.

 

[mongo]

Thanks for the reply. Our current WC is set to charge at 48A and does so just fine. Your explanation is what I figured. Bummed that it sounds like this electrician is trying to take advantage. Pros of PowerShare though would also be (so long as the CT was already plugged in) that time from power failure to power back on is near instantaneous, if the YouTube vids are true.

Yeah, I have Powershare and it switches over pretty fast. Powerwalls are faster though (always on versus truck that could be asleep).
Wanted to be sure you knew all your options.

 

[EWELON]

Yeah, I have Powershare and it switches over pretty fast. Powerwalls are faster though (always on versus truck that could be asleep).
Wanted to be sure you knew all your options.

Yep I’m a “Installation Without Powerwall” situation. Power interruptions in our area don’t last too long. Initially I thought that Powerwall was only the battery backup for solar panels (which we can’t get - bad exposure) but I assume that PW could be a separate “electron bucket” in a CT/PowerShare situation.

 

[mongo]

Yep I’m a “Installation Without Powerwall” situation. Power interruptions in our area don’t last too long. Initially I thought that Powerwall was only the battery backup for solar panels (which we can’t get - bad exposure) but I assume that PW could be a separate “electron bucket” in a CT/PowerShare situation.

Yeah, or you can have Powerwall without solar (but Powershare is cheaper if you already have the truck)

 

[UberNoob]

As others have said, the wire is fine. There will not be any more juice sent to the truck then what’s being sent to your car. Yes truck has 123kw battery and car 80 ish, just means it will take longer to fill / charge. Wall connectors max at 16/kw.
It maths out like this,
240 volts X 48 amps = 11,520 watts or 11.52 kw.

 

[CyberT1]

The Cybertruck battery size has nothing to with anything other than how long it takes to fully charge.
Unless it's a SR 3, they both have the same 48A max charger in the vehicle. What is your WC currently set to for charge current?
That cable is NM-B and it looks like it says 4AWG copper (CU) + 8AWG ground which is plenty large enough for the 60A amp circuit.

Has anyone been able to use power share to power your home I am still waiting for firmware now have my truck over a year

 

[mongo]

Has anyone been able to use power share to power your home I am still waiting for firmware now have my truck over a year

Yes, but my setup is only Powershare no Powerwalls nor solar.
What is your setup?

 

[SlegMD]

Waiting for power wall!

 

[CyberT1]

Yes, but my setup is only Powershare no Powerwalls nor solar.
What is your setup?

I have Solar Panels, Power Walls and charger. I was told two months ago that it will be only a matter of weekss.

 

[mongo]

I have Solar Panels, Power Walls and charger. I was told two months ago that it will be only a matter of weekss.

Tesla Powershare page is current saying later in 2025.
https://www.tesla.com/support/powershare

 

[pricedm]

If the cable is NM-B 4 AWG + 8 AWG ground, from a current perspective you're ok.

But I suspect the electrician wants to update wiring to individual THNN 4 AWG conductors (2 hots) plus a 6 or 8 AWG ground and put all of it in conduit (schedule 40) as required for THHN cables.

Existing cable likely has 2 hots, 1 neutral (not used by Tesla wall connector), and a ground.

Personally I am uncomfortable with that much current flowing in wires not in a conduit.

 

[CyberT1]

Tesla Powershare page is current saying later in 2025.
https://www.tesla.com/support/powershare

They keep moving the goal post. But that's What Tesla does

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