Trying to get ahead of delivery -- home charger questions

[Saskateam]

Thank you. I am putting in a 125 amp sub panel in my garage to get ahead of the CT. I have found 2/0 tech cable for $10 a ft. So I will be more than able to charge while running an electric heater.

Advertisement

 

[SentinelOne]

Had a 100amp Circuit & Wall Charger installed today (for the model 3)....plan for a second wall charger to run in series on the same circuit when I get the CT.....the 3 maxes at 44 mi/hr charge (48 amps)....guessing the Cyber Truck with significantly larger battery will have a faster internal charger...otherwise it will take 14 hours for a full charge.

 

[ajdelange]

I think you are probably right about that. I am guessing that the maximum will be 72 A because that's 3 modules of 24 A each two of which are found in current production cars and three of which are found in some pre 2019 cars. The other possibility is 80 A, the maximum the HPWC will support. There were some early Model S than had 80 amp chargers. If the CT indeed consumes 500 Wh/mi then 72 A will charge at 72*240/500 = 34.6 mi/hr and 80 A will give 80*240/500 = 38.4 miles per hour for full charge times of 14.6 hrs or 13 hrs respectively (not that you would ever charge fully).

I just noticed from a picture of the Semi that it has multiple charging ports. Is that a possibility here?

 

[Garden_Aum]

I was being a bit tongue in cheek. I went to the linked website and it is pretty clear this is vaporware at this point in time. A few things would have to happen before using the car to power the house could happen:
1)The NFPA would have to change the NEC to allow powering the house from a vehicle. The current NEC requires that EVSE (the thing that goes on the wall that many people call a charger even though it isn't) installed in the US must have circuitry to PREVENT reverse flow from the car.
2)The manufacturers would have to come together with EVSE manufacturers and the utilities to come up with standards so that
Tom's car would interface with Dick's EVSE which in turn would not upset Harry's power company.
3)The manufacturers would have to start making cars that met the new standard

All this is, of course, doable. I think it is being done, at least on an experimental basis, in Asia and Europe.

I personally would rather have the 3rd generation Tesla power walls rather than using my vehicle as a battery storage system for my home. So, even if it were possible to use my vehicle as back up power I would not.

 

[dempster]

I just ordered a HPWC as well

 

[Teslaman]

I own a P85 Model S, My home charger is 80A, dialed down to 64A. I opted for the dual chargers, that they are no longer offering. I add miles at about 54mi/hr, also faster at superchargers. Would be really nice to see the dual chargers offered for the be Cybertruck.

 

[Saskateam]

I am planning to put in a 125 amp sub panel in the garage to accommodate charging. Looks like I should plan a 100amp breaker for charging the CT if it does come with the dual charger.

 

[SentinelOne]

Had a 100amp Circuit & Wall Charger installed today (for the model 3)....plan for a second wall charger to run in series on the same circuit when I get the CT.....the 3 maxes at 44 mi/hr charge (48 amps)....guessing the Cyber Truck with significantly larger battery will have a faster internal charger...otherwise it will take 14 hours for a full charge.

Ok, they just switched to a new wall charger that cant be wired together to share the 100amp circuit...and the new one has an 18' cord and is limited to 48amps....kind of screwed up my plans to add a second gen 2 HPWC to the one I just installed....so now I have to decide if I buy one now 2 years early or wait and see what the CT can use and if a diff charger or what happens in the future.....

 

[Saskateam]

Ok, they just switched to a new wall charger that cant be wired together to share the 100amp circuit...and the new one has an 18' cord and is limited to 48amps....kind of screwed up my plans to add a second gen 2 HPWC to the one I just installed....so now I have to decide if I buy one now 2 years early or wait and see what the CT can use and if a diff charger or what happens in the future.....

Take the wait and see approach. Or try to find an older charger.

 

[ajdelange]

It's true. Take everything I've said prior to this post and throw it out the window (which you may have done anyway)! The question is why they did this. First thought that always comes to mind is the lawyers suggesting that there may have been fires or overheating with the Gen II units. Or perhaps people had been hit with inspection violations when they installed them without the additional disconnect connect required over 60 A which some people did. Second thought is, of course, profitability. A 48 A contactor is cheaper than an 80 A contactor. So are terminal blocks etc.

Sharing will still be available but they want each unit on its own breaker. Perhaps the code has been interpreted in such a way that sharing of multiple units on the same breaker (as was done in Gen II) is not such a great idea. One gets effectively the same arrangement if a sub panel is used i.e. there is one breaker for Tesla chargers and its capacity will be shared with the differences being that the communication is done through WiFi and there is a separate disconnect (breaker) on the sub panel for each station.

As the fastest allowed charge rate in a current production Tesla is 48A there is no reduction in performance for any car you can buy today. But the biggest battery in the current portfolio is 100 kWh. The implications of 11 kW in a vehicle with a 200 kWh or larger battery that consumes 500 Wh/mi are charge times about double what one would experience with a Model X. This makes me wonder if the CT will have multiple ports as the Semi does. With that arrangement a multi Tesla family would install 2 Gen III HPWC and use one to charge each vehicle or both to charge the CT.

This all really suggests that people hold off on deciding on what to buy until more details on CT charging become available. Can't do that, of course, if you are buying a Tesla car now or in the near term unless you are willing to live with the UMC in the interim.

 

[ajdelange]

I am putting in a 125 amp sub panel in my garage to get ahead of the CT.

Where did you get your crystal ball?

 

[Saskateam]

Where did you get your crystal ball?

I am using a magic eight ball to predict the future. Can I afford the CT? “Seems doubtful”. Will it fit in the garage? “Likely.” Will it charge faster? “Yes” so I am planning for it anyways.

 

[Frank W]

I’m planning on waiting myself and here is a good reason why. https://apple.news/Ab54BL6s8Q9W6NtIEvFs3iQ

 

[Garden_Aum]

I had my wall charger installed on 19 January. So far I really like it. It is hooked up to a 40 amp circuit. I will have an additional wall charger installed on the other side of my garage after I take delivery of the Cyber Truck.

 

[Garden_Aum]

I’m planning on waiting myself and here is a good reason why. https://apple.news/Ab54BL6s8Q9W6NtIEvFs3iQ

I bet you the WIFI feature is to enable you to monitor and control the charge times on your vehicle. In addition to being very cool looking I bet you it will be very reliable. I recently had a Jukebox installed to charge my current PHEV; it also has a WIFI connection. So far, I have been very happy with it but, it thinks it is located in the wrong time zone. For some reason, it shows all times in PST and not EST. I may have to redo the setup procedures more slowly and look for the configuration option associated with time zones.