Recommended home charger system for Cybertruck?!

[cvalue13]

Personally I think even 30A would be fine for me.

dirty little secret: for a year I’ve been on my 120v trickle charger

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[CyberGus]

dirty little secret: for a year I’ve been on my 120v trickle charger

you should keep your trickle a secret

 

[cvalue13]

you should keep your trickle a secret

 

[PilotPete]

Slight nitpick, the verbiage you are looking for is "single phase", possibly "split-phase". Two pole breakers (or two single poles ganged) to give you L1 and L2. If a naive electrician took you at your word about needing two phase you could expect the install bill to skyrocket

The hardest part of two phase power is availability. Two phase has been almost completely replaced with 3 phase. Finding a local power company that will supply two phase might be impossible.

 

[HaulingAss]

mine is hooked up to a 60 amp breaker and can recharge my model y in about 6 hours from 20-80 percent...

Something is off with taking 6 hours to charge 60% of your Model Y capacity on a 60 amp circuit. It should be about 4 hours and 30 minutes or less.

Assumptions:

Battery capacity 81 kWh
Charge energy: 81 kWh x 60 percent (of total battery capacity)=48.6 kWh

Charge current 48 amps = 11.5 kW

Charge time = 48.6kWh/11.5 kW = 4.2 hours

Even if Tesla releases a 500 mile range Cybertruck as a first release configuration, I don't expect the battery to be bigger than 190 kWh. In 10 hours an existing Wall Connector on a 60 amp circuit will be able to replenish over 60% of the entire battery which should be more than enough for the vast majority of use cases. A few people who don't sleep and eat at home much, and drain the battery below 20%, or charge above 90%, might want more power available, assuming the Cybertruck will even be able to accept more than 48 amps of AC current.

 

[HaulingAss]

Obviously, what you NEED to charge your CT will vary based on your needs. But, the CT itself does not require any specific Amperage. Personally, I can't see why anyone would need more than 80 AMP service to charge at 60 Amps because 60 Amps at 220V for 10 hours is 132.2 KwH (yes, minus whatever inefficiency in the car charger in the car)

(amps = watts / volts OR Watts = Amps x Volts)

It's probable that the CT will not have a battery bigger than 188.86 KwH and since most people will keep their batteries between 10% and 90%, there is only a need to be able to charge 70% of the battery. IF you charge at 60 amps for 10 hours, you'll get 132.2 KwH which is 70% of 188.86 KwH.

Thus, unless you are planning on being home less than 10 hours, a charge capability larger than 60 amps doesn't make sense.

125 Amp circuit for one CT? 27.5 Kw per hour... 275 KwH per 10 hour night. Why?

Maybe if you are charging multiple vehicles AND you have one hell of a commute OR a business that uses multiple vehicles, it would make sense. But, for most people, it does not.

I just read your post after posting the above, and it's amazing how similar they are!

Great minds think alike! ?

 

[HaulingAss]

Bad advice, IMO. If you have a 50 amp outlet, and you want an easy install with no additional wire runs, remove the outlet and hardwire a Wall Connector. Most common 50 amp outlets are not great and they get worse over time. The electrical terminals on the Wall Connector are meant for extended high-amperage charging and are far more robust than you will find on any NEMA 14-50 outlet. And you avoid the added resistance of the prongs in the outlet too. They oxidize and their resistance increases which is just one more thing to maintain. Plus, it's not easy to clean the oxidation off the copper inside the outlet that makes contact with the prongs on the plug.

Hardwired charging stations are the best way to go for efficient and trouble-free charging. I will guarantee we see a large increase in house/garage/shop fires due to rising EV adoption, bigger EV's that charge for longer, and the popularity of using the NEMA 14-50 outlet for charging. Remember, this is your home or shop and maybe even your family we are talking about protecting. Plus, efficiency matters more when you have an EV that has higher consumption (charging more hours per day or at higher currents).

The future is that nearly everyone will drive pure electric vehicles so never hesitate to install nice charging equipment in your home or business.

 

[HaulingAss]

Everyone decides their own CT charging need and resource they want to have
Make your own decision
But
Like others agree, all of the big trucks release their own brand home charger when they release a vehicle that can USE it
The top trim CT with the max pack will need more than 48 amps
I predict there will be a gen 4/80 amp

This thread is merely, what is the advice on the CT forums app, for CT home charging
Advice, get ready for 80 amps

Yeah, while 48 amps will be fine for most people, almost everyone, I do think Tesla would equip a 500-mile Cybertruck with an 80 amp charger.

If Tesla goes back to 80 amps, the question is, would they install dual 40 amp chargers in the Cybertruck, like they offered as an option on the Model S for a period, or would it be a single 80 amp charger? The 80 amp charger is problematic if most people are using it at 48 amps or lower because the efficiency of chargers decline if they are used far below their rated capacity. This is an issue when you consider how many Cybertrucks Tesla is planning to deliver. But the dual chargers add complexity and expense.

 

[HaulingAss]

It doesn’t matter what the range of the EV is. What matters is how much power you consume on a nightly basis. The number of people who need 250 miles of range every single night is exceedingly small. The people who need that kind of charging know they need it and will buy it.

Unless you are driving for 5+ hours day after day, there is simply no point to paying extra for more than what the current chargers offer.

I’m not suggesting nobody needs more, simply that the people who need more are uncommon and can self-identify as being high mileage drivers.

While I understand that not everyone needs the maximum possible charging speed, and that most people don't need it very often, it's good to realize that more power is not just for people who need more power every single night, it's also for people who need more power occasionally, even if that occasionally is only a couple of times a month or a year.

It's also good to remember that the Cybertruck is a work truck and will come with 240V and 120V outlets so the battery may arrive home discharged lower than simple driving range would imply, depending upon your current job. It could be that you want to arrive home three nights in a row at 10% and charge to 90% so you can go do it again tomorrow. That may only happen periodically, but the ability to handle it, to already be set up for that use case, would be a huge convenience.

The other use case that likes higher charging speeds is Time of Use (TOU) rate schedules that electrical utilities are increasingly adopting by leveraging the value offered by smart electrical meters. The faster you can charge, the more charging you can fit into the most favorable time period(s). One would think that faster charging speeds is actually difficult for the grid, but it can actually help increase flexibility of when the electricity is consumed.

 

[Greshnab]

Something is off with taking 6 hours to charge 60% of your Model Y capacity on a 60 amp circuit. It should be about 4 hours and 30 minutes or less.

Assumptions:

Battery capacity 81 kWh
Charge energy: 81 kWh x 60 percent (of total battery capacity)=48.6 kWh

Charge current 48 amps = 11.5 kW

Charge time = 48.6kWh/11.5 kW = 4.2 hours

Even if Tesla releases a 500 mile range Cybertruck as a first release configuration, I don't expect the battery to be bigger than 190 kWh. In 10 hours an existing Wall Connector on a 60 amp circuit will be able to replenish over 60% of the entire battery which should be more than enough for the vast majority of use cases. A few people who don't sleep and eat at home much, and drain the battery below 20%, or charge above 90%, might want more power available, assuming the Cybertruck will even be able to accept more than 48 amps of AC current.

the fuse is 60 amps... it only pulls 49 amps at full charge.

 

[Crissa]

The 80 amp charger is problematic if most people are using it at 48 amps or lower because the efficiency of chargers decline if they are used far below their rated capacity.

No. Chargers work as efficiently as they're designed to, and basically have multiple circuits which 'add up' to the larger number. They should be just as efficient at any of those steps, if they were designed right.

-Crissa

 

[kpanda17]

Yeah, while 48 amps will be fine for most people, almost everyone, I do think Tesla would equip a 500-mile Cybertruck with an 80 amp charger.

If Tesla goes back to 80 amps, the question is, would they install dual 40 amp chargers in the Cybertruck, like they offered as an option on the Model S for a period, or would it be a single 80 amp charger? The 80 amp charger is problematic if most people are using it at 48 amps or lower because the efficiency of chargers decline if they are used far below their rated capacity. This is an issue when you consider how many Cybertrucks Tesla is planning to deliver. But the dual chargers add complexity and expense.

We will know soon

 

[azjohn]

Does anybody know if a 3rd generation wall EVSE can be modified to deliver 80amps?

 

[HaulingAss]

the fuse is 60 amps... it only pulls 49 amps at full charge.

If you bothered to look at the math I posted, instead of giving a superficial response, you will see I calculated your expected charging time using a charge current of 48 amps, the max allowed by code on a 60 amp circuit with a 60 amp breaker. I'm not sure where you got 49 amps from, but I imagine it could pull that much sometimes considering that line voltage can fluctuate a bit. In which case your charging time would be slightly shorter than I calculated.

What gives? I suspect that, like most of us, you don't know exactly how long it takes to charge your EV because there is no need to pay attention. And that's fine, which is why I was showing you how to do the math to calculate it.

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