Approximate Charge Time

[Mousehunter]

I don't know what the current electrical standard is - I do recall seeing pairs of bonded breakers in my current house - but it is older. Perhaps I read somewhere that someone ran a second set of wires (for 60 amp 240) to handle the 100 amp load, but then again while it might work, it might not be code.

Putting in the EV charger at our rental, the electrician apparently told the other owner that a 60 amp circuit needed to be hardwired, so we got a 45 amp circuit with an RV plug which our charger plugs into. That gave us an RV connection and the ability to pull the EV charger during tropical storms (a decent hurricane will put water under the rental).
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I drive a decent amount, which includes a LOT of trips that are back to back (I live in the middle of nowhere). So I do have a concern about not being to charge in less than 8hrs. Not uncommon to come in late from one trip, only to hit the road the next morning. I probably put in 4k miles over the Christmas holidays (it has not been fun), and was looking at another 600 miles (10hr drive) tomorrow - but I think that one is postponed (but doing 150 miles later this afternoon). In the past, my daily round trip commute was about 200 miles - and it was not uncommon to get home at 10pm only to leave at 6am, or to get home at 4pm, hit the road with the kids for after school activities, get back home at 8pm and leave at 11pm.

 

[LastDayScout]

I don't know what the current electrical standard is - I do recall seeing pairs of bonded breakers in my current house - but it is older. Perhaps I read somewhere that someone ran a second set of wires (for 60 amp 240) to handle the 100 amp load, but then again while it might work, it might not be code.

Putting in the EV charger at our rental, the electrician apparently told the other owner that a 60 amp circuit needed to be hardwired, so we got a 45 amp circuit with an RV plug which our charger plugs into. That gave us an RV connection and the ability to pull the EV charger during tropical storms (a decent hurricane will put water under the rental).
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I drive a decent amount, which includes a LOT of trips that are back to back (I live in the middle of nowhere). So I do have a concern about not being to charge in less than 8hrs. Not uncommon to come in late from one trip, only to hit the road the next morning. I probably put in 4k miles over the Christmas holidays (it has not been fun), and was looking at another 600 miles (10hr drive) tomorrow - but I think that one is postponed (but doing 150 miles later this afternoon). In the past, my daily round trip commute was about 200 miles - and it was not uncommon to get home at 10pm only to leave at 6am, or to get home at 4pm, hit the road with the kids for after school activities, get back home at 8pm and leave at 11pm.

I am not an expert, but I have had a good bit of experience with EV chargers. You may actually have a 48A or 50A breaker which will give you 40A. That is what I have at home. These are great charts that I found on the web. One is for plug in chargers and the other shows hardwired. I think if you can use that 40A circuit you will be fine 99% of the time. A lot of this depends on what the onboard charger on the Scout can accept for AC charging. I certainly think it will be in the 9+ kW range (hopefully).

 

[SpaceEVDriver]

I don't know what the current electrical standard is - I do recall seeing pairs of bonded breakers in my current house - but it is older. Perhaps I read somewhere that someone ran a second set of wires (for 60 amp 240) to handle the 100 amp load, but then again while it might work, it might not be code.

I won't speculate, but I've never seen a qualified, licensed, bonded electrician run a double-line circuit as a single branch circuit. Sounds like a recipe for someone to die or a fire to start. It's cheaper, easier, safer to just run the proper circuit.

Putting in the EV charger at our rental, the electrician apparently told the other owner that a 60 amp circuit needed to be hardwired, so we got a 45 amp circuit with an RV plug which our charger plugs into. That gave us an RV connection and the ability to pull the EV charger during tropical storms (a decent hurricane will put water under the rental).

Any appliance over 50A (>40A continuous) is typically required to be hardwired, yes.

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I drive a decent amount, which includes a LOT of trips that are back to back (I live in the middle of nowhere). So I do have a concern about not being to charge in less than 8hrs. Not uncommon to come in late from one trip, only to hit the road the next morning. I probably put in 4k miles over the Christmas holidays (it has not been fun), and was looking at another 600 miles (10hr drive) tomorrow - but I think that one is postponed (but doing 150 miles later this afternoon). In the past, my daily round trip commute was about 200 miles - and it was not uncommon to get home at 10pm only to leave at 6am, or to get home at 4pm, hit the road with the kids for after school activities, get back home at 8pm and leave at 11pm.

In that case, you definitely want at least a 60A hardwired circuit to give you 48A continuous EV charging.
If you have 8 hours overnight, you should be able to get 10 kW (after losses) * 8 hours = 80 kWh of charging on a L2 charger. If Scout offers a double charger, and you install an 80A (100A circuit) charger, then you should get about 19 kW * 8 hours = 150 or so kWh of charge overnight.

One strategy to consider is when you're out and about for kids' activities, bring a mobile charger. Even if it's only 120V, 1.44 kW, it'll give you a few kWh and that may be enough (it may not be either). Or you might drop off the kids, run to a DCFC for 20 minutes (at say 200 kW, you'd get 60 kWh recharge in about 20 minutes), then continue on your day.

Also, if Scout doesn't offer an 80A charging option, and you do such a large amount of of driving every day, the Scout might not be the best option for you. Lucid's way-overpriced 3-row Gravity is a thing of beauty. It has an L2 80A onboard charging solution. It also gets closer to 450 miles range and has a smaller battery (112-120 kWh) so recharge times are incredibly short compared to other large battery vehicles. Once the lower-trim level is released, it's not exactly affordable, but it'll be closer to almost-affordable.

 

[Logan]

I won't speculate, but I've never seen a qualified, licensed, bonded electrician run a double-line circuit as a single branch circuit. Sounds like a recipe for someone to die or a fire to start. It's cheaper, easier, safer to just run the proper circuit.



Any appliance over 50A (>40A continuous) is typically required to be hardwired, yes.



In that case, you definitely want at least a 60A hardwired circuit to give you 48A continuous EV charging.
If you have 8 hours overnight, you should be able to get 10 kW (after losses) * 8 hours = 80 kWh of charging on a L2 charger. If Scout offers a double charger, and you install an 80A (100A circuit) charger, then you should get about 19 kW * 8 hours = 150 or so kWh of charge overnight.

One strategy to consider is when you're out and about for kids' activities, bring a mobile charger. Even if it's only 120V, 1.44 kW, it'll give you a few kWh and that may be enough (it may not be either). Or you might drop off the kids, run to a DCFC for 20 minutes (at say 200 kW, you'd get 60 kWh recharge in about 20 minutes), then continue on your day.

Also, if Scout doesn't offer an 80A charging option, and you do such a large amount of of driving every day, the Scout might not be the best option for you. Lucid's way-overpriced 3-row Gravity is a thing of beauty. It has an L2 80A onboard charging solution. It also gets closer to 450 miles range and has a smaller battery (112-120 kWh) so recharge times are incredibly short compared to other large battery vehicles. Once the lower-trim level is released, it's not exactly affordable, but it'll be closer to almost-affordable.

Exactly this. Great post.

I've got a NEMA 14-50 in the garage, on a 40amp circuit. My L2 charger is set to 32amps, for a total of 7.7KW per hour of charging.

It does our PHEV that has a ~13.8KWh battery in under 2 hours. For the Harvesters approximated battery size of ~75KWh, it would be able to do that overnight.

For a full BEV Scout with a ~175KWh battery, that time to go from 0-100%, does start to balloon quite a bit (~22.75hrs). If that is the case, I might explore putting upgrading to a hardwired 60am circuit, and doing a 50amp charge, which would cut the recharge time to a ~14.5hrs.

 

[J Alynn]

@Jamie@ScoutMotors at some point prior to sales starting it would be great if your engineering team could provide recommendations for optimal electrical set up for at home charging. Letting folks like me with a basically full panel know what is the optimal set-up, etc…. I’m sure those who like electrical calculations can offer but knowing in time your teams will be charging them over and over during testing I’m sure someone will figure out the optimal charge scenario for draw/time. Just a thought

 

[SpaceEVDriver]

Exactly this. Great post.

I've got a NEMA 14-50 in the garage, on a 40amp circuit. My L2 charger is set to 32amps, for a total of 7.7KW per hour of charging.

It does our PHEV that has a ~13.8KWh battery in under 2 hours. For the Harvesters approximated battery size of ~75KWh, it would be able to do that overnight.

For a full BEV Scout with a ~175KWh battery, that time to go from 0-100%, does start to balloon quite a bit (~22.75hrs). If that is the case, I might explore putting upgrading to a hardwired 60am circuit, and doing a 50amp charge, which would cut the recharge time to a ~14.5hrs.

Note---for your future planning---the 80% (or 125%, depending on which direction you're thinking) code/safety rule applies.

A 60A circuit can provide only 48A of continuous current. But most onboard converters are limited to 48A anyway. If Scout goes with a dual onboard converter/charger setup, then you can go up to 80A with a 100A circuit.

 

[Logan]

Note---for your future planning---the 80% (or 125%, depending on which direction you're thinking) code/safety rule applies.

A 60A circuit can provide only 48A of continuous current. But most onboard converters are limited to 48A anyway. If Scout goes with a dual onboard converter/charger setup, then you can go up to 80A with a 100A circuit.

Yep, aware of that. Just… wrote the wrong thing last time, oops! 60 am circuit, 48amp to the charger, not 50 :/!

My 40amp circuit is currently doing 32amps for my charger.

 

[Mousehunter]

At this point in time, I am not overly worried. I will simply need to factor in the cost (time and $) of supercharger boosts and see if I should just take one of my gas vehicles. I will simply wire the new house to future proof it if possible. The closest superchargers are 10 miles from my current house, with 3 more at 60 miles E, W, and North. South is a bit week yet. South may be my Achilles's heel - as it is the direction I tow most (and a 300 mile round trip, and so far all day trips).

While I have seen 2 Buckee's in the last month with 800v Mercedes charging stations - today was the first one I saw with Gen 3.5 Tesla chargers. Was in a rush, so did not drive around the whole store to see if they were putting in the Mercedes charge stations as well.

 

[THil08]

I own a small older 2 story house, but i got all the panels and the wiring redone with a split panel architecture for each story. Seems i will be getting another panel for my home charging setup.