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Charger power needs

5187 Views 29 Replies 14 Participants Last post by  jonmetcalf
I understand it’s a 240 volt charger but how many amps need ? I don’t think I can get much more than 40 amps form my service? Does anybody know what is need to charge this truck .
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I would say your minimum should be 50A circuit for a 40A charger. You aren't going to fully charge (0-100%). Planning for that edge case will cause you to spend way more than you need to. If you want the ability to use the truck as a home power backup (yet to be fully confirmed or detailed), plan on a 100A circuit.
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I would say your minimum should be 50A circuit for a 40A charger. You aren't going to fully charge (0-100%). Planning for that edge case will cause you to spend way more than you need to. If you want the ability to use the truck as a home power backup (yet to be fully confirmed or detailed), plan on a 100A circuit.
Of course…it’s very rare that anyone will charge from zero, but it’s a data point to extrapolate from. I agree, a 40 amp charger/ 50 amp circuit should be fine for most people.
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Am I correct to think that a 200kW battery pack will cost roughly $20.00 to charge completely up, assuming the local utility rate is $0.10 per kWh?

Is that how the math works out, or am I looking at it too simplistically? I'm trying to make sure there are no surprises regarding the real world cost to charge one of these EVs.
Am I correct to think that a 200kW battery pack will cost roughly $20.00 to charge completely up, assuming the local utility rate is $0.10 per kWh?

Is that how the math works out, or am I looking at it too simplistically? I'm trying to make sure there are no surprises regarding the real world cost to charge one of these EVs.
Yes, that’s how it works out.
For reference, Electrify America chargers are $0.43 per kWh, or $0.31 per kWh with a $4/mo membership…so $60-$85 for a full charge.

it costs us about $5 to charge one of our Bolts at home every 2-3 days.
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Am I correct to think that a 200kW battery pack will cost roughly $20.00 to charge completely up, assuming the local utility rate is $0.10 per kWh?

Is that how the math works out, or am I looking at it too simplistically? I'm trying to make sure there are no surprises regarding the real world cost to charge one of these EVs.
Correct, but add about 5% for charging efficiency losses.

Yes, that’s how it works out.
For reference, Electrify America chargers are $0.43 per kWh, or $0.31 per kWh with a $4/mo membership…so $60-$85 for a full charge.
Yes, this is important to remember. If you don't have home charging you are going to spend significantly more to fast charge.
Yes, that’s how it works out.
For reference, Electrify America chargers are $0.43 per kWh, or $0.31 per kWh with a $4/mo membership…so $60-$85 for a full charge.

it costs us about $5 to charge one of our Bolts at home every 2-3 days.
Thanks. I need 350 miles of range to make it through a week. Sounds like I'll be spending $20 per week charging the Silverado at home, which would be a LOT better than the $110 per week my current truck takes. Wish I had the electric truck right now.
By time I get the Silverado my commute will no longer be 140 miles round trip 3x a week. If the Silverado actually gets around 400 miles (low 300 in reality) I won't be charging that often in a week.
The max most new EV will charge at is 48 or 50A, which would require a 60A circuit. I believe a 60A circuit and 80A circuit require the same size wire though, so might as well go with an 80A breaker (this is what I have), and be future proofed a little bit. I don't see the need to go to 100A for a faster charger even if it becomes available.

Currently I have a Chargepoint Flex, which is 50A.
60A wire size would be #4 AWG, 80A would be #2 AWG.
Hi to everyone.
I'm seeking for advice on how to power my new 24x50 metal structure with electricity. The structure is approximately 50' from the home and has a J-pipe and ground stake installed at the foundation's corner.
I'd prefer to run all of the outlets and lights myself before hiring someone to run the electricity from the home to the garage. Already purchased specific garage lightning here. I intend to use conduit tube for everything.
My queries are as follows:
-Will someone run the cable from the home to the garage and connect the circuit breaker if I do everything else?
- I'm having problems locating information on how to attach the receptacle boxes. Is there a minimum distance I must keep from the exterior wall?
-Is there a good method for me to wrap the conduit around each vertical support as I travel horizontally along the garage? I'm assuming you just bend the conduit around the supports?
- I do not intend to drywall the garage, but I may use plywood over the metal supports to attach cabinets, peg board, and other items. Is there anything specific I need to do if I'm running conduit beneath the wood?
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I guess that would be ideal for anyone with two EVs, which seems to be more common these days.

Will the Silverado EV be joining another EV in anyone's garage here?
The big brother SilEV will be joining a little sister Leaf.
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