ChargePoint HomeFlex HARDWIRED 80amps

[TaxmanHog]

Fun Fact, model year 2024 Lightnings show the energy input to the battery in the IPC {Instrument Panel Cluster} aka 'Dash board' as OP and another member mentions above.

Another one of those features older model year owners would love to have @Ford Motor Company.

My FCSP wired and configured for 80 amp input current @ 240v normally draws ~75 amps or 18KW
The amount of energy deposited to the battery is about 91% after conversion losses, so that value shown on the '24 dashboard is likely lower, IMHO if you're seeing 45 out of an expected 48 amps, it's within the expected tolerance or conversion loss value, you're doing just fine.

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[NYCLABORER79]

So the charger says gauges 6-12. Is that because the terminals can only accept those gauge sizes? 12 gauge certainly wouldn't be right for this level of charger. And I'm no electrician, but if 4 gauge wire fit the terminals, how the heck would that present any problem?

#4 fits but very tight. Now within 3 yr something happens. Chargepoint ask for photos of the issue. Now they see something that is not listed in there charger or Manual. That can easily drop the warranty. If you see in the install pics above its no big deal re doing it. After talking to some of the guys here ( which their were really helpful and nice) its really no big difference on charging. I rather have it wired safe before a fire hazard happens.

 

[NYCLABORER79]

Fun Fact, model year 2024 Lightnings show the energy input to the battery in the IPC {Instrument Panel Cluster} aka 'Dash board' as OP and another member mentions above.

Another one of those features older model year owners would love to have @Ford Motor Company.

My FCSP wired and configured for 80 amp input current @ 240v normally draws ~75 amps or 18KW
The amount of energy deposited to the battery is about 91% after conversion losses, so that value shown on the '24 dashboard is likely lower, IMHO if you're seeing 45 out of an expected 48 amps, it's within the expected tolerance or conversion loss value, you're doing just fine.

Yes it happens when getting in and turning on truck top right corner

 

[Pioneer74]

So the charger says gauges 6-12. Is that because the terminals can only accept those gauge sizes? 12 gauge certainly wouldn't be right for this level of charger. And I'm no electrician, but if 4 gauge wire fit the terminals, how the heck would that present any problem?

12 gauge wire is good for 20 amps. Derate 20%, and you have 16. You can set the EVSE to max out at 16 amps.

 

[Runaway Tractor]

And I'm no electrician, but if 4 gauge wire fit the terminals, how the heck would that present any problem?

Because the ability to shove it in the hole is not the same thing as the lug being able to properly torque down on it making adequate secure contact. Put another way, it did not fit, it was improperly shoved in

 

[StevenC56]

12 gauge wire is good for 20 amps. Derate 20%, and you have 16. You can set the EVSE to max out at 16 amps.

How would that even be acceptable? If you used 12 gauge wire, how would the charger even know if you didn't permanently change the max settings somehow? Wouldn't that potentially be a dangerous situation? I'm pretty sure most of these chargers recommend a large enough wire size that would support the chargers maximum rate. If it's charging at a lower rate, no harm no foul using the larger gauge wire.

 

[Pioneer74]

How would that even be acceptable? If you used 12 gauge wire, how would the charger even know if you didn't permanently change the max settings somehow? Wouldn't that potentially be a dangerous situation? I'm pretty sure most of these chargers recommend a large enough wire size that would support the chargers maximum rate. If it's charging at a lower rate, no harm no foul using the larger gauge wire.

How is it not acceptable? You set the EVSE up for the max allowed by the circuit when you commission it. If somebody changes it, and the circuit can't handle it, the breaker does it's job to protect the wire and opens the circuit.

 

[StevenC56]

How is it not acceptable? You set the EVSE up for the max allowed by the circuit when you commission it. If somebody changes it, and the circuit can't handle it, the breaker does it's job to protect the wire and opens the circuit.

OK, so if you use 12 gauge wire does it tell you to use a 20 amp breaker in the installation instructions?

 

[Runaway Tractor]

Lots of EV chargers have a hardware or software setting to set the max amps for exactly this purpose. Yes it is in the manual. This is very handy if you have to use an existing circuit for the charger. Panel on the other side of a finished basement making it impractical or too expensive to upgrade for example. Very common and nothing wrong with it.

The FCSP, Tesla charger, and most major brand have this ability.

 

[Pioneer74]

OK, so if you use 12 gauge wire does it tell you to use a 20 amp breaker in the installation instructions?

It's not the equipment suppliers responsibility to quote the NEC code. If somebody doesn't know that a 12 gauge wire has a 20 amp allowable ampacity rating, they shouldn't be installing it.

 

[StevenC56]

Got it. My L2 charger will do a maximum of 48 amps and just flat tells you to use a 60 amp breaker and no smaller than 6 gauge wiring. When I set it for 48 amps, it usually starts at 45-46 and steps itself down as the truck approaches it's preset charge level.

 

[VAF84]

So it's official that ChargePoint Flex charger does not output 80amps. You all just saved me a wasted purchase. I was about to buy that model assuming the 80amp output. I guess that just leaves Grizzl-e as the only non Ford/GM charging option to get 80amp output?

 

[Runaway Tractor]

Got it. My L2 charger will do a maximum of 48 amps and just flat tells you to use a 60 amp breaker and no smaller than 6 gauge wiring. When I set it for 48 amps, it usually starts at 45-46 and steps itself down as the truck approaches it's preset charge level.

Your charger manufacturer did not design it to to have a reliable permanent current derating, whether by a hardware setting or 100% reliable software setting.. If they did, the manual would allow smaller wire to match the max current setting. So in your case, it must be installed for max current as you did.

 

[NYCLABORER79]

So it's official that ChargePoint Flex charger does not output 80amps. You all just saved me a wasted purchase. I was about to buy that model assuming the 80amp output. I guess that just leaves Grizzl-e as the only non Ford/GM charging option to get 80amp output?

Pretty much, if it wasnt for con Edison rebates and incentives for charging here in NYC i wouldn of got something else

 

[mr.Magoo]

I guess that just leaves Grizzl-e as the only non Ford/GM charging option to get 80amp output?

I belive Leviton have one too.
https://leviton.com/products/ev80w

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