Chargepoint flex charger shutting off after a 5 to 10 minute charge.

[Texas-E]

Per your recommendations I lower to 50 amps, charging for the last 20 minutes, you might just have hit a home run! Thanks

Well, it isn’t a fix but you have an idea of what the problem is now.

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[jsteach]

Well, it isn’t a fix but you have an idea of what the problem is now.

Correct !!
I had a Lic. contractor install 60 amp and was inspected by the city and
wiring and breakers are to code. I called charge point to escalate not charging at 60 amps. They gave me some horse crap about 50 amps service being the best output is within there tolerances and possibly will have to live with that.

 

[Texas-E]

Correct !!
I had a Lic. contractor install 60 amp and was inspected by the city
wiring and breakers are to code. I called charge point to escalate not charging at 60 amps. They gave me some horse crap about 50 amps service being the best output is within there tolerances and possibly will have to live with that.

The max input the Mach-E can accept is 48A. That requires a 60A service and a hardwired setup for the ChargePoint

Search the forum and you will find some threads about bad charge ports on the car. My advice is to read up and educate yourself.

 

[generaltso]

Correct !!
I had a Lic. contractor install 60 amp and was inspected by the city and
wiring and breakers are to code. I called charge point to escalate not charging at 60 amps. They gave me some horse crap about 50 amps service being the best output is within there tolerances and possibly will have to live with that.

Why do you think it’s horse crap that ChargePoint told you that your EVSE has a maximum charging rate of 50A? That’s what’s listed in the tech specs for the Home Flex. Even if it could charge faster than that, the Mach-E is limited to 48A (which requires a 60A circuit).

 

[Nemy]

They gave me some horse crap about 50 amps service being the best output is within there tolerances and possibly will have to live with that.

You need to realize that you bought a 50 amp EVSE... for a 48 amp car... on a 60 amp breaker... Every electrician, Chargepoint tech, and Ford tech is going to tell you the exact same thing.

The main thing is that I still don't even think that you've found the problem yet...

 

[jsteach]

You need to realize that you bought a 50 amp EVSE... for a 48 amp car... on a 60 amp breaker... Every electrician, Chargepoint tech, and Ford tech is going to tell you the exact same thing.

The main thing is that I still don't even think that you've found the problem yet...

When this was purchased from Chargepoint the instruction booklet said that the 60 amp breaker would charge at 48 amps max . 50 amp breaker was max a 40 amps. It no longer is sold that way. I just want what I paid for. I had my installers upgrade wiring and breakers for this. Really not the end of the world, its the principle. It was working fine for 16 months.

 

[generaltso]

When this was purchased from Chargepoint the instruction booklet said that the 60 amp breaker would charge at 48 amps max . 50 amp breaker was max a 40 amps. It no longer is sold that way. I just want what I paid for. I had my installers upgrade wiring and breakers for this. Really not the end of the world, its the principle. It was working fine for 16 months.

If you had your installers upgrade the wiring and breaker to 60A, the national electric code says that you can charge at 48A (continuous load is limited to 80% of the circuit size). Are you saying you have been charging at 60A for 16 months? You haven’t.

 

[jsteach]

If you had your installers upgrade the wiring and breaker to 60A, the national electric code says that you can charge at 48A (continuous load is limited to 80% of the circuit size). Are you saying you have been charging at 60A for 16 months? You haven’t.

No I have been charging at 48 amp , now down rating to 50 amps I will be charging at 40 amps.

 

[Nemy]

When this was purchased from Chargepoint the instruction booklet said that the 60 amp breaker would charge at 48 amps max . 50 amp breaker was max a 40 amps. It no longer is sold that way. I just want what I paid for. I had my installers upgrade wiring and breakers for this. Really not the end of the world, its the principle. It was working fine for 16 months.

It's still sold that way. https://www.chargepoint.com/drivers/home/resource

For 50 amp charging, Chargepoint says a 80 amp breaker. But it's definitely still capable of charging at 48 amps. You said Chargepoint said that you couldn't charge at 60 amps and that's absolutely correct for a 50 amp EVSE. So I think we're all confused based on your wording.

If you've actually been charging at 48 amps this whole time and it won't allow you to anymore (even with a new Chargepoint) then it is, indeed, time to look at the wiring or other issues that I mentioned. Ignoring it might lead to other issues down the road.

 

[SnBGC]

When this was purchased from Chargepoint the instruction booklet said that the 60 amp breaker would charge at 48 amps max . 50 amp breaker was max a 40 amps. It no longer is sold that way. I just want what I paid for. I had my installers upgrade wiring and breakers for this. Really not the end of the world, its the principle. It was working fine for 16 months.

It is still the same.
The ChargePoint Home Flex and CPF50 (Fleet/Family) are capable of supplying 50A. If your vehicle is capable of receiving that much current then the EVSE will need a 70A circuit. I see very few installed this way.

For many vehicles (Mach-E included), a maximum rate of 48A is sufficient. In that configuration a 60A circuit will be enough for the desired 48A rate.

For the CPHF, this is configured during the set up process in your app. It asks what size breaker and then configures the EVSE accordingly.

To be clear....this is just a setting that is saved in the EVSE. The charger in the car is responsible for regulating the power draw and keeping it inside the limits of safety. How does the car know what size circuit is installed? The EVSE tells the car the max amps that it can safely draw.

 

[jsteach]

It is still the same.
The ChargePoint Home Flex and CPF50 (Fleet/Family) are capable of supplying 50A. If your vehicle is capable of receiving that much current then the EVSE will need a 70A circuit. I see very few installed this way.

For many vehicles (Mach-E included), a maximum rate of 48A is sufficient. In that configuration a 60A circuit will be enough for the desired 48A rate.

For the CPHF, this is configured during the set up process in your app. It asks what size breaker and then configures the EVSE accordingly.

To be clear....this is just a setting that is saved in the EVSE. The charger in the car is responsible for regulating the power draw and keeping it inside the limits of safety. How does the car know what size circuit is installed? The EVSE tells the car the max amps that it can safely draw.

How different is charging at home with chargepoint and going to EA and charging ? With EA I have not had a charging issue with shutting down after a 10 minutes.

 

[jason330i]

No I have been charging at 48 amp , now down rating to 50 amps I will be charging at 40 amps.

I have a hardwired ChargePoint on a 60A breaker.

Just trying to brainstorm here:
Did they upgrade your panel to add this 60A breaker?
Did they use #6 or #4 wire?
No GFCI on the 60A breaker, right?

 

[SnBGC]

How different is charging at home with chargepoint and going to EA and charging ? With EA I have not had a charging issue with shutting down after a 10 minutes.

Very different.
At home, the charger is in the car so it takes 240v AC power to the car and the on board charger converts it to DC power to charge the battery. Around 11.5 kW at max rate.

At EA and other public DCFC sites, the electricity is converted to DC and dispensed to the car as DC power. It uses those two large pins in the charge port connector. The one under that flip down cover. Those pins go directly to the battery and bypass the on board charger. Charge rates with this method can be 10 or 20 times faster (peak speeds).

 

[jsteach]

I have a hardwired ChargePoint on a 60A breaker.

Just trying to brainstorm here:
Did they upgrade your panel to add this 60A breaker?
Did they use #6 or #4 wire?
No GFCI on the 60A breaker, right?

Thanks Jason. As I remember charge point said max size of wire was 6awg. My panel is a sub 100amp with lots of room. No GFCI. It worked great for 14 months ? I used a digital thermometer on wiring and breakers, nothing was really even warm under 89 degrees.

 

[jsteach]

Very different.
At home, the charger is in the car so it takes 240v AC power to the car and the on board charger converts it to DC power to charge the battery. Around 11.5 kW at max rate.

At EA and other public DCFC sites, the electricity is converted to DC and dispensed to the car as DC power. It uses those two large pins in the charge port connector. The one under that flip down cover. Those pins go directly to the battery and bypass the on board charger. Charge rates with this method can be 10 or 20 times faster (peak speeds).

Thanks Greg, need to find another 48amp charger to figure this out. Its possible MME has a charge port issue. When it was in 2 weeks ago for the HVBJB they said charge port was fine .

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