Determining Charging time to compute amperage

[sgriffin130]

And probably an odd question but can your PHEV handle 48 amps?

No. But my Mach E can.

Sponsored

 

[hawkeye3point1]

And probably an odd question but can your PHEV handle 48 amps?

Precisely, knowing what the MME draws tells us nothing about the PHEV charge rate is. My guess is the PHEV maxes out at 16A or 32A.

but I wish there was an easier way to determine it as I also have a PHEV that I plug in more often.

Now that FordPass provides charge rate in kWh, just do the KVA math to determine amperes for the MME. Just realize that amps drop off as full charge is approached, and utility voltage will impact kWh rate.

 

[sgriffin130]

Precisely, knowing what the MME draws tells us nothing about the PHEV charge rate is. My guess is the PHEV maxes out at 16A or 32A.
Yes. It’s around 16amps.


Now that FordPass provides charge rate in kWh, just do the KVA math to determine amperes for the MME. Just realize that amps drop off as full charge is approached, and utility voltage will impact kWh rate.

 

[AKgrampy]

No. But my Mach E can.

I realize that but I believe the EVSE only operates at one rate but perhaps I am wrong. I would think if you set it for 48 that would be a problem for your other vehicle.

 

[sgriffin130]

Don’t know if that’s true or not. The escape will take 32 amps which is adequate for both cars for my purposes. I was just curious more than anything and would like to have the option of changing it since I had it hardwired to take advantage of the higher amperage.

 

[Maquis]

I realize that but I believe the EVSE only operates at one rate but perhaps I am wrong. I would think if you set it for 48 that would be a problem for your other vehicle.

No….the EVSE basically “tells” the car the max it can deliver. The charger in the car will charge at the rate it wants to, up to the max.

 

[Mach-Lee]

32 amps would show up as about 7.6 kW on the charging power.

If the charger is hardwired on a 60A breaker, it should show about 11.4 kW power charging at 48A.

 

[generaltso]

I downloaded the Service App but it can't find the charger even though bluetooth is on and I was standing right next to the EVSE.

The Bluetooth radio in the ChargePoint may have gone to sleep. Try rebooting it and see if the app will then connect.

 

[generaltso]

I realize that but I believe the EVSE only operates at one rate but perhaps I am wrong.

Yes, you are wrong.

 

[sgriffin130]

32 amps would show up as about 7.6 kW on the charging power.

If the charger is hardwired on a 60A breaker, it should show about 11.4 kW power charging at 48A.

Thanks.

The Bluetooth radio in the ChargePoint may have gone to sleep. Try rebooting it and see if the app will then connect.

Thanks. I'll give it a try when I get a chance. Appreciate the help.

 

[CherryBomb]

No….the EVSE basically “tells” the car the max it can deliver. The charger in the car will charge at the rate it wants to, up to the max.

My ChargePoint is set to 40 amps and it charges my MME at 9.6 kW. It charges my son's 2019 Bolt at roughly 8 kW (32 amps). However, a level 2 AC EVSE can't tell a EV anything (it doesn't have two-way communication like a DC fast charger does) ... the car's internal charger controls it.

 

[CherryBomb]

Yes Thanks for your responses. Didn't know about the extra app. As I say, I got no response from ChargePoint. I believe the electrician set it for 48 amps at installation (60 amp Breaker with appropriate wiring) but Charge Point changed it to 32 amps.

My ChargePoint did the exact same thing. I set it to 40A when I installed it, but later determined it was charging at 32A. I installed the ChargePoint Service Pro app and confirmed it was set to 32A. I used the app to reset it to 40A and it's been fine since.

My iPhone could not find the ChargePoint when I initially tried to use the Service Pro app. So I shut the breaker off and on and I was then able to find the ChargePoint.

 

[Maquis]

My ChargePoint is set to 40 amps and it charges my MME at 9.6 kW. It charges my son's 2019 Bolt at roughly 8 kW (32 amps). However, a level 2 AC EVSE can't tell a EV anything (it doesn't have two-way communication like a DC fast charger does) ... the car's internal charger controls it.

If that were true, my Lightning would try to charge at 80A even though my EVSE is only capable of 48A.

 

[Bikespace]

My ChargePoint is set to 40 amps and it charges my MME at 9.6 kW. It charges my son's 2019 Bolt at roughly 8 kW (32 amps). However, a level 2 AC EVSE can't tell a EV anything (it doesn't have two-way communication like a DC fast charger does) ... the car's internal charger controls it.

Not quite. The Chargepoint doesn't charge anything, but it does tell the EV how much current is available. The car's charger pulls current up to that limit at it's discretion.

Your son's Bolt only draws 32 Amps. Your MME limits itself to 40 Amps based on what the Chargepoint EVSE told it was available.

 

[sgriffin130]

Not quite. The Chargepoint doesn't charge anything, but it does tell the EV how much current is available. The car's charger pulls current up to that limit at it's discretion.

Your son's Bolt only draws 32 Amps. Your MME limits itself to 40 Amps based on what the Chargepoint EVSE told it was available.

My ChargePoint did the exact same thing. I set it to 40A when I installed it, but later determined it was charging at 32A. I installed the ChargePoint Service Pro app and confirmed it was set to 32A. I used the app to reset it to 40A and it's been fine since.

My iPhone could not find the ChargePoint when I initially tried to use the Service Pro app. So I shut the breaker off and on and I was then able to find the ChargePoint.

I rebooted the ChargePoint and now Service Pro found it. It says it will now charge at a rate of 48 amps.

Sponsored