11kW Charge Rate From Ford 48A EVSE?

[johnnycombo]

You may want to reduce the amperage to what you actually need, less heat, less wear and tear on the equipment.

Sponsored

 

[E90alex]

You may want to reduce the amperage to what you actually need, less heat, less wear and tear on the equipment.

You need an industrial or EV rated outlet, not those cheap $10 ones. Should cost at least $50-60 if not more.

 

[Space_Pony]

You need an industrial or EV rated outlet, not those cheap $10 ones. Should cost at least $50-60 if not more.

You may want to reduce the amperage to what you actually need, less heat, less wear and tear on the equipment.

If you charge at 48 amps an inferior connection like you pictured is not used. A 48 amp EVSE is hardwired so it is safer than using an outlet like that. The MME was designed for 48 amp charging so that's what I use.

 

[Feliks]

Folks:

I’ve been noticing on my new ‘25 GT that I’m only getting ~9.8kW or so charge rate from my Ford EVSE on a 60 amp circuit. Should I be expecting the full 11kW from the EVSE to the onboard charger?

Please advise.

Thanks!

This is correct. For sustained load the charger is down rated to 80% load (per code). So 48 amps, is ~10kW of charge.

 

[johnnycombo]

If you charge at 48 amps an inferior connection like you pictured is not used. A 48 amp EVSE is hardwired so it is safer than using an outlet like that. The MME was designed for 48 amp charging so that's what I use.

Just a picture from the interweb! My point is why push the limits if you don’t really need it.

 

[johnnycombo]

You need an industrial or EV rated outlet, not those cheap $10 ones. Should cost at least $50-60 if not more.

Just a picture not mine! Another thing people should think about is a yearly inspection.

 

[jav_eee]

You may want to reduce the amperage to what you actually need, less heat, less wear and tear on the equipment.

48 amps or bust!

 

[Richmond2000]

at work we have welders on 10-50 plugs and it is common to burn out the plugs and the welders are NOT on for hours a day

 

[ericNdfw]

This is correct. For sustained load the charger is down rated to 80% load (per code). So 48 amps, is ~10kW of charge.

Code is about the wiring in the building, not this. (It’s why a 48A EVSE needs to be hard wired to a 60A breaker.)

 

[Mach-Lee]

Folks:

I’ve been noticing on my new ‘25 GT that I’m only getting ~9.8kW or so charge rate from my Ford EVSE on a 60 amp circuit. Should I be expecting the full 11kW from the EVSE to the onboard charger?

Please advise.

Thanks!

That is a bit low (should be around 10.5 kW for 48A), which would indicate there is a significant voltage sag somewhere (car is only getting ~217V) if it's correctly set up for 48A. Please check all connections (main panel to car) for excessive heat after several hours of charging. The electrician may also need to check the terminal voltage under load.

 

[cswebster]

The app reports the energy entering the battery so there is some AC to DC conversion loss there.

Thanks for the reply!

 

[cswebster]

The charger has configuration setting (DIP switches) to configure the amperage that the car is allowed to draw. Check the book that came with the charger. You can open it and compare to the DIP switches settings to verify that they are set correctly. If it is set to 48 amps ... then your car gets 48 amps X whatever voltage the utility company is supplying.

I saw “whatever voltage” because 240v power is often not precisely 240v. Utility companies can vary … I think it‘s +/- 5%. If it is exactly 240v (I’ve tested mine a few times with my multimeter and it often shows 245v — still within spec.) then you get 11.4 kW that the car will “draw”.

There are also some charging losses (resistance that converts to heat instead of stored energy) … so typically what the FordPass app reports will be a little less than the draw.

Thanks. Good suggestion

That is a bit low (should be around 10.5 kW for 48A), which would indicate there is a significant voltage sag somewhere (car is only getting ~217V) if it's correctly set up for 48A. Please check all connections (main panel to car) for excessive heat after several hours of charging. The electrician may also need to check the terminal voltage under load.

Thanks. This has been about the same since I had the EVSE installed in ‘21 for my first Mach e. Had a professional install it of course, and this is the second one since the first one had a fried comms board (but charged fine) and Ford replaced the unit no charge after 3 years. That was fun trying to prove that one to Ford!

 

[cswebster]

Thanks. Good suggestion

Thanks. This has been about the same since I had the EVSE installed in ‘21 for my first Mach e. Had a professional install it of course, and this is the second one since the first one had a fried comms board (but charged fine) and Ford replaced the unit no charge after 3 years. That was fun trying to prove that one to Ford!

Also, the power company is upgrading the high tension lines on my road to 11kv so maybe I’ll see better performance then? Infrastructure around here is worse than what the crews saw in NOLA when they went down for Katrina, about time they upgraded.

 

[ChasingCoral]

Folks:

I’ve been noticing on my new ‘25 GT that I’m only getting ~9.8kW or so charge rate from my Ford EVSE on a 60 amp circuit. Should I be expecting the full 11kW from the EVSE to the onboard charger?

Please advise.

Thanks!

It’s been a hot summer and your car may be running cooling during the charge session. That will reduce the power that reaches the battery.

Set your charging to start at midnight when temperature is down and car is cool. See if the charge rate goes back up.

 

[Trielectric]

The code where I live is a 60 amp breaker should never have more load than 75% of that 60amps.
60amp x 240vac(where I live we are always above 240vac)=14400watts x .75allowed load=10.8kw. 9.8kw after going through wiring losses and charging station losses, I would say is good.

Sponsored