Getting 20.8 kW on my 22 kW AC charger.

[azraeil]

Just wondering what would be the reason for this. At all the 22 kW AC charger, be it my PMCC or those 22 kW AC chargers at the mall, I only get 20.8 kW. Not complaining because it’s just a 5% difference but just wondering how that works.

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[W1NGE]

Just wondering what would be the reason for this. At all the 22 kW AC charger, be it my PMCC or those 22 kW AC chargers at the mall, I only get 20.8 kW. Not complaining because it’s just a 5% difference but just wondering how that works.

This is normal.

Losses will be attributable to various things - supply constraints, cabling, evse efficiency, onboard AC charger constraints etc.

 

[azraeil]

This is normal.

Losses will be attributable to various things - supply constraints, cabling, evse efficiency, onboard AC charger constraints etc.

That's what I thought as well but the numbers are too consistent for it to be dependent on these possible parameters. On an 11 kW AC chargers, the max power received by the car is 10.4 kW (exactly half as the 20.8 kW received on the 22 kW AC Chargers). Seems to be a consistent 5.5% overhead.

 

[Pe4ivko]

Hi. It is not exactly about the topic, but don't wish to create new.
My question is: are there any way to select the limit for the power car takes from socket? If you use 11kW AC charger, it always tries to take 11? Or I can limit it to 6kW for example?

 

[azraeil]

Hi. It is not exactly about the topic, but don't wish to create new.
My question is: are there any way to select the limit for the power car takes from socket? If you use 11kW AC charger, it always tries to take 11? Or I can limit it to 6kW for example?

If you’re using the Porsche charger, you can reduce the Amp to get to your desired kW.

 

[W1NGE]

Hi. It is not exactly about the topic, but don't wish to create new.
My question is: are there any way to select the limit for the power car takes from socket? If you use 11kW AC charger, it always tries to take 11? Or I can limit it to 6kW for example?

Depends.

You need a 3 phase electricity supply to get with 11kW or 22kW. A single phase will provide 7.4kW.

Taycan has 11kW as standard or 22kW as an option.

Law of half's really. Reduce the flow by reducing the ampage 16A will half what you get.

There is no app control per se but your EVSE should allow you to throttle back.

 

[Pe4ivko]

You need a 3 phase electricity supply to get with 11kW or 22kW. A single phase will provide 7.4kW.

I have 3 phase, but they are really weak, theoretical 7kWt on each, but as I have also lot of staff sitting on them in the house, that is why I am wondering how to regulate it not to pop up CBs. So you mean I could half the power from charger? Like 11/2=5.5kWt from all 3 phases, so ~ 1.83kWt from each is that right?

 

[daveo4EV]

Hi. It is not exactly about the topic, but don't wish to create new.
My question is: are there any way to select the limit for the power car takes from socket? If you use 11kW AC charger, it always tries to take 11? Or I can limit it to 6kW for example?

Tesla has had this since inception - but to date Taycan does not offer this ability - the car will always charge at the max rate offered by the EVSE and there is no "in car" adjustment possible…

I miss this functionality greatly from my Tesla days…

 

[W1NGE]

I have 3 phase, but they are really weak, theoretical 7kWt on each, but as I have also lot of staff sitting on them in the house, that is why I am wondering how to regulate it not to pop up CBs. So you mean I could half the power from charger? Like 11/2=5.5kWt from all 3 phases, so ~ 1.83kWt from each is that right?

First of I'm not an expert with electricity so please seek professional advice.

Pretty sure your EVSE will let you reduce the amps drawn - Porsche Mobile Charger Plus and Connect do.

For example mine is set to 32A to get 7.4kW but I can set to 16A which will lead to 3.7kW for charging.

 

[Pe4ivko]

For example mine is set to 32A to get 7.4kW but I can set to 16A which will lead to 3.7kW for charging.

Thanks, I will need to check EVSE specs before buying.

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