daveo4EV
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- First Name
- David
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It's been my experience that while most EV's will charge at 240 volts 16, 24, 32 & 40 amps - these are well tested and work well and always match the EVSE capability to the car's requested charge rate - there are lower end plugs (amp wise) and EV behavior varies widely in this space.
I speak of the following plugs
NEMA 5-15 - 15 amp 120 volt circuit - 12 amps is the maximum charge rate (1.44 kW)
NEMA 5-20 - 20 amp 120 volt circuit - 16 amps is the maximum charge rate (1.92 kW)
NEMA 5-15 or 5-20 plug running 240 volts (not a common configuration but possible)
NEMA TT-30 - 120 volts @ 30 amps (2.88 kW)
NEMA 6-20 plug running 240 volts @ 16 amps (3.84 kW)
there are for example 120 volt 30 amp feeds in RV parks - this is 2.88 kW even though it's only 120 volts - it would be interesting to know if the Taycan charges at 2.88 kW when plugged into an EVSE offering 120 volts @ 24 amps (2.88 kW)
there is a popular EV for example that when plugged into an EVSE offering 120- volts @ 1.92 kW - will still only charge at 1.44 kW - which is frustrating - and this same EV when presented a 120 volt 2.88 kW EVSE still only charges at 1.44 kW - or 1/2 the possible charge rate…
has anyone tested the actual charge rate of the Taycan with an EVSE running at these capacities? I'd be interested to know if the Taycan always maximizes the charge rate based on what the EVSE reports to be it's maximum charge rate.
why do I ask - well I've owned other EV's that if they see a 120 volt "feed" they will never charge at more than 1.44 kW - even when the EVSE is capable of providing more power.
Also some EVSE's come with say a 12 amp limit, but they are dual voltage (120 or 240) volt - and they will charge at either 1.44 kW or 2.88 kW depending on the voltage. Now for this to work - two things have to happen the EVSE as to report to the car the correct volts/amps it can provide, and the car's charging software has to attempt to draw the higher current to charge the battery - sadly many EV's only pick "common" volts/amp combinations, and don't dynamically adjust to the actual volts/amps being reported by the EVSE…
has anyone charged a Taycan on:
@ NEMA 5-20 EVSE @ 1.92 kW and seen 1.92 kW (or close) as the charge rate reported by the car
@ NEMA 5-15 EVSE @ 2.88 kW (240 volt) and seen 2.88 kW (or close) as the charge rate reported by the car
@NEAM TT-30 EVSE @ 2.88 kW (120 volt) and seen 2.88 kW (or close) as the charge rate reported by the car
@ NEMA 6-20 EVSE @ 3.84 kW (240 volt) and seen 3.84 kW (or close as the charge rate reported by the car
now these are all slow charge rates, and by no means ideal - but they are charge rates I have encountered in the wild - and it's always a bit disapointing with the car is charging slower than it could be charging because the vendor never tested/adjusted the charging software to dynamically adapt to the actual electrical current being provided.
this is trivia in the grand scheme of things - but inquiring minds want to know!
I speak of the following plugs
NEMA 5-15 - 15 amp 120 volt circuit - 12 amps is the maximum charge rate (1.44 kW)
NEMA 5-20 - 20 amp 120 volt circuit - 16 amps is the maximum charge rate (1.92 kW)
NEMA 5-15 or 5-20 plug running 240 volts (not a common configuration but possible)
NEMA TT-30 - 120 volts @ 30 amps (2.88 kW)
NEMA 6-20 plug running 240 volts @ 16 amps (3.84 kW)
there are for example 120 volt 30 amp feeds in RV parks - this is 2.88 kW even though it's only 120 volts - it would be interesting to know if the Taycan charges at 2.88 kW when plugged into an EVSE offering 120 volts @ 24 amps (2.88 kW)
there is a popular EV for example that when plugged into an EVSE offering 120- volts @ 1.92 kW - will still only charge at 1.44 kW - which is frustrating - and this same EV when presented a 120 volt 2.88 kW EVSE still only charges at 1.44 kW - or 1/2 the possible charge rate…
has anyone tested the actual charge rate of the Taycan with an EVSE running at these capacities? I'd be interested to know if the Taycan always maximizes the charge rate based on what the EVSE reports to be it's maximum charge rate.
why do I ask - well I've owned other EV's that if they see a 120 volt "feed" they will never charge at more than 1.44 kW - even when the EVSE is capable of providing more power.
Also some EVSE's come with say a 12 amp limit, but they are dual voltage (120 or 240) volt - and they will charge at either 1.44 kW or 2.88 kW depending on the voltage. Now for this to work - two things have to happen the EVSE as to report to the car the correct volts/amps it can provide, and the car's charging software has to attempt to draw the higher current to charge the battery - sadly many EV's only pick "common" volts/amp combinations, and don't dynamically adjust to the actual volts/amps being reported by the EVSE…
has anyone charged a Taycan on:
@ NEMA 5-20 EVSE @ 1.92 kW and seen 1.92 kW (or close) as the charge rate reported by the car
@ NEMA 5-15 EVSE @ 2.88 kW (240 volt) and seen 2.88 kW (or close) as the charge rate reported by the car
@NEAM TT-30 EVSE @ 2.88 kW (120 volt) and seen 2.88 kW (or close) as the charge rate reported by the car
@ NEMA 6-20 EVSE @ 3.84 kW (240 volt) and seen 3.84 kW (or close as the charge rate reported by the car
now these are all slow charge rates, and by no means ideal - but they are charge rates I have encountered in the wild - and it's always a bit disapointing with the car is charging slower than it could be charging because the vendor never tested/adjusted the charging software to dynamically adapt to the actual electrical current being provided.
this is trivia in the grand scheme of things - but inquiring minds want to know!
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