Setting up for charging in garage

[felixtb]

As I said above, I don't think the Taycan buffer is that large any more. back in September 2019 I agree it has a large buffer but in videos I have watched since then I see the car providing 90 kilowatt-hours. There should be both a top and bottom buffer that they're getting from the at 4.2 kilowatt-hours remaining.

Mmmm........ hear you. Not really interested in having the same problems as Louv though.....when the connect app is more usable then I’ll make my timers...... hopefully soon.

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[Cpoarchy]

I don’t have the garage setup yet, but did get a cable for the dryer, turned it down to 30 amps and charged. Worked great

 

[HelfFL]

I don’t have the garage setup yet, but did get a cable for the dryer, turned it down to 30 amps and charged. Worked great

How long did it take to charge and what was state of charge (SOC) when you began?

 

[wmras]

I don’t have the garage setup yet, but did get a cable for the dryer, turned it down to 30 amps and charged. Worked great

Be careful.
USA circuits are rated for 80% at continuous usage (more than 30 minutes)
A NEMA 14-30 socket (and likely circuit) is rated for 24 amps continuous and a NEMA 14-50 socket 40 amps.
Personal experience with a 20 amp circuit years ago - circuit breaker never tripped, but insulation on wires completely melted off in outlet box - miracle there was no fire..

 

[Cpoarchy]

How long did it take to charge and what was state of charge (SOC) when you began?

4 hours, but already had 190 miles on it, still better than 110

 

[Cpoarchy]

Be careful.
USA circuits are rated for 80% at continuous usage (more than 30 minutes)
A NEMA 14-30 socket (and likely circuit) is rated for 24 amps continuous and a NEMA 14-50 socket 40 amps.
Personal experience with a 20 amp circuit years ago - circuit breaker never tripped, but insulation on wires completely melted off in outlet box - miracle there was no fire..

Thanks for that, it did trip the breaker at 40 amps, I will dial it down to 20 to be safe. Good to know.

 

[ron_b]

Thanks for that, it did trip the breaker at 40 amps, I will dial it down to 20 to be safe. Good to know.

I'm very interested in seeing what the kilowatt rate is on the charger and the one in the car to see how much lost there is between the two. But be sure that the lights and HVAC are off in the car so no other large draw items. The reason I am a little concerned is the wire for the 25 foot cord did not look too large from the pictures I have seen. I bought a Chinese charger that would do 32 amps and it's cord is very beefy.

 

[feye]

As I said above, I don't think the Taycan buffer is that large any more. back in September 2019 I agree it has a large buffer but in videos I have watched since then I see the car providing 90 kilowatt-hours. There should be both a top and bottom buffer that they're getting from the at 4.2 kilowatt-hours remaining.

True. But the actual physical capacity of the battery might also be a bit larger than stated. We cannot use the car to measure it, can we?

 

[Cpoarchy]

I'm very interested in seeing what the kilowatt rate is on the charger and the one in the car to see how much lost there is between the two. But be sure that the lights and HVAC are off in the car so no other large draw items. The reason I am a little concerned is the wire for the 25 foot cord did not look too large from the pictures I have seen. I bought a Chinese charger that would do 32 amps and it's cord is very beefy.

I will check that next time I charge and let you know, yeah I usually power off the car when I charge, I do have the 25 ft cord. Seems heavy to me, but don't know what to compare it to.

 

[ron_b]

I will check that next time I charge and let you know, yeah I usually power off the car when I charge, I do have the 25 ft cord. Seems heavy to me, but don't know what to compare it to.

Sure, hard to compare. Here are photos of my plug and cable. The cable diameter is 5/8" and labels inside are 6.0mm² which is approx 10AWG so 50amp rated.

 

[ron_b]

True. But the actual physical capacity of the battery might also be a bit larger than stated. We cannot use the car to measure it, can we?

True, the overall total capacity can only be known by taking what Porsche says or disassembly. I frankly believe the 93.4kWh. to attempt to find the battery capacity you can drive to 0% then charge on a charger that tracks total kWh like the Porsche Connect Charger and compensate using the kW rating shown in car vs the kW rating shown at the charger at some moment in time during the charging process.

 

[Miwa]

True, the overall total capacity can only be known by taking what Porsche says or disassembly. I frankly believe the 93.4kWh. to attempt to find the battery capacity you can drive to 0% then charge on a charger that tracks total kWh like the Porsche Connect Charger and compensate using the kW rating shown in car vs the kW rating shown at the charger at some moment in time during the charging process.

That assumes 100% efficiency in charging, and 100% accuracy in the charger's measuring circuit...

 

[ron_b]

That assumes 100% efficiency in charging, and 100% accuracy in the charger's measuring circuit...

It assumes accuracy in the measurement circuitry but not the efficiency. That's why I said to get the kW rating on the charger like 9.6kW and what car shows as charging rate like 8.5kW then efficiency is 8.6/9.6 x 92kWh to get projected usable battery.

 

[wmras]

The cable diameter is 5/8" and labels inside are 6.0mm² which is approx 10AWG so 50amp rated.

10 Gauge wire (10 AWG) in the USA is rated for a 30 amp circuit, 24 amps continuous. You double (or halve if smaller) the current every 3 gauges. A 60 amp circuit would require 7 gauge wire. A 50 amp circuit (40 amps continuous, e.g., NEMA 14-50 socket or plug) would require 8 gauge wire.

 

[Scandinavian]

Sure, hard to compare. Here are photos of my plug and cable. The cable diameter is 5/8" and labels inside are 6.0mm² which is approx 10AWG so 50amp rated.

@Ron-b here are two photos of my cable in Europe. Rated at 480 volt and 32 amp. It is three phase and came with the Porsche charger that is good for 22 kW charge! The cable is the 25 foot one, (7.5) meters. I have no idea what that will mean in the US though if you do not have three phase?

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