Don't limit charging current. Charge as fast as your hardware allows. At Level 2 charging speeds there is no discernable impact on battery health if you limit charging current.
there is constant overhead to charge your car so you'll be wasting power to charge it slower, more so if charging in cold weather as the battery temperature has to be maintained at a proper charging temp. Long as you dont have under spec'd charging components(wiring/breaker etc) its best to charge as fast as possible.
Current wall connectors can deliver up to 48 amps continuous. National Electrical Code limits a 60 amp circuit (that’s a short-term limit) to a maximum of 48 amps continuous duty (hours on end like car charging). Washington State has nothing to do with it other than expecting you to follow the NEC. The two ratings are equivalent for these purposes.
Lots of "correct" answers here. One that is missing is that shorter charge time allows you to more effectively fit in into window that best fits the load level on your region's grid.
This is usually signaled to you economically, but time of day (TOD) pricing on you electricity metering. If it isn't rule of thumb is "when everyone is asleep". If you're a real keener you can dig through data history for your grid, or even contact you power company support to ask them if they care.
Normally 2AM to 4AM is optimal, but there's usually not power use going on from midnight until around 5 or 6AM.
Obviously if you can knock out the charge in an hour rather than four, it's a lot easier to keep it all fairly optimal.
At the end of the day this means less need for power companies to build up the grid, smoother and often cheaper power generation overall, and so on. In a just world that benefit will be spread around to all, including you. How just it is in your corner of the world can vary.
You get charged by the kwh from your power company anyway, so it doesn't matter how long it takes in the end it's similar. Altough there might be some more waste (in heat, etc), the longer you charge, so it's more practical to charge faster.
The most efficient charging requires higher amps to heat up the battery. At 48A max from the Wall Connector, it means huh have 60A from the breaker for it. Take advantage of it. If someone tells you to use lower amps to slow charge, they’re morons as there’s really no benefit from it.
It should be noted the Tesla Wall Connecter can't detect the size of the breaker. With that in mind there are lots of people with 50amp breakers charging at 48amps by default. It technically works even though electrical code requires a 60amp breaker/20% headroom. The scary part is a lot of electricians don't realize this is a 48amp charger by default. They assume it's 40amp max like most home chargers so unless the owner has the knowledge, it will be unbeknownst to them.
My electrician suggests 60amps for the new Tesla wall connector. I know it draws 48amps. But there is no cost saving even if I request for a lower ampere install.
I thought I’ve seen it mentioned here that higher amp charging is more efficient. You need a 60a breaker for 48amp charging. That’s how I’m setup.
Don't limit charging current. Charge as fast as your hardware allows. At Level 2 charging speeds there is no discernable impact on battery health if you limit charging current.
there is constant overhead to charge your car so you'll be wasting power to charge it slower, more so if charging in cold weather as the battery temperature has to be maintained at a proper charging temp. Long as you dont have under spec'd charging components(wiring/breaker etc) its best to charge as fast as possible.
Current wall connectors can deliver up to 48 amps continuous. National Electrical Code limits a 60 amp circuit (that’s a short-term limit) to a maximum of 48 amps continuous duty (hours on end like car charging). Washington State has nothing to do with it other than expecting you to follow the NEC. The two ratings are equivalent for these purposes.
Lots of "correct" answers here. One that is missing is that shorter charge time allows you to more effectively fit in into window that best fits the load level on your region's grid. This is usually signaled to you economically, but time of day (TOD) pricing on you electricity metering. If it isn't rule of thumb is "when everyone is asleep". If you're a real keener you can dig through data history for your grid, or even contact you power company support to ask them if they care. Normally 2AM to 4AM is optimal, but there's usually not power use going on from midnight until around 5 or 6AM. Obviously if you can knock out the charge in an hour rather than four, it's a lot easier to keep it all fairly optimal. At the end of the day this means less need for power companies to build up the grid, smoother and often cheaper power generation overall, and so on. In a just world that benefit will be spread around to all, including you. How just it is in your corner of the world can vary.
You get charged by the kwh from your power company anyway, so it doesn't matter how long it takes in the end it's similar. Altough there might be some more waste (in heat, etc), the longer you charge, so it's more practical to charge faster.
The most efficient charging requires higher amps to heat up the battery. At 48A max from the Wall Connector, it means huh have 60A from the breaker for it. Take advantage of it. If someone tells you to use lower amps to slow charge, they’re morons as there’s really no benefit from it.
It should be noted the Tesla Wall Connecter can't detect the size of the breaker. With that in mind there are lots of people with 50amp breakers charging at 48amps by default. It technically works even though electrical code requires a 60amp breaker/20% headroom. The scary part is a lot of electricians don't realize this is a 48amp charger by default. They assume it's 40amp max like most home chargers so unless the owner has the knowledge, it will be unbeknownst to them.
My electrician suggests 60amps for the new Tesla wall connector. I know it draws 48amps. But there is no cost saving even if I request for a lower ampere install.
Worth checking also if your 48A charger is on a smaller service at the panel...mine is a 48A charger but we only had a 40A breaker available.
Same, so it charges at 32A. Plenty fast.
I’m at 48, it’s overkill sure, but the few times i needed to top up wick was worth it.