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Does the tesla app resume the level of amp charging from the last session?

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It is supposed to remember the last charge rate at that location(or is it that particular charger, I can never remember which).

Note there seems to be two ways to interpret your question:

If you don't unplug the car from the charger for those few days, I'm pretty sure the rate will be remembered.

If you do unplug the car and go for a drive and replug, its supposed to remember, but is not super reliable. After a car reset or new firmware loaded into the car, you might find it starts charging at 32A again. If you know you don't (and won't) have the capacity for a 32A continuous draw, get a 14-30 outlet installed and avoid having to set it every time. Alternatively, get an HPWC and set it as if it has a 30A breaker. Another super-sleazy solution is to get a 14-50 to 14-30 adapter and then use the 14-30 adapter for the UMC.
 
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You answered it great thank you. I have it set up with a 6-20 now and 16 amps 240v seems fine for 16 miles an hour charging. I was thinking of adding a 14-50 for the 9 months of the year I don't run the AC. I don't run the AC overnight even in the summer but just to be safe. You're right though and I really only need a 14-30 outlet and it would be just fine. I noticed I charge a little faster than the stated amount so I'd probably get 24 miles an hour for the 14-30.