Help: 50amp 240v limiting to 32 amp only

[Argoniii]

Just installed black signature wall connector, on a 50A breaker on the sub panel (with the selector pin properly set to #8 for 50A breaker).
According to this chart Wall Connector the Model 3 should charge at 40A and add 37mi/h range, but the car shows only 32A max (approx 28-29mi/h).

Is this right? Why can't I charge at 40A?

Dis you set the wall charger correctly using the rotary amp settings and have you checked that you have not set a charge limit in your car itself.

 

[ZOMGVTEK]

In the US, loads that draw power for over 3 hours need to de-rate the circuit 20%. So a 40A circuit is required to pass 32A or less.

 

[Zaxxon]

In the US, loads that draw power for over 3 hours need to de-rate the circuit 20%. So a 40A circuit is required to pass 32A or less.

Correct but not relevant. This is a 50A circuit, so 40A is already the de-rated number. As others have said, if this is a lower-trim car, the vehicle chargers will take a max of 32A, which would explain the behavior being seen.

 

[henchook]

... if this is a lower-trim car, the vehicle chargers will take a max of 32A ...

This is a Model 3 Mid Range RWD.

 

[Zaxxon]

Yep, so 32A max.

 

[eprosenx]

Hopefully that's THHN wire in conduit... as was stated earlier in the thread, #8 romex(NM-B) is not allowed to have a 50A breaker.

I had to do a double take on that one myself, but I think he was referring to position #8 on the rotary dial selector, not AWG #8 wire.

Wire size was unspecified.

 

[Sophias_dad]

I had to do a double take on that one myself, but I think he was referring to position #8 on the rotary dial selector, not AWG #8 wire.

Wire size was unspecified.

Yes, its obvious on a reread... Thanks!