That is set by the L2 EVSE.

 

It can draw upto 48 amps at 11.5 kw which is negotiated with the EVSE.

 

You can use the standard three-pronged 120-volt plug (NEMA 5-15) for Level 1 charging at your home (up to 1.4 kW). The larger four-pronged plug (NEMA 14-50) is a 240-volt plug that provides Level 2 charging (7.7 kW), similar to AC charging stations you may find in public.
7.7 kw is 240v X 32 amps.
The car can charge at up to 48 amps on level 2 but the provided portable level 2 charger is fixed at 32 amps.

 

L2 is negotiated by the EVSE. L1 is set by the owner to be either 8 or 12 amps. L1 is 120 volts and the 8 amp setting is to protect older homes with unknown wiring quality.

 

Using a ChargePoint L2 charger on a dedicated 50Amp circuit I routinely pull 9.4 kW. Licensed electrician installed dedicated 50 amp circuit.

 

I have a ChargePoint L2 charger connected to a 50amp circuit. You can set the charging current provided by the charger using the Wi-Fi connection of the charger. I believe it defaults to 40A. Since I have plenty of time to charge my EV I have set it to 30A assuming the slower charging is better for battery life.