I think what Glenn said may need further clarification. I have a RAV4 EV and also charge it at 32A from my JuiceBox, although it is capable of charging the car at 40A. The JB can have its current limiter set by the end user quite easily when it has the LCD and Remote Key Fob options. I have both. Therefore, I set the current limit to 32A. Using the buttons on the key fob, the limit can be changed "on the fly", in 1A increments. However, 32A is the maximum current that can be safely provided from my home's breaker box to the end of the J1772 cable and everything in between (i.e. the infrastructure wiring, AC outlet, input cord, and L2 EVSE). However, I still have the means of charging my RAV4 EV at 40A, by traveling with my JB in the car and plugging in to "50A" 240V AC outlet available at most RV Parks. Hence, the advantage of a "plug-in" EVSE is its PORTABILITY, which means the current rating of the AC outlet, fixed wiring and circuit breaker protection is really just another limiting factor. This is also why a convenient way to adjust the EVSE's internal current limiting - such as with a remote key fob in the case of a JuiceBox - is such an advantageous feature.