planet4ever wrote:So, as you guys now agree, the EVSE tells the charger what it can pull but it is the charger itself that actually controls how much it does pull. So far as I know, the SAE standard doesn't force the charger to pull the maximum the EVSE allows. Is it trivial for the charger to provide both 12A and 16A charging? If not, what are the chances that passing the 16A signal from the EVSE will make any difference at all in how fast you charge from 120v?
I think passing a 16A signal from the EVSE to the charger in the car while using 120V *should* work, but then again, we don't know if Nissan has (or will by firmware change) include an additional safeguard of downgrading to 12A for Level 1. I hope they don't. I hope they simply accept the EVSE's signal as "gospel" and draw (subject to the initial 3.3kW limit) that much current. If you use Nissan's included L1 EVSE it will ( I agree ) be hard-coded to signal 12A. If you build your own EVSE and signal 16A the car's charger should be drawing 16A.
But what happens if you provide 240V at 16A ? That's 3.84kW, exceeding the 3.3kW. In that case the charger will limit the current (I doubt it can limit the voltage) to 13.75A (3300/240), or more likely 12A (the next more logical lower increment).