My understanding is that in much of Europe there is a preference for 11 kW (3 phase @ 16 A) rather than 7 kW (single phase at 32 A)
Yes, it's a difficult to solve equation for any EV manufacturer.
- In Europe in general, at public or private AC chargers, you neraly almost always get 3-phase 11 or 22 or sometimes 43 kW
- in The US, you get 120 or 240V single phase at home
- In countries like Germany, you always get 3-phase in residential -> 16A/3phase is the standard charging at home once you install an EVSE.
- In countries like France, 1phase is the overwhelming standard residential (3 phase connection is expensive here), so 32A/1ph charging is the standard at home.
Some EV manuf. like BMW or renault build in only 1 phase chargers on the base model, so charging at a 16A/3ph is limited to 16A/1 phase -> 3kW, that's boringly slow,esp. at germany's time based paid public chargers(and that's because of anti-EV regulations)
For the Tesla M3, it supports 16A/3ph or 32A/1ph, which is really great for all home configurations, with 2 slight disadvantages :
- The 32A/1ph adapter for the included EVSE has to be purchased separately (cheap, but difficult to get)
- The EVSE that Tesla includes in the car cannot charge 3-phase, making 3-phase home charging a separate expense for an EVSE (recommended anyway)
I suppose that Tesla was clever and switches 2 of the 3 single phase 16A chargers in parallel to provide the 32A/1phase with the same Hardware.
For now, I charge at 13A/1phase at home, it's slow but enough for all I do including getting to 100% before long trips.
Looking forward to get the 32A/1ph adapter.