I see on Tesla's website that the HPWC unit has been redesigned and is even cheaper now. Page 5 of the manual states at the top, "The maximum power rating for the Wall Connector is 20 kW or 80A at 250V AC single-phase power. Your vehicle can charge from 200V to 277V single-phase power." It just so happens I am looking at getting one of these units for workplace charging and they are putting in a new transformer for the charging station. The place currently has 208 VAC power and since they were putting in a new transformer I asked whether it could be 240 VAC instead of 208 since that'd give the EVs charging more watts. For this location the electrician said it would be far cheaper for him to provide single phase 208 VAC or single phase 277 VAC to the HPWC. I have been a long-time EV owner and am very familiar with how much quicker charging is on 240VAC (or even in some cases at RV parks where I've seen 250 VAC displayed) compared with 208VAC due to the increased total watts when multiplied by the higher voltage. I have never personally encountered or charged from 277VAC single-phase and wasn't honestly aware of it or that the car could charge from it but it says it's okay right in the new HPWC manual! My question is has anyone here actually charged from 277VAC with their Tesla? Also, 80 Amps * 277 V = 22,160 kW That is greater than the 20kW the car says it is capable of so I'm curious if the car actually can do 22,160 watts or if it cuts back the amperage at 277VAC so as not to exceed 20kW? 80A of 208 V = only 16,640 watts so there is a substantial difference of 5.5kW between those options which would lead me to have them wire it for the 277VAC but I'm wondering what other people's experience has been or if it is limited to 20kW anyway?