According to this site: 3 Phase Basics three phase conductors need only be 75% the size of conductors for single phase for the same power output, but charging the roadster's battery in an hour would need about three times as much power (assuming no extra for battery cooling) as the present 70A 240V fast charger.
So if Tesla do go with faster charging (which, according to Elon is only really necessary for 1% of trips) then even with three phase the charging cable will be bulkier/heavier than the present design.
They will have to design some sort of on-board, powered reel to store, dispense and retract the heavier charging cable - which will add even more weight alongside the fast-charge electronics.
Shouldn't they be trying to use three phase to help make future cars lighter?
So if Tesla do go with faster charging (which, according to Elon is only really necessary for 1% of trips) then even with three phase the charging cable will be bulkier/heavier than the present design.
They will have to design some sort of on-board, powered reel to store, dispense and retract the heavier charging cable - which will add even more weight alongside the fast-charge electronics.
Shouldn't they be trying to use three phase to help make future cars lighter?