My supply to the house is 60amp. Charging points need to be 100amp.
No they don't. A Fast Charge 7.5kw unit will draw 32A and charge an EV like the i3 from flat in less than 5 hours. Since most people only do 30 or so miles a day, In nearly all circumstances the car will just need an hour or so to top it up ready for the next day.
To get a 22kw/100A charger you need a 3-phase supply, but that's completely unnecessary for a home charge setup.
