22kW charging can only be supported by households that have a three-phase electrical set up. Most houses in the UK are single-phase and can only support a maximum 7kW charging output due to the UK grid. A 22kW charger is three times faster than a 7kW charger however although the charging speed may be faster, charging speeds are dependent on the car’s onboard charger. Not all electric vehicles are able to charge 7kW+, these EVs can still be plugged into the chargepoint however will only draw the maximum power accepted by the cars onboard charger. For example, if your EVs onboard charger has a 3.6kW onboard charger, it will draw a maximum of 3.6kW from a 7kW power supply or three-phase power supply.