A possible example uses an IEC 60309 connector on the supply end, which is rated at 32 A.
The EVSE, situated in-cable, interacts with the EV to indicate that 32 A can be drawn.
IEC 62196 Plugs, socket-outlets, vehicle couplers and vehicle inlets – Conductive charging of electric vehicles is an international standard for a set of electrical connectors for electric vehicles and is maintained by the International Electrotechnical Commission (IEC).
The standard is based on IEC 61851 Electric vehicle conductive charging system which establishes general characteristics, including charging modes and connection configurations, and requirements for specific implementations (including safety requirements) of both electric vehicle (EV) and electric vehicle supply equipment (EVSE) in a charging system.
One problem is that the required earthing is not present in all domestic installations. This is a direct, semi-active connection of the EV to the AC mains, either 250 V 1-phase or 400 V 3-phase including earth at a maximum current of 32 A.
In European markets Tesla uses a Type 2 connector for Supercharging, re-purposing the pins intended for 3-phase AC power to be used for DC.
Both of the two connectors use a CAN based protocol between the car and the charging station to switch the mode.
In contrast to that both the American SAE and the European ACEA research concentrates on the Green PHY PLC protocol to plug the car into a smart grid architecture.
The signaling from SAE J1772 is incorporated in the standard for control purposes.
All connectors can be converted with passive or simple adapters, although possibly not with all charging modes intact.