This document applies to a new type of AC EV supply equipment for charging electric road vehicles, with a rated supply voltage up to 1 000 V AC and a rated output voltage up to 1 000 V AC.This document provides specific requirements for AC charging system using type 4 vehicle coupler.Type 4 vehicle coupler is under consideration by SC23H.Vehicle inlet and vehicle connector of type 4 are intended to be used for charging in modes 2 and 3, case C.