These requirements cover power supplies that are intended for fixed installation on board an electric vehicle for powering systems installed on board the vehicle. Power supplies that are covered by these requirements are rated up to 250 V ac@ 50/60 Hz. Power supplies covered by these requirements are not intended to have their outputs supplied directly to on-board battery packs. Devices for this purpose are considered on-board chargers and are covered by the Standard for Electric Vehicle (EV) Charging System Equipment@ UL 2202. This outline does not cover power supplies for general use or power supplies intended to be used within the passenger compartment of the vehicle.