1000W Switchable Ballast . E Z Switchable Ballast Kit is a magnetic ballast that can be switched between 120v and 240v without any additional wiring. Simply flip the protective plate to choose your voltage. This ballast can also be used with both Metal Halide (MH) and High Pressure Sodium HPS) lamps with a simple flip of a switch. The Light EnerG(TM) E Z Switchable Ballast Kit features excellent heat durability, galvanized steel construction and a top of the line Aerovox capacitor. It includes a 15’ lamp wire and a 6’ power cord. The lamp cord receptacle accepts all LightEnerG lamp cords and reflectors.