Venture HSP252222BD Parmar Ballast is a 60hz ballast suitable for use with High Pressure Sodium, Metal Halide & Ceramic Metal Halide lamps. This ballast runs 1 x 250w lamp. This ballast has a metal base & enclosure, 2.5mm terminal block, microprocessor controlled, remotely rund up to 25m, accepts 0.75mm to 2.mm solid stranded cable.