Sunleaves HPS 1000 watt Ballast. The Sunleaves HPS 1000-Watt Ballast boasts a common outlet for compatibility with most manufacturers cordsets. It also features an aluminum-wired transformer, has dual 120/240-volt capabilities and comes with a 120-volt power cord. Operators simply unscrew the voltage-protection plate, twist and retighten for 240-volt functioning - a specialized 240-volt power cord (necessary for 240-volt operation) is available separately to complete the transition. Sunleaves HPS Ballasts are covered by a five-year manufacturer warranty.