A 277 volt ballast that can operate a 1000 watt HPS, MH or DE lamp at 50%, 75%, 100% or 110% settings. It comes pre-wired with a Sun System lamp cord receptacle. It includes a 6 ft 277 volt power cord with L7-15P twist lock plug. It is compliant with FCC Article 18 Part A as tested by an independent US testing lab in a true as used configuration. It operates at 72 kHz.
