74 Quicktronic® PROStart® Electronic fluorescent ballast is suitable to use with two 28-Watt FP28T5 lamps. It has voltage rating of 120 - 277-Volts and current rating of 0.27/0.12-Amp. Programmed rapid start ballast with 1 ballast factor, offers greater than 98% power factor. It features type 1 outdoor enclosure. Ballast accommodates wire of size 18-AWG. It has series lamp connection. Ballast operates at the frequency rating of 50/60-Hz. It provides Class P protection. Ballast measures 14.17-Inch x 1.18-Inch x 0.87-Inch. It features QUICKSENSE® ballast technology. It withstands temperature rating of 70 deg C. Ballast is UL listed, CSA certified and RoHS compliant.