The basic ballast is the open core and coil which is most often used as a component within a lighting luminaireThe core and coil also forms the nucleus of Philips Advance five other ballast configurations26 Mfd capacitor2.6/1.56/1.31/1.17 A input current (open circuit), 2.97/1.68/1.48/1.3 A input current (starting), 2.4 to 3.6/1.4 to 2.1/1.2 to 1.8/1.05 to 1.55 A input current (short circuit), 3.8/2.2/1.9/1.65 A input current (nominal)4-1/4 x 4-3/4 in (2 coil) core1.75 in Dia x 4.8 in H oval capacitorBallast replacement kit with dry film capacitorUL insulation class H of 180 deg C