HPS Ballast Cross Reference:
Advance 72C7984
Sylvania LU70/120/277/F-CAN (47763)

Universal Ballast, Replacement F-Can HPS Ballast Kit for 70 Watt High Pressure Sodium. This F-Can HID Ballast, Universal part number 12210237CTC, is designed with a Circuit Type HX-HPF, for one 70 watt HPS Lamp, S62 ANSI Ballast Type, 97 Input Watts, 120/277 Input Voltage, 60 Hz.

The maximum distance this F-Can ballast can be mounted from your 50 watt high pressure sodium bulb is 10 feet. It has a sound rating of B and is UL and CSA Certified. For proper installation, insure that remote ballasts are properly vented and mounted to a heat-dissipating surface.