The Best 4 Ballast Light Fixtures Ideas. If you have 2 ballasts in your fixtures, this is the video to watch. Web robertson 3p20135, iea432t8120n /b fluorescent eballast for 4 f32t8 linear lamps, instant start, 120vac, 60hz, normal ballast factor, npf (replaces robertson model.

Cap the wires with wire nuts. If the ballast in the. Web go to step 1.