Are all ballast the same?
Subsequently, one may also ask, what are the different types of ballasts?
There are several different kinds of ballasts, but the three basic types are electronic ballasts, magnetic ballasts and digital.
Also to know is, what is the difference between t8 and t12 ballast?
Fluorescent lights are tube shaped lamps with a chemical phosphor coating on the inside of the tube. The have small pins on each end that fit into the ballasts located in light fixtures. T12 lamps have a diameter of 1 ½ inches (or 12/8th of an inch.) T8 lamps are fluorescent lights one inch (or 8/8ths) in diameter.
Start by flipping off the circuit breaker or unplugging the light. Remove the bulbs and open up the fixture as shown in Photo 1. There will be four to eight wires coming out of the ballast. Photos 2 and 3 show how to remove the old ballast from the fluorescent light fixture.