Fluorescent Ballasts

Fluorescent ballasts come in two main categories, modern electronic ballasts, and the older core and coil ballasts, of which there are three main varieties: Pre-heat, Instant-Start and Rapid-Start.

Some ballasts are oil-filled to help dissipate heat. If replacing such ballasts, care must be taken to ensure that they are disposed of properly. If a ballast is leaking, avoid contact with the oils as they are toxic or carcinogenic.