In addition, fluorescents last almost 10 times as long as incandescents, for an added benefit. The fluorescent lamp may disconnect from the ballast for lamp replacement, or the lamp may be permanently affixed to the ballast.
Several types are available.
Compact fluorescent lamps that detach from the ballast reduce labor costs since the ballast does not need to be discarded when the lamp burns out. Direct-wire ballast adapters are also available. When the lamps burn out, the ballast must also be replaced. The following table shows a few incandescent lamps and the suggested fluorescent replacements. Fluorescent wattage includes both lamp and ballast wattage.