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Dimming ballasts are available for fluorescent tubes and CFLs that use an external ballast. These ballasts are usually rapid start or programmed start, and have a good dimming range. Find Dimming Ballasts

Dimming fluorescent lights are usually found in commercial and institutional environments and not common in the household.

Since dimmable fluorescent tubes are wired in series, they use non-shunted lampholders. See Rapid Start Ballast Lampholder Wiring page for more information.

2 Lamp Dimming Ballast Wiring Diagram

Dimming Ballast Wiring

Dimming Ballast Wiring Diagrams

2 Lamp Dimming Ballast Wiring Diagram

Using Advance Mark 7 or Mark 10 dimming ballast and dimmer switch

2 lamp series ballast wiring.

3 Lamp Dimming Ballast Wiring Diagram

Using Advance Mark 7 or Mark 10 dimming ballast and dimmer switch

3 lamp series-parallel ballast wiring.

3 Lamp Dimming Ballast Wiring Diagram Ballasts Background

Fluorescent Ballasts

Ballast Wiring

Instant Start Wiring

Rapid Start Wiring 1 to 3 Lamps

Rapid Start Wiring 4 Lamps

Dimming Ballast Wiring

CFL Ballast Wiring

Emergency Ballasts

Tombstone Lampholders

Fluorescent Tombstone Wiring

Instant Start Tombstone Wiring

Rapid Start Tombstone Wiring 2 and 4 Lamps

Rapid Start Tombstone Wiring 3 Lamps

Swap Terminals on Non-Shunted Tombstones