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3 Lamp Programmed Start Ballast Replaced with Instant Start Diagram

3 Lamp Series-Parallel to Parallel Lampholder Wiring Diagram

The lampholders on the left side of lamp 2 and 3 need to be disconnected from each other and rewired as individual wires for the new instant start ballast as shown above. The lampholder on the right side of lamp 3 will be wired from Individual to common and connected to the lamp 1 and 2 right side common wires.

3 Lamp Programmed Start Ballast Replaced with 4 Lamp Instant Start Diagram

3 Lamp Programmed Start Ballast Replaced with 4 Lamp Instant Start Diagram


How to Remove Wires from Fluorescent Tombstones

Pull Wire from Lampholder 1Pull Wire from Lampholder 2

In the left image, the wire is wrapped around the fingers of the dominant hand as shown. In the right image the dominant hand is closed, while grasping the lampholder in the other hand. The wire is gently pulled while twisting both hands until the wire comes out.


How to Remove Wire from a Tombstone or Push-in Connector Video

How to Remove Wire from a Lampholder or Push-in Connector Video

How to Replace 3 Lamp Programmed Start Ballast with Instant Start

A 3 lamp programmed start ballast can not be replaced with an instant start ballast without rewiring at least two lampholders. As you can see in the “factory wiring” diagram below, the left side of lamp 1 and the right side of lamp 3 have individual wires. The right side of lamps 1 and 2, and the left side of lamps 2 and 3 have common wires. This is typical series-parallel wiring.

3 Lamp Programmed Start Ballast Diagram

Factory wiring

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Replace

Ballasts

Replace 1 Lamp Rapid Start with 2 Lamp Instant Start

Replace 1 Lamp Rapid Start with 2 Lamp Rapid Start

Replace 2 Lamp Instant Start

Replace 2 Lamp Rapid Start with Instant Start

Replace Alternate 2 Lamp Rapid Start with Instant Start

Replace 2 Lamp Rapid Start

Replace 3 Lamp Instant Start

Replace 3 Lamp Two Instant Start with One Instant Start

Replace 3 Lamp Rapid Start with Instant Start

Replace 3 Lamp Two Rapid Start with One Instant Start

Replace 3 Lamp Programmed Start with Instant Start

Replace 3 Lamp Programmed Start with Rapid Start

Replace 4 Lamp Instant Start

Replace 4 Lamp Two Rapid Start with One Instant Start

Replace 4 Lamp Rapid Start with Instant Start

3 Lamp Programmed Start Ballast