Electrical101 Background Sitemap

Switches | Outlets & Plugs | Ballasts | Replace Ballasts | LED Tube Lights | Troubleshooting | Basic Electricity  | Misc Articles

Bolt Bolt

    Electrical 101   

Question or Comment?

3 Lamp Parallel Ballast Lampholder Wiring Diagram

Instant Start Ballast Tombstone Lampholders Wiring

Instant Start Ballast Tombstone Wiring Diagrams

Instant Start Ballast Tombstone Wiring Diagram 3 Lamps

Light Fixtures with Two Ballasts

Fluorescent tube light fixtures with two ballasts are typically wired in the same manner. Individual wires of one ballast connect to the one side of the fixture, individual wires from the other ballast connect to the other side of the fixture. The common wires of each ballast are connected to the other side of the fixture from each of the individual wires.

As seen below on ballast 1, the individual wire is connected to the tombstone of lamp 2 on the left side, and the common wire on the right side.

On ballast 2, the individual wires are connected to the tombstones of lamps 1 and 3 on the right side, and the common wires to lamps 1 and 3 on the left.

3 Lamp Instant Start Two Ballasts Tombstone Wiring Diagram

3 Lamp Parallel Two Ballasts Lampholder Wiring Diagram

Using one 1 lamp and one 2 lamp instant start ballast.

The 1 lamp ballast usually connects to the middle lamp, the 2 lamp ballast usually connects to the outer two lamps.


4 Lamp Instant Start Ballast Tombstone Wiring Diagram

Replace 4 Lamp Parallel Ballast Wiring Diagram


2 Lamp Parallel Ballast Lampholder 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

About      Privacy Policy      Sitemap      Copyright © 2024 Electrical101.com      Terms of Use

Find Instant Start Ballasts

Find Tombstone Lampholders