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Parallel Ballast Socket

Fluorescent Lampholder Wiring

2 Lamp Parallel Ballast Wiring Diagram using Non-Shunted Lampholders

2 Lamp Parallel Ballast Wiring Diagram using Non-Shunted Lampholders


2 Lamp Series Ballast Wiring Diagram using Non-Shunted Lampholders

2 Lamp Series Ballast Lampholder Wiring Diagram


How to Remove a Wire from a Push-in Connector

Grasp the wire and twist it (rotate) while gently pulling on the wire until it comes out. If not done properly, the wire could break off before it becomes unseated from the connector.


Fluorescent lampholders hold fluorescent tubes in place on a light fixture. Wires from the ballast plug into push-in connectors in the lampholders that connect to the pins of the lamp.

Shunted Lampholders

Shunted lampholders for instant start parallel ballasts hold up to two 18 AWG wires, are connected together internally, and connect to both sides of the lampholder socket.

In the diagram below (2 lamp parallel ballast), the individual blue wires connect from the ballast to each of the lampholders on one side of each lamp.

The common red wire connects from the ballast to both of the lampholders on the other side of each lamp. An additional red wire connects the two common side lampholders together.

Push-in connectors

2 Lamp Parallel Ballast Wiring Diagram using Shunted Lampholders

Non-Shunted Lampholders

Non-shunted lampholders for rapid start series ballasts each hold four 18 AWG wires. The two push-in connectors on the left side are connected together and to the left side of the holder internally. The two push-in connectors on the right side are connected together and to the right side of the holder internally.

In the diagram below, the individual blue wires connect from the ballast to push-in connectors on each side of the left holder of lamp 1. The other individual red wires connect from the ballast to push-in connectors on each side of the left holder of lamp 2.

The common yellow wires connect from the ballast to push-in connectors on one of the right holders of lamp 1 or 2. Two yellow wires connect the common lampholders together.

Series Ballast Socket
2 Lamp Parallel Ballast Lampholder Wiring Diagram

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Fluorescent Ballasts

Ballast Wiring

Parallel Ballast Wiring

Series Ballast Wiring 1 to 3 Lamps

Series Ballast Wiring 4 Lamps

Dimming Ballast Wiring

CFL Ballast Wiring

Fluorescent Lampholders

Fluorescent Lampholder Wiring

Parallel Ballast Lampholder Wiring

Series Ballast Lampholder Wiring 2 and 4 Lamps

Series Ballast Lampholder Wiring 3 Lamps

Swap Terminals on Non-Shunted Lampholders