Electrical101 Background

Mobile Site        Sitemap        Copyright © 2017 Electrical101.com        All Rights Reserved         Terms of Use

Sitemap Electrical101

Switches | Outlets & Plugs | Ballasts | Replace Ballasts | Troubleshooting | Light Bulbs | Basic Electricity | Save Energy | Misc

Question or Comment?

After 3 Lamp Ballast is Replaced Option 1

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 parallel 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.

How to Remove Wires from Fluorescent Lampholders

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 the dominant hand until the wire comes out.

Remove Wires from Fluorescent Lampholders Video











See page 2 for wiring options 2 and 3

3 Lamp Series-Parallel Ballast

Factory wiring

How to Replace 3 Lamp Series-Parallel Ballast with Parallel

A 3 lamp series-parallel ballast can not be replaced with a parallel 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.

There are three options for replacing a 3 lamp series-parallel ballast with parallel. The first is shown below in option 1. Option 2 and 3 are shown on page 2 of this article.

3 Lamp Series-Parallel Ballast

Replace

Ballasts

Replace 1

Lamp Series Ballast with 2 lamp Parallel

Replace 1 Lamp Series Ballast with 2 Lamp Series

Replace 2

Lamp Parallel Ballast

Replace 2

Lamp Series Ballast with Parallel

Replace 2

Lamp Series Ballast with Parallel 2

Replace 2

Lamp Series Ballast with Series

Replace 3

Lamp Parallel Ballast

Replace 3 Lamp Two Parallel Ballasts with Parallel

Replace 3

Lamp Series Ballast with Parallel

Replace 3 Lamp Two Series Ballasts with Parallel

Replace 3

Lamp Series-Parallel

Ballast with Parallel

Replace 3

Lamp Series-Parallel

Ballast with Parallel 2

Replace 3

Lamp Series-Parallel

Ballast with Series

Replace 4

Lamp Parallel Ballast

Replace 4 Lamp Two Series Ballasts with Parallel

Replace 4

Lamp Series Ballast with Parallel

Direct-Wire Dual-Ended

LED Tube

Lights

Direct-Wire Single-Ended LED Tube

Lights