Search

Copyright 2017 Electrical101.com All Rights Reserved.

Sitemap

Sitemap

Terms of Use

Electrical101

How to Replace 4 Lamp Two Series Ballasts with Parallel

Question or Comment?

4 Lamp Two Series Ballasts

Factory wiring

Two 2 Lamp Series Lampholder Ballast Wiring Diagram

Light Fixtures with Two Ballasts

A 4 lamp fixture with two series ballasts can be replaced with a 4 lamp parallel ballast. As seen below, connecting the 4 lamp parallel ballast to the four lamps can be a bit confusing. This is because the wire colors on the ballast and the lampholders do not match up on two of the connections.

  1. On the 4 lamp parallel ballast diagram below, each individual wire is connected to a pair of individual wires on the lampholders. Two individual wires of the same color (blue or red) connect to each of the individual pairs on lamps 1 and 4. The other two individual wires of the same color (blue or red) connect to each of the individual pairs on lamps 2 and 3.
  2. One of the yellow common wires connect to the common wires of lamps 1 and 4. The other yellow common wire connects to the common wires of lamps 2 and 3.

After 4 Lamp Two Series Ballasts is Replaced

4 Lamp Series to 4 Lamp Parallel Ballast Lampholder Wiring Diagram