Copyright 2017 Electrical101.com All Rights Reserved.
3 Lamp Series Ballast
3 Lamp Parallel Ballast Wiring Diagram
3 Individual wires, 1 common wire
A 3 lamp series magnetic ballast should be replaced with a 3 or 4 lamp parallel electronic ballast. Each lampholder has four separate connections.
After 3 Lamp Ballast is Replaced
After 3 Lamp Ballast is Replaced with a 4 Lamp Parallel