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How to Direct-Wire Single-Ended LED Tube Lights

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For single-ended direct-wired LEDs, line and neutral are connected to the lampholders at one end of the fixture. If shunted lampholders are used in the fixture, they must be replaced with non-shunted at one end of the fixture. Connecting line and neutral to a shunted lampholder will cause a short circuit (line and neutral are shorted together). Tubes of this type can not be reversed in a fixture. A fixture modification label (should be supplied with the tube) is affixed to the fixture showing which end has power.

4 Lamp Parallel Ballast

Factory wiring

LED Single-ended  Wiring Diagrams

4 Lamp Led Single-Ended Ballast Lampholder Wiring Diagram

Using existing light fixture wiring

Lampholders on left side were replaced with non-shunted lampholders. Lampholders on the right have the original shunted lampholders.

4 Lamp Led Single-Ended Ballast Lampholder Wiring Diagram 2

Using new 18 AWG light fixture wiring and non-shunted lampholders

Replace 4 Lamp Parallel Ballast Wiring Diagram