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Rapid Start Ballast Tombstone Wiring Diagram
Light Fixtures with Two Ballasts
Fluorescent tube light fixtures with two ballasts are typically wired in the same manner. Individual wires of one ballast connect to the one side of the fixture, individual wires from the other ballast connect to the other side of the fixture. The common wires of each ballast are connected to the other side of the fixture from each of the individual wires.
As seen below on ballast 1, individual wires are connected to the tombstones of lamps 1 and 4 on the left side, and the common wires on the right.
On ballast 2, common wires are connected to the tombstones of lamps 2 and 3 on the left side, and the individual wires on the right.
4 Lamp Rapid Start Two Ballasts tombstone Wiring Diagram
Using two 2 lamp rapid start ballasts.
One 2 lamp ballast usually connects to the two middle lamps, the other 2 lamp ballast usually connects to the outer two lamps. If one of the inner lamps fails, the other middle lamp will not light up. If one of the outer lamps fails, the other outer lamp will not light up.
4 Lamp Rapid Start tombstone Ballast tombstone Wiring Diagram
Rapid Start Wiring 1 to 3 Lamps
Instant Start Tombstone Wiring
Rapid Start Tombstone Wiring 2 and 4 Lamps
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