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Move from the guide into exit signs, emergency lights, combo units and wall packs.
Last updated: June 2026
Emergency lighting ballasts can extend or repair an existing fluorescent emergency setup, but a dedicated LED emergency fixture is often simpler when compatibility is unclear. Use the article below to decide whether the project is a ballast replacement or a fixture replacement.
Compare product paths
Use the collection pages when you are deciding between separate fixtures, combo units, wet-location equipment or outdoor egress lighting.
Start with Emergency Ballasts for known retrofit replacements, or Emergency Lights when a full fixture path is safer.
Emergency ballast or dedicated emergency light?
| Situation | Better starting path | Why |
|---|---|---|
| Existing fluorescent fixture is otherwise correct | Emergency Ballasts | A compatible ballast can restore emergency operation without replacing the full fixture. |
| Lamp type, driver, or wiring is unclear | Dedicated LED Emergency Lights | A full emergency fixture reduces compatibility risk and simplifies maintenance. |
| LED conversion is planned | LED Emergency Lights | Avoid mismatched lamp, driver, ballast, and emergency output combinations. |
| Known ballast SKU is being replaced | Ballasts | Match voltage, lamp type, lumen output, wiring diagram, time delay, and rating. |
Compatibility checks before ordering a ballast
- Confirm lamp type, voltage, and fixture wiring diagram.
- Check emergency lumen output and whether time delay is needed.
- Confirm damp or wet-location needs if the fixture is exposed.
- Verify UL 924 requirements, test switch, charge indicator, and inspection access.
Product paths
Related guide: When upgrading to LEDs, keep the LED safety guide and UL 924 guide with the fixture-selection notes.
Code resources for this topic
Use the fire-code hub when the article raises an AHJ, UL 924, IFC, local approval, or inspection question.