Emergency lighting testing: the complete guide
Every emergency light and exit sign needs a 30-second test every 30 days and a 90-minute test every year, with written records. Here is how to do it right, and faster.
Why emergency lighting has to be tested
Emergency lights and exit signs sit idle for years, then have one job during a fire or outage: stay lit long enough for everyone to get out. Batteries age, chargers fail and lamps burn out without anyone noticing. Testing is the only way to know a unit will work when the power goes out. That is why the Life Safety Code, NFPA 101, makes periodic testing mandatory, and why inspectors ask for the records.
The testing schedule at a glance
| Test | How often | Duration | What it proves |
|---|---|---|---|
| Functional test | Every 30 days | At least 30 seconds | The unit switches to battery and lights up |
| Full duration test | Once a year | At least 90 minutes (1.5 hours) | The battery can carry the load for the full required time |
| Visual inspection | Monthly | A few seconds per unit | Unit is in place, undamaged and showing no fault |
Written records of every inspection and test must be kept and made available to the Authority Having Jurisdiction (AHJ). Our free inspection checklist and log book covers it.
How to test emergency lights, step by step
- Plan the route. List every unit by location so none are missed. Number them on a floor plan.
- Run the 30-second functional test on each unit using its test switch, or simulate a power failure on the circuit. The unit must switch to battery and light fully.
- Inspect while it runs. Lamps aimed at the egress path, sign legend fully lit, no damage, nothing blocking the light.
- Note failures and repair or replace them promptly, then retest.
- Record everything: date, unit, result, corrective action and the tester's name.
Exit signs follow the same routine. See how to test exit signs for sign-specific checks.
The most common failures
- Weak or dead batteries. The single biggest cause. A unit can pass 30 seconds and still die well before 90 minutes. See emergency light batteries.
- Burned-out or misaimed lamps that leave stairs or doors dark.
- Disconnected batteries after previous service.
- Charger or circuit faults, often shown as a missing or wrong-color charging indicator.
- Missing records, which fail an inspection even when the lights work.
How to make testing faster
Most of the time in a testing round is spent getting to the test switch, holding it and, once a year, coordinating breaker shutdowns for the 90-minute test. Three ways to cut it down:
- One Touch units: a large integrated button runs the 30-second test with one press and the 90-minute test with two. No ladder for most mounting heights, no held switch, no breaker.
- Self-testing units: the fixture runs both tests automatically and shows the result, so the monthly round is a visual check. NFPA 101 allows this with visual inspections and records. Read self-testing emergency lighting.
- Standardize: one fixture type across a building means one test method and one record format.
Frequently asked questions
How often should emergency lighting be tested?
A 30-second functional test every 30 days and a 90-minute full-duration test once a year, with written records, under NFPA 101.
Who can test emergency lights?
Typically trained facility staff or a fire and life safety service company. Your AHJ may set additional qualifications for certain occupancies.
What happens if we skip testing?
Missing tests or records can lead to citations during fire inspections, and untested units are the ones most likely to fail in a real outage.
Does emergency lighting maintenance include battery replacement?
Yes. Maintenance covers testing, cleaning, aiming lamps and replacing batteries and lamps that fail tests or reach end of life.