Most jurisdictions require two types of inspections for exit and emergency lighting. The first is a monthly visual inspection, including a push-button test to confirm that the lights are operational and correctly positioned, as well as to ensure that the battery will engage when the lights lose power.

The second is an annual inspection, often referred to as a “90-minute test” or “load test,” depending on the region. This inspection verifies whether the backup battery can sustain lighting for the required duration-usually 90 minutes-during an outage or emergency. Both inspections are mandated by NFPA 101, though it’s always wise to consult your local Authority Having Jurisdiction (AHJ) for acceptable testing methods.