How long must you wait after turning on the battery master switch before performing the fire test?

• A. 10 seconds
• B. 30 seconds
• C. 60 seconds
• D. 90 seconds

Answer: (B)

After turning on the battery master switch, you wait thirty seconds before performing the fire test to let the fire-detection system power up and complete its initialization. This pause ensures the detectors and control circuitry are stabilized and ready, so the test results reflect normal operation rather than startup transients. If you test too soon, you risk false readings or missing a fault because the system hasn’t finished its self-checks. Waiting longer than needed isn’t harmful but wastes time, while waiting shorter than needed can yield unreliable results.