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FDNY COF For Fire Alarm Systems Inspection, Testing And Service Technician (S-98) Practice Exam

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Secondary power supplies are required to have sufficient power to operate the fire alarm system in a non alarm condition for how many hours and then be capable of operating all notification devices for a minimum of how many minutes?
Correct Answer:
24 hours and 5 minutes
Explanation:
Backup power duration and signaling requirements ensure the fire alarm system stays functional during a power outage. The secondary power supply must be sized to keep the system operating in non-alarm condition for 24 hours, so the control panel, detectors, and other non-alarm functions remain active even if utility power is out. After that standby period, it must be capable of operating all notification devices for at least 5 minutes, providing continuous audible and visual alerts to warn occupants and support evacuation until power is restored or the incident is resolved. This combination ensures reliable monitoring and effective warning during extended outages, aligning with standard fire alarm code expectations.

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