How often must fire alarms be tested in commercial buildings according to NEC?

Testing fire alarms in commercial buildings is essential for ensuring the safety of occupants and compliance with regulations. According to the National Electrical Code (NEC), fire alarm systems must be tested monthly to verify their proper operation. This monthly testing ensures that all components of the fire alarm system, including detectors, alarms, and communication devices, function correctly and reliably in case of an emergency. Regular testing helps identify any potential issues that may arise, allowing for timely maintenance and repairs to keep the system in optimal working condition.

While other intervals such as weekly, quarterly, or annually might be relevant for different maintenance tasks or systems, the NEC specifically emphasizes the importance of monthly testing for fire alarms to maintain a consistent safety standard in commercial settings. This frequency of testing is key to ensuring that any faults or deficiencies can be addressed promptly, safeguarding the lives of those who occupy the building.