NFPA 72 Practice Exam 2026 – Your All-in-One Guide to Mastering the National Fire Alarm and Signaling Code!

The installation wiring between the control unit and any relay or appliance must be monitored for integrity in a fire alarm system because this wiring forms part of the critical communication path within the system. Ensuring the integrity of this wiring is essential for the proper operation of relays and other appliances that execute the alarm functions, such as initiating alerts or notifications in the event of a fire. Monitoring this connection helps to identify issues such as open circuits, short circuits, or ground faults, which could impair the system's performance and response time in emergencies.

Maintaining the integrity of these connections ensures that signals transmitted by the control unit are reliably received by relays and appliances, allowing for effective and timely actions in response to fire conditions. Regular integrity checks are a standard practice in maintaining the overall reliability and compliance of the system as outlined in NFPA 72.