Where should the branch-circuit overcurrent protective device be permanently identified?

Where should the branch-circuit overcurrent protective device be permanently identified?

• A. Fire Alarm Control Unit
• B. Main Electrical Service Panel
• C. In the main equipment room
• D. On the exterior of the building

Answer: (A)

The branch-circuit overcurrent protective device should be permanently identified at the Fire Alarm Control Unit. This is because the FACU is the centralized point where fire alarm circuits are organized, monitored, and labeled for maintenance and troubleshooting. By placing the identification with the circuit’s protective device inside or on the FACU, technicians can quickly map each protected branch to its corresponding circuit and sensors or devices, which helps ensure safe servicing and compliance with fire‑alarm labeling practices. Labeling it at the main electrical service panel, in the main equipment room, or on the exterior of the building can make the information harder to locate when working specifically with the fire alarm circuits or when the panel configurations change. Those locations are less directly tied to the fire‑alarm circuits and can lead to confusion during testing or repairs.

The branch-circuit overcurrent protective device should be permanently identified at the Fire Alarm Control Unit. This is because the FACU is the centralized point where fire alarm circuits are organized, monitored, and labeled for maintenance and troubleshooting. By placing the identification with the circuit’s protective device inside or on the FACU, technicians can quickly map each protected branch to its corresponding circuit and sensors or devices, which helps ensure safe servicing and compliance with fire‑alarm labeling practices.

Labeling it at the main electrical service panel, in the main equipment room, or on the exterior of the building can make the information harder to locate when working specifically with the fire alarm circuits or when the panel configurations change. Those locations are less directly tied to the fire‑alarm circuits and can lead to confusion during testing or repairs.