When electrical power is to operate the fire extinguishing system, it shall be provided with

When electrical power is to operate the fire extinguishing system, it shall be provided with

• A. A backup generator only
• B. No special provisions
• C. A reserved power supply and monitored supervisory alarm
• D. A manual switch only

Answer: (C)

The important idea is that a fire extinguishing system must stay powered automatically even if the building loses normal electrical power, and there must be a way to know that power is available and functioning. Providing a reserved power supply ensures the system can energize and discharge and keep its alarms without relying on the main power grid. Including a monitored supervisory alarm means any fault or loss of power is detected and flagged to the control system or building personnel so action can be taken quickly. This combination gives both backup capability and active visibility, which is essential for a safety-critical automatic system. Relying on a backup generator alone can leave gaps if the generator doesn’t start immediately or if transfer equipment or fuel runs out, and having no special provisions or just a manual switch would mean the system might not operate automatically when needed.

The important idea is that a fire extinguishing system must stay powered automatically even if the building loses normal electrical power, and there must be a way to know that power is available and functioning. Providing a reserved power supply ensures the system can energize and discharge and keep its alarms without relying on the main power grid. Including a monitored supervisory alarm means any fault or loss of power is detected and flagged to the control system or building personnel so action can be taken quickly. This combination gives both backup capability and active visibility, which is essential for a safety-critical automatic system. Relying on a backup generator alone can leave gaps if the generator doesn’t start immediately or if transfer equipment or fuel runs out, and having no special provisions or just a manual switch would mean the system might not operate automatically when needed.