S95 - Supervision of Fire Alarm System System Components and Power Questions and Answers

Question 1

According to NFPA 72, what is the minimum required capacity for the secondary power supply (batteries) for a standard, non-voice fire alarm system?

Accepted Answer

24 hours of operation in standby, followed by 5 minutes in alarm.

Answer

12 hours of operation in standby, followed by 5 minutes in alarm.

Answer

24 hours of operation in standby, followed by 15 minutes in alarm.

Answer

48 hours of operation in standby, followed by 5 minutes in alarm.

Question 2

Which of the following best describes the primary power source for a Fire Alarm Control Panel (FACP)?

Accepted Answer

A dedicated branch circuit with a marked and locked circuit breaker.

Answer

A shared circuit with emergency lighting to ensure it is always prioritized.

Answer

Any 120V outlet within 6 feet of the panel.

Answer

A Ground-Fault Circuit Interrupter (GFCI) protected outlet.

Question 3

In an addressable fire alarm system, what is the function of a Signaling Line Circuit (SLC)?

Accepted Answer

It allows for two-way communication between the control panel and individually identified devices.

Answer

It exclusively powers notification appliances like horns and strobes.

Answer

It creates a simple zoned circuit where the panel only knows the general area of an alarm.

Answer

It provides the 24V DC backup power from the batteries to the main panel.

Question 4

An S-95 holder is working in a large building where the main FACP is in the basement. A separate panel in the lobby displays the system status and indicates the floor of any alarm. What is this lobby panel called?

Accepted Answer

A Remote Annunciator.

Answer

A NAC Power Expander.

Answer

A Main Terminal Cabinet.

Answer

A Zone Disconnect Switch.

Question 5

Which wiring configuration provides redundancy by creating a complete loop from the control panel, through all devices, and back to the panel, allowing it to function despite a single break in the line?

Accepted Answer

Class A.

Answer

Class B.

Answer

Class X.

Answer

Class C.

Question 6

A fire alarm system design for a large school requires more horns and strobes than the main FACP can power. Which component would be installed to provide additional, synchronized power for these notification appliances?

Accepted Answer

A NAC power supply / booster panel.

Answer

A larger set of backup batteries.

Answer

An addressable control module.

Answer

An uninterruptible power supply (UPS).