S95 Fire Alarm System Components 4

Question 1

Per NFPA 72, what is the minimum secondary (battery) power requirement for a fire alarm system in most occupancies?

Accepted Answer

24 hours standby plus 5 minutes of alarm

Answer

NFPA 72 requires most fire alarm systems to operate on secondary power for 24 hours in standby mode followed by 5 minutes of full alarm operation.

Question 2

What is the designated primary power source for a fire alarm control panel (FACP)?

Accepted Answer

Commercial AC utility power

Answer

Commercial AC utility power is the primary source; secondary power (batteries or generator) serves as backup when primary power fails.

Question 3

In an addressable fire alarm system, what is assigned to each individual device on the signaling line circuit?

Accepted Answer

A unique address or identification code

Answer

Each device in an addressable system has a unique address, allowing the FACP to identify the exact location of an alarm or trouble condition.

Question 4

What key advantage does a Class A wiring configuration provide over Class B?

Accepted Answer

Continued circuit operation despite a single open or ground fault

Answer

Class A wiring uses a return path back to the FACP, so if a single wire break occurs, signals can still travel around the fault via the return path.

Question 5

Which of the following best describes the role of the fire alarm control panel (FACP)?

Accepted Answer

It monitors, controls, and coordinates all fire alarm system components

Answer

The FACP is the system's brain, continuously monitoring all circuits, processing signals, and controlling outputs such as notification appliances and auxiliary functions.

(S95) Supervision of Fire Alarm System Practice Test

(S95) Supervision of Fire Alarm System Practice Test

S95 Fire Alarm System Components 4