C7 Fire Alarm System Installation 3

Question 1

What is the purpose of a Class A wiring configuration in a fire alarm system compared to Class B?

Accepted Answer

Class A allows the system to continue operating past a single open fault

Answer

Class A (Style D/E) wiring loops back to the panel, allowing the system to continue operating past a single open-circuit fault by providing an alternate signal path.

Question 2

When installing horn/strobe notification appliances in a corridor under ADA and NFPA 72, the strobe must be mounted with its lens center at what height?

Accepted Answer

80 inches AFF or 6 inches below the ceiling, whichever is lower

Answer

NFPA 72 requires visible notification appliances to be mounted with the lens center between 80 inches AFF and 6 inches below the ceiling, whichever is lower.

Question 3

A fire alarm control panel (FACP) loses AC primary power. How long must the system's standby batteries be capable of powering the system under NFPA 72?

Accepted Answer

24 hours followed by 5 minutes of alarm

Answer

NFPA 72 requires fire alarm systems to have sufficient battery standby capacity for 24 hours in standby followed by 5 minutes in full alarm.

Question 4

Which type of fire detector is best suited for detecting slow, smoldering fires that produce large quantities of visible smoke particles?

Accepted Answer

Photoelectric smoke detector

Answer

Photoelectric smoke detectors respond more quickly to large, visible smoke particles produced by slow, smoldering fires than ionization detectors.

Question 5

What California state license classification allows a contractor to legally install fire alarm systems as the primary scope of work?

Accepted Answer

C-7 Low Voltage Systems

Answer

The California C-7 Low Voltage Systems Contractor license authorizes installation of fire alarm and signaling systems as a primary scope under low voltage work.

(C7) California C7 Low Voltage Systems Contractor Certification Practice Test

(C7) California C7 Low Voltage Systems Contractor Certification Practice Test

C7 Fire Alarm System Installation 3