NICET Electrical Systems for Fire Protection 2

Question 1

Which grounding requirement applies to fire alarm control equipment per NFPA 72?

Accepted Answer

Equipment must be grounded in accordance with NFPA 70 (NEC)

Answer

Grounding is optional for battery-powered systems

Answer

A dedicated grounding electrode is always required

Answer

Equipment must be double insulated instead of grounded

Question 2

What is the minimum standby battery capacity required for a fire alarm system per NFPA 72?

Accepted Answer

24 hours standby plus 5 minutes alarm

Answer

4 hours standby plus 5 minutes alarm

Answer

12 hours standby plus 5 minutes alarm

Answer

48 hours standby plus 5 minutes alarm

Question 3

A supervised circuit in a fire alarm system detects which condition?

Accepted Answer

Open circuits, short circuits, and ground faults

Answer

Alarm conditions only

Answer

Voltage fluctuations above 10%

Answer

Equipment temperature variations

Question 4

What is the maximum resistance allowed on a single initiating device circuit for most fire alarm systems?

Accepted Answer

50 ohms

Answer

10 ohms

Answer

25 ohms

Answer

100 ohms

Question 5

Under NEC Article 760, which installation method is NOT permitted for PLFA cables in ducts used for environmental air?

Accepted Answer

FPL cable exposed in plenum space

Answer

FPL cable in metal conduit

Answer

FPLP plenum-rated cable

Answer

Wireways with FPL cable

Question 6

What device protects a fire alarm control panel from voltage surges on incoming power lines?

Accepted Answer

Transient voltage surge suppressor (TVSS)

Answer

End-of-line resistor

Answer

Isolation transformer

Answer

Ground fault circuit interrupter