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

NFPA 72 requires fire alarm control equipment to be grounded in accordance with NFPA 70 (the National Electrical Code).

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

NFPA 72 requires fire alarm systems to have batteries capable of operating the system in standby mode for 24 hours followed by 5 minutes of full alarm.

Question 3

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

Accepted Answer

Open circuits, short circuits, and ground faults

Answer

Supervised circuits continuously monitor for open circuits, short circuits, and ground faults, generating a trouble signal if any fault is detected.

Question 4

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

Accepted Answer

50 ohms

Answer

Most fire alarm control panels specify a maximum loop resistance (commonly 50 ohms) for initiating device circuits to ensure reliable signal transmission.

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 (standard) cables cannot be run exposed in plenums; only FPLP (plenum-rated) cables or cables in metal conduit are permitted in plenum spaces.

NICET - National Institute for Certification in Engineering Technologies Practice Test

NICET - National Institute for Certification in Engineering Technologies Practice Test

NICET Electrical Systems for Fire Protection 2