How well do you know NFPA 72 requirements for fire alarm power supplies? Take this quiz and test your knowledge.
Created by: Thomas P. Hammerberg
1. All new fire alarm systems are required to use batteries for all or part of secondary power.
A. True
B. False
2. Engine-driven generators used to provide secondary power for a protected premises fire alarm system or an emergency communications system shall comply with NFPA 110 Chapter 4, requirements for a Type ______ system.
A. 10, Class 24, Level 1
B. 10, Class 60, Level 1
C. 60, Class 24, Level 1
D. 60, Class 24, Level 2
3. A Type 10 system requires the system to ______.
A. Transfer to secondary power within 10 minutes
B. Transfer to secondary power within 10 seconds
C. Provide secondary power for 10 hours
D. Provide secondary power for 10 minutes
4. A Class 24 system requires the system to ______.
A. Transfer to secondary power within 24 minutes
B. Transfer to secondary power within 24 seconds
C. Provide secondary power for 24 hours
D. Provide secondary power for 24 minutes
5. Installation of engine-driven generators used to provide secondary power for a protected premises fire alarm system or an emergency communications system shall be in accordance with NFPA 70, Article ______.
A. 700
B. 701
C. 702
D. 703
6. Where survivability of circuits is required by another section of the code, equal protection shall be provided for power supply circuits.
7. The ______% safety margin is intended to address normal aging effects on battery capacity.
A. 10
B. 15
C. 20
D. 25
8. ______ batteries are fully charged and connected across the output of the rectifiers to smooth the output and to serve as a standby source of power in the event of a loss of line power.
A. Float-charged
B. Trickle-charged
9. Battery-charging equipment shall be provided to recharge batteries within ______ hours after fully charged batteries have been subject to a single discharge cycle.
A. 8
B. 12
C. 24
D. 48
10. Where a circuit breaker is the disconnecting means, an approved breaker locking device shall be installed.