Study Questions for TFM 12 Exam UPDATED ACTUAL
QUESTIONS AND CORRECT ANSWERS
Primary purpose of a fire alarm To detect and warn about fire, allowing for
system evacuation and fire suppression.
Power Limited Fire Alarm (P.L.F.A.) A fire alarm system where the power delivered to
the system is limited to prevent risk of fire.
Non-Power Limited Fire Alarm A fire alarm system where the power delivered is
(N.P.L.F.A.) not limited, potentially posing a fire risk.
, Difference between P.L.F.A. and P.L.F.A. limits power to prevent fire risk, while
N.P.L.F.A. systems N.P.L.F.A. does not limit power, potentially posing a
fire risk.
Type of conductors for N.P.L.F.A. Conductors with higher fire resistance to prevent
circuits fire hazards.
A.W.G. American Wire Gauge, important in fire alarm
systems for specifying wire sizes.
Purpose of over-current protection To prevent excessive current that can lead to
in fire alarm systems overheating and fire hazards.
How cables should be fastened Cables should be fastened to structural
within 7 feet of the floor components to prevent damage.
Condition for conductors of 28 Permitted when used for power-limited fire alarm
A.W.G. circuits.
Installation of P.F.L.A. conductors Should not be installed in a raceway with
conductors of electric light, power, or Class 1
circuits.
Plenum cable Cable with fire-resistant insulation used in plenum
spaces for improved fire safety.
Riser cable Cable designed for vertical runs between floors in
a building.
QUESTIONS AND CORRECT ANSWERS
Primary purpose of a fire alarm To detect and warn about fire, allowing for
system evacuation and fire suppression.
Power Limited Fire Alarm (P.L.F.A.) A fire alarm system where the power delivered to
the system is limited to prevent risk of fire.
Non-Power Limited Fire Alarm A fire alarm system where the power delivered is
(N.P.L.F.A.) not limited, potentially posing a fire risk.
, Difference between P.L.F.A. and P.L.F.A. limits power to prevent fire risk, while
N.P.L.F.A. systems N.P.L.F.A. does not limit power, potentially posing a
fire risk.
Type of conductors for N.P.L.F.A. Conductors with higher fire resistance to prevent
circuits fire hazards.
A.W.G. American Wire Gauge, important in fire alarm
systems for specifying wire sizes.
Purpose of over-current protection To prevent excessive current that can lead to
in fire alarm systems overheating and fire hazards.
How cables should be fastened Cables should be fastened to structural
within 7 feet of the floor components to prevent damage.
Condition for conductors of 28 Permitted when used for power-limited fire alarm
A.W.G. circuits.
Installation of P.F.L.A. conductors Should not be installed in a raceway with
conductors of electric light, power, or Class 1
circuits.
Plenum cable Cable with fire-resistant insulation used in plenum
spaces for improved fire safety.
Riser cable Cable designed for vertical runs between floors in
a building.
