1
TFM 12 FIRE ALARM TECHNICAL EXAM
QUESTIONS & CORRECT ANSWERS
Does a fire hood system and a kitchen need to be monitored by the fire alarm
system? - correct-answer -Yes
What does P.L.F.A stand for? - correct-answer -Power Limited Fire Alarm
What does N.P.L.F.A stand for? - correct-answer -Non-Power Limited Fire Alarm
What is the difference between P.F.L.A and N.P.F.L.A? - correct-answer -an N.P.L.F.A
can operate at up to 600v, and the power output isn't limited
a P.L.F.A has the voltage and power limited by a listed power source.
What material must N.P.F.L.A circuit conductors be made from? - correct-answer -
ONLY solid stranded copper is permitted.
, 2
What does A.W.G stand for? - correct-answer -American Wire Gauge
What size conductors are permitted? - correct-answer -Size 18 A.W.G and 16
A.W.G are permitted, provided they do not exceed certain capacities.
What is used to protect transformers or other devices supplied from power-supply
conductors? - correct-answer -An over-current device not rated over 20 amperes.
When located within 7 feet of the floor, how shall cables be fastened? - correct-
answer -Cables shall be fastened in an approved manner at intervals of not more
than 18 inches.
What code shall all wiring, cable and equipment be in accordance with? - correct-
answer -NFPA 70, National Electric Code, Specifically articles 760, 770, and 800.
All systems shall test free of _______, except for application in which _______ are
approved. - correct-answer -grounds, grounds
, 3
So long as a single open, ground, or short circuit conditioned do not affect the
operation equipment, what is not needed? - correct-answer -Monitoring for
integrity, such conditions must not prevent alarm, trouble or supervisory signals
being sent.
If speakers are used to generate audible fire signals, What rule must apply? -
correct-answer -The speaker must be monitored for integrity, and failure should
result in a trouble signal.
Where must a spot type heat and smoke sensors be located on walls and ceilings?
- correct-answer -On the ceiling- not less than 4 inches from the sidewall.
On the wall- between 4 inches and 12 inches from the ceiling.
When more than one detector is used on a ceiling, what spacing measurement
shall be used? - correct-answer -All points shall have a detector equal to 0.7 times
the listed spacing.
When water flow occurs that is equal or greater than the flow of a single sprinkler,
how quickly shall the alarm signal initiate? - correct-answer -Within 90 seconds
TFM 12 FIRE ALARM TECHNICAL EXAM
QUESTIONS & CORRECT ANSWERS
Does a fire hood system and a kitchen need to be monitored by the fire alarm
system? - correct-answer -Yes
What does P.L.F.A stand for? - correct-answer -Power Limited Fire Alarm
What does N.P.L.F.A stand for? - correct-answer -Non-Power Limited Fire Alarm
What is the difference between P.F.L.A and N.P.F.L.A? - correct-answer -an N.P.L.F.A
can operate at up to 600v, and the power output isn't limited
a P.L.F.A has the voltage and power limited by a listed power source.
What material must N.P.F.L.A circuit conductors be made from? - correct-answer -
ONLY solid stranded copper is permitted.
, 2
What does A.W.G stand for? - correct-answer -American Wire Gauge
What size conductors are permitted? - correct-answer -Size 18 A.W.G and 16
A.W.G are permitted, provided they do not exceed certain capacities.
What is used to protect transformers or other devices supplied from power-supply
conductors? - correct-answer -An over-current device not rated over 20 amperes.
When located within 7 feet of the floor, how shall cables be fastened? - correct-
answer -Cables shall be fastened in an approved manner at intervals of not more
than 18 inches.
What code shall all wiring, cable and equipment be in accordance with? - correct-
answer -NFPA 70, National Electric Code, Specifically articles 760, 770, and 800.
All systems shall test free of _______, except for application in which _______ are
approved. - correct-answer -grounds, grounds
, 3
So long as a single open, ground, or short circuit conditioned do not affect the
operation equipment, what is not needed? - correct-answer -Monitoring for
integrity, such conditions must not prevent alarm, trouble or supervisory signals
being sent.
If speakers are used to generate audible fire signals, What rule must apply? -
correct-answer -The speaker must be monitored for integrity, and failure should
result in a trouble signal.
Where must a spot type heat and smoke sensors be located on walls and ceilings?
- correct-answer -On the ceiling- not less than 4 inches from the sidewall.
On the wall- between 4 inches and 12 inches from the ceiling.
When more than one detector is used on a ceiling, what spacing measurement
shall be used? - correct-answer -All points shall have a detector equal to 0.7 times
the listed spacing.
When water flow occurs that is equal or greater than the flow of a single sprinkler,
how quickly shall the alarm signal initiate? - correct-answer -Within 90 seconds
