TFM 12 FIRE ALARM TECHNICAL EXAM
QUESTIONS WITH ANSWERS | GRADED A+ .
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.
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.
Single conductors shall not be smaller than ___ A.W.G? - Correct Answer -18
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, Conductors of 28 A.W.G shall only be permitted in which circumstance? - Correct Answer -
Spliced with a connector listed as suitable for 26 to 24 A.W.G
How shall P.F.L.A conductors NOT be installed? - Correct Answer -P.F.L.A conductors shall
not be strapped, taped, or attached to the exterior of any conduit or raceway.
What is Plenum cable? - Correct Answer -Cable that can be installed in ducts, plenums, or
other spaces used for environmental air.
What is a Riser cable? - Correct Answer -Cable to be used in vertical wire runs in shafts
between floors. Not to be used where Plenum cable is required.
It is capable of preventing fire from rising from floor to floor.
What is general purpose cable? - Correct Answer -Cable for general purpose fire alarm use.
Not to be used where plenum cable or riser cable is required.
It is resistant to the spread of fire.
Why 'type' shall plenum cable be? What substitutions are allowed? - Correct Answer -Power
Limited Fire Alarm Plenum (F.P.L.P) C.M.P can be substituted.
Why 'type' shall riser cable be? What substitutions are allowed? - Correct Answer -Power
Limited Fire Alarm Riser (F.P.L.R) C.M.P, F.P.L.P.
C.M.R can be substituted.
What 'type' shall general purpose wire be? What substitutions are permitted? - Correct
Answer -Power Limited Fire Alarm (F.P.L) C.M.P, F.P.L.P, C.M.R, F.P.L.R, C.M.G
CM can be substituted (all types)
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QUESTIONS WITH ANSWERS | GRADED A+ .
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.
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.
Single conductors shall not be smaller than ___ A.W.G? - Correct Answer -18
1
, Conductors of 28 A.W.G shall only be permitted in which circumstance? - Correct Answer -
Spliced with a connector listed as suitable for 26 to 24 A.W.G
How shall P.F.L.A conductors NOT be installed? - Correct Answer -P.F.L.A conductors shall
not be strapped, taped, or attached to the exterior of any conduit or raceway.
What is Plenum cable? - Correct Answer -Cable that can be installed in ducts, plenums, or
other spaces used for environmental air.
What is a Riser cable? - Correct Answer -Cable to be used in vertical wire runs in shafts
between floors. Not to be used where Plenum cable is required.
It is capable of preventing fire from rising from floor to floor.
What is general purpose cable? - Correct Answer -Cable for general purpose fire alarm use.
Not to be used where plenum cable or riser cable is required.
It is resistant to the spread of fire.
Why 'type' shall plenum cable be? What substitutions are allowed? - Correct Answer -Power
Limited Fire Alarm Plenum (F.P.L.P) C.M.P can be substituted.
Why 'type' shall riser cable be? What substitutions are allowed? - Correct Answer -Power
Limited Fire Alarm Riser (F.P.L.R) C.M.P, F.P.L.P.
C.M.R can be substituted.
What 'type' shall general purpose wire be? What substitutions are permitted? - Correct
Answer -Power Limited Fire Alarm (F.P.L) C.M.P, F.P.L.P, C.M.R, F.P.L.R, C.M.G
CM can be substituted (all types)
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