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TFM 12 Fire Alarm Technical 2023/2024 already graded A+
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TFM 12 Fire Alarm Technical 2023/2024 already graded A+
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TFM 12 Fire Alarm TechnicalDoes a fire hood system and a kitchen need to be monitored by the fire alarm system? -
ANSYes
What does P.L.F.A stand for? - ANSPower Limited Fire Alarm
What does N.P.L.F.A stand for? - ANSNon-Power Limited Fire Alarm
What is the difference between P.F.L.A and N.P.F.L.A? - ANSan 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? - ANSONLY solid stranded
copper is permitted.
What does A.W.G stand for? - ANSAmerican Wire Gauge
What size conductors are permitted? - ANSSize 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? -
ANSAn over-current device not rated over 20 amperes.
When located within 7 feet of the floor, how shall cables be fastened? - ANSCables 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? - ANS18
Conductors of 28 A.W.G shall only be permitted in which circumstance? - ANSSpliced with a
connector listed as suitable for 26 to 24 A.W.G
How shall P.F.L.A conductors NOT be installed? - ANSP.F.L.A conductors shall not be strapped,
taped, or attached to the exterior of any conduit or raceway.
What is Plenum cable? - ANSCable that can be installed in ducts, plenums, or other spaces
used for environmental air.
What is a Riser cable? - ANSCable 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? - ANSCable 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? - ANSPower Limited Fire
Alarm Plenum (F.P.L.P) C.M.P can be substituted.
Why 'type' shall riser cable be? What substitutions are allowed? - ANSPower 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? - ANSPower
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)
What is the maximum voltage permitted through multi-conductor N.P.F.L.A cables? - ANS150
volts
What is the voltage rating marked on P.F.L.A cables? - ANSNot less than 300 volts
Shall the voltage rating marked on P.F.L.A cables? - ANSNo, because they may be mistakenly
used for electrical applications.
What is 'Rate Compensation Detector'? - ANSA device that responds when a temperature rises
at an exceeding rate that is predetermined.
What is a 'Smoke Detector'? - ANSa device that detects both visible and invisible combustion
particles?
Which detector is best a detecting invisible particles? - ANSIonization
Which sensor is better at detecting thick, visible smoke particles? - ANSPhotoelectric
What is a SPOT TYPE sensor? - ANSa device in which detecting an element is concentrated at
a particular location.
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