TFM
TFM 12 Fire Alarm Technical Exam with
Accurate Solutions 2023
Does a fire hood system and a kitchen need to be monitored by the fire alarm system? -
Yes
What does P.L.F.A stand for? - Power Limited Fire Alarm
What does N.P.L.F.A stand for? - Non-Power Limited Fire Alarm
What is the difference between P.F.L.A and N.P.F.L.A? - 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? - ONLY solid stranded
copper is
permitted.
What does A.W.G stand for? - American Wire Gauge
What size conductors are permitted? - 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? - An over-current device not rated over 20 amperes.
When located within 7 feet of the floor, how shall cables be fastened? - 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? - 18
Conductors of 28 A.W.G shall only be permitted in which circumstance? - Spliced with a
connector listed as suitable for 26 to 24 A.W.G
How shall P.F.L.A conductors NOT be installed? - P.F.L.A conductors shall not be
strapped, taped, or attached to the exterior of any conduit or raceway.
What is Plenum cable? - Cable that can be installed in ducts, plenums, or other spaces
TFM 12 Fire Alarm Technical Exam with Accurate Solutions 2023
, TFM
used for environmental air.
What is a Riser cable? - 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? - 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? - 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? - 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? - 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)
What is the maximum voltage permitted through multi-conductor N.P.F.L.A cables? -
150
volts
What is the voltage rating marked on P.F.L.A cables? - Not less than 300 volts
Shall the voltage rating marked on P.F.L.A cables? - No, because they may be
mistakenly used for electrical applications.
What is 'Rate Compensation Detector'? - A device that responds when a temperature
rises at an exceeding rate that is
predetermined.
What is a 'Smoke Detector'? - a device that detects both visible and invisible
combustion
particles?
TFM 12 Fire Alarm Technical Exam with Accurate Solutions 2023
TFM 12 Fire Alarm Technical Exam with
Accurate Solutions 2023
Does a fire hood system and a kitchen need to be monitored by the fire alarm system? -
Yes
What does P.L.F.A stand for? - Power Limited Fire Alarm
What does N.P.L.F.A stand for? - Non-Power Limited Fire Alarm
What is the difference between P.F.L.A and N.P.F.L.A? - 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? - ONLY solid stranded
copper is
permitted.
What does A.W.G stand for? - American Wire Gauge
What size conductors are permitted? - 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? - An over-current device not rated over 20 amperes.
When located within 7 feet of the floor, how shall cables be fastened? - 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? - 18
Conductors of 28 A.W.G shall only be permitted in which circumstance? - Spliced with a
connector listed as suitable for 26 to 24 A.W.G
How shall P.F.L.A conductors NOT be installed? - P.F.L.A conductors shall not be
strapped, taped, or attached to the exterior of any conduit or raceway.
What is Plenum cable? - Cable that can be installed in ducts, plenums, or other spaces
TFM 12 Fire Alarm Technical Exam with Accurate Solutions 2023
, TFM
used for environmental air.
What is a Riser cable? - 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? - 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? - 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? - 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? - 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)
What is the maximum voltage permitted through multi-conductor N.P.F.L.A cables? -
150
volts
What is the voltage rating marked on P.F.L.A cables? - Not less than 300 volts
Shall the voltage rating marked on P.F.L.A cables? - No, because they may be
mistakenly used for electrical applications.
What is 'Rate Compensation Detector'? - A device that responds when a temperature
rises at an exceeding rate that is
predetermined.
What is a 'Smoke Detector'? - a device that detects both visible and invisible
combustion
particles?
TFM 12 Fire Alarm Technical Exam with Accurate Solutions 2023
