TFM 12 exam with correct answers
What does PLFA stand for? - ** VERIFIED ANSWERS **✔✔Power Limited Fire Alarm
What does NPLFA stand for? - ** VERIFIED ANSWERS **✔✔Non-Power Limited Fire Alarm
What material must NPLFA circuit conductors be made from? - ** VERIFIED ANSWERS
**✔✔Solid or stranded copper
What is a single station detector? - ** VERIFIED ANSWERS **✔✔Battery powered smoke
detectors that do not communicate off premises.
What is a multiple station detector? - ** VERIFIED ANSWERS **✔✔Mains powered smoke
detectors with battery backup that are linked together, so that if one unit initiates, alarms in all
detectors will sound. They do not communicate off premises.
How frequently must household single and multiple station detectors be inspected and tested? - **
VERIFIED ANSWERS **✔✔In accordance with the manufacturers recommendations, at least
monthly
How frequently must household fire alarm systems be inspected and tested? - ** VERIFIED
ANSWERS **✔✔At least every 3 years, by a qualified service technician.
What does 'restorable' mean? - ** VERIFIED ANSWERS **✔✔The detector can be 'restored' or
'reused' after it has initiated an alarm.
What size conductors are permitted? - ** VERIFIED ANSWERS **✔✔Size 18AWG and 16AWG
What is used to protect transformers or other devices supplied from power-supply conductors? - **
VERIFIED ANSWERS **✔✔An overcurrent device not rated over 20 Amperes.
, When located within 7ft of the floor, how shall cables be fastened? - ** VERIFIED ANSWERS
**✔✔Cables shall be fastened in an approved manner at intervals of not more than 18 inches.
Single conductors shall not be smaller than __________ AWG - ** VERIFIED ANSWERS
**✔✔18
Conductors of 26AWG shall only be permitted in which circumstances? - ** VERIFIED
ANSWERS **✔✔Where spliced with a connector listed as suitable for 26 to 24 AWG
What is a Plenum cable? - ** VERIFIED ANSWERS **✔✔Cable that can be installed in ducts
and other spaces used for environmental air.
What is Riser cable? - ** VERIFIED ANSWERS **✔✔Cable to be used in vertical wire runs in
shafts or between floors.
What is General Purpose cable? - ** VERIFIED ANSWERS **✔✔Cable for general purpose fire
alarm use
What 'type' shall plenum cable be? What substitutions are allowed? - ** VERIFIED ANSWERS
**✔✔FPLP
What 'type' shall riser wire be? What substitutions are permitted? - ** VERIFIED ANSWERS
**✔✔FPLR
What 'type' shall general purpose wire be? What substitutions are permitted? - ** VERIFIED
ANSWERS **✔✔FPL
What is the maximum voltage permitted through multi-conductor NPLFA cables? - ** VERIFIED
ANSWERS **✔✔150 volts
What does PLFA stand for? - ** VERIFIED ANSWERS **✔✔Power Limited Fire Alarm
What does NPLFA stand for? - ** VERIFIED ANSWERS **✔✔Non-Power Limited Fire Alarm
What material must NPLFA circuit conductors be made from? - ** VERIFIED ANSWERS
**✔✔Solid or stranded copper
What is a single station detector? - ** VERIFIED ANSWERS **✔✔Battery powered smoke
detectors that do not communicate off premises.
What is a multiple station detector? - ** VERIFIED ANSWERS **✔✔Mains powered smoke
detectors with battery backup that are linked together, so that if one unit initiates, alarms in all
detectors will sound. They do not communicate off premises.
How frequently must household single and multiple station detectors be inspected and tested? - **
VERIFIED ANSWERS **✔✔In accordance with the manufacturers recommendations, at least
monthly
How frequently must household fire alarm systems be inspected and tested? - ** VERIFIED
ANSWERS **✔✔At least every 3 years, by a qualified service technician.
What does 'restorable' mean? - ** VERIFIED ANSWERS **✔✔The detector can be 'restored' or
'reused' after it has initiated an alarm.
What size conductors are permitted? - ** VERIFIED ANSWERS **✔✔Size 18AWG and 16AWG
What is used to protect transformers or other devices supplied from power-supply conductors? - **
VERIFIED ANSWERS **✔✔An overcurrent device not rated over 20 Amperes.
, When located within 7ft of the floor, how shall cables be fastened? - ** VERIFIED ANSWERS
**✔✔Cables shall be fastened in an approved manner at intervals of not more than 18 inches.
Single conductors shall not be smaller than __________ AWG - ** VERIFIED ANSWERS
**✔✔18
Conductors of 26AWG shall only be permitted in which circumstances? - ** VERIFIED
ANSWERS **✔✔Where spliced with a connector listed as suitable for 26 to 24 AWG
What is a Plenum cable? - ** VERIFIED ANSWERS **✔✔Cable that can be installed in ducts
and other spaces used for environmental air.
What is Riser cable? - ** VERIFIED ANSWERS **✔✔Cable to be used in vertical wire runs in
shafts or between floors.
What is General Purpose cable? - ** VERIFIED ANSWERS **✔✔Cable for general purpose fire
alarm use
What 'type' shall plenum cable be? What substitutions are allowed? - ** VERIFIED ANSWERS
**✔✔FPLP
What 'type' shall riser wire be? What substitutions are permitted? - ** VERIFIED ANSWERS
**✔✔FPLR
What 'type' shall general purpose wire be? What substitutions are permitted? - ** VERIFIED
ANSWERS **✔✔FPL
What is the maximum voltage permitted through multi-conductor NPLFA cables? - ** VERIFIED
ANSWERS **✔✔150 volts
