Fire Alarm TFM12:Questions And Answers
Study Guide 2025\2026 A+ Grade
What does PLFA stand for?
- accurate answers-Power Limited Fire Alarm
What does NPLFA stand for?
- accurate answers-Non Power Limited Fire Alarm
What material must NPLFA circuit conductors be made from
- accurate answers-Only solid or stranded copper is permitted
What is a single station detector?
- accurate answers-Battery powered smoke detectors that do not
communicate off premises.
What is a multiple station detector?
- accurate 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 single station detectors
be inspected and tested?
- accurate answers-In accordance with the manufactures recommendations, at
least monthly.
How frequently must household single and multiple station detectors be
inspected and tested?
- accurate answers-At least 3 years, by a qualified service technician.
How frequently must heat detectors be tested?
- accurate answers-Two or more annually, different detectors must be tested
each year, and within 5 years all detectors must have been tested.
What does "restorable" mean?
- accurate answers-The detector can be "restored" or "reused" after it has
initiated.
, What does "non-restorable" mean?
- accurate answers-The detector cannot be 're-used" after it has initiated an
alarm. (Think of a heat detector, which self destructs upon initiating.)
What size conductors are permitted?
- accurate answers-Size 18 AWG and 16 AWG are permitted, provided they do
not exceed certain rated ampacities
What is used to protect transformers or other devices supplied from power-
supply conductors?
- accurate answers-An overcurrent device not rated over 20 Amperes
When located within 7ft of the floor, how shall cables be fastened?
- accurate answers-Cables shall be fastened in an approved manner at
intervals of not more than 18 inches.
Single conductors shall not be smaller that ___ AWG?
- accurate answers-18
Conductors of 26AWG shall only be permitted in which circumstances?
- accurate answers-Where spliced with a connector listed as suitable for 26 to
24 AWG.
How should PLFA conductors NOT be installed?
- accurate answers-PLFA conductors shall not be strapped, taped or attached
to the exterior of any conduit or raceway.
What is Plenum cable? What are its characteristics?
- accurate answers-Cable that can be installed in ducts, plenums or other
spaces used for environment air. It has adequate fire resistance and low
smoke-producing characteristics.
What is riser cable? What are its characteristics?
- accurate answers-Cable to be used in vertical wire runs in shafts or between
floors. Not to be used where Plenum cable is required. It is capable of
preventing fire from rising form floor-to-floor.
Study Guide 2025\2026 A+ Grade
What does PLFA stand for?
- accurate answers-Power Limited Fire Alarm
What does NPLFA stand for?
- accurate answers-Non Power Limited Fire Alarm
What material must NPLFA circuit conductors be made from
- accurate answers-Only solid or stranded copper is permitted
What is a single station detector?
- accurate answers-Battery powered smoke detectors that do not
communicate off premises.
What is a multiple station detector?
- accurate 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 single station detectors
be inspected and tested?
- accurate answers-In accordance with the manufactures recommendations, at
least monthly.
How frequently must household single and multiple station detectors be
inspected and tested?
- accurate answers-At least 3 years, by a qualified service technician.
How frequently must heat detectors be tested?
- accurate answers-Two or more annually, different detectors must be tested
each year, and within 5 years all detectors must have been tested.
What does "restorable" mean?
- accurate answers-The detector can be "restored" or "reused" after it has
initiated.
, What does "non-restorable" mean?
- accurate answers-The detector cannot be 're-used" after it has initiated an
alarm. (Think of a heat detector, which self destructs upon initiating.)
What size conductors are permitted?
- accurate answers-Size 18 AWG and 16 AWG are permitted, provided they do
not exceed certain rated ampacities
What is used to protect transformers or other devices supplied from power-
supply conductors?
- accurate answers-An overcurrent device not rated over 20 Amperes
When located within 7ft of the floor, how shall cables be fastened?
- accurate answers-Cables shall be fastened in an approved manner at
intervals of not more than 18 inches.
Single conductors shall not be smaller that ___ AWG?
- accurate answers-18
Conductors of 26AWG shall only be permitted in which circumstances?
- accurate answers-Where spliced with a connector listed as suitable for 26 to
24 AWG.
How should PLFA conductors NOT be installed?
- accurate answers-PLFA conductors shall not be strapped, taped or attached
to the exterior of any conduit or raceway.
What is Plenum cable? What are its characteristics?
- accurate answers-Cable that can be installed in ducts, plenums or other
spaces used for environment air. It has adequate fire resistance and low
smoke-producing characteristics.
What is riser cable? What are its characteristics?
- accurate answers-Cable to be used in vertical wire runs in shafts or between
floors. Not to be used where Plenum cable is required. It is capable of
preventing fire from rising form floor-to-floor.
