Class K Study Guide NFPA 96/17A questions and
answers A+ Grade 2026\2027
Branch Duct
- correct answer the duct work that contains the exhaust air from a single hood or hazard area.
Common Duct
- correct answer the duct work containing the exhaust air from two or more branch ducts.
4.3.1.1 Discharge nozzles shall be provided with an ________ or a _________ located immediately up-
stream of the nozzle.
- correct answer "Internal Strainer" "separate listed strainer"
4.3.1.2 Discharge nozzles shall be of ______, _______, or other corrosion-resistant materials or be
protected inside and out against corrosion.
- correct answer "brass", "stainless steel"
4.3.1.4 Discharge nozzles shall be __________ __________ for identification.
- correct answer "permanently marked"
4.3.1.5 All discharge nozzles shall be provided with ______ or _______ to prevent the entrance of grease
vapors, moisture, environmental contaminants, or other foreign materials into the piping.
- correct answer "caps" "or other suitable devices"
4.4.3.1 Manual actuators shall not require a force of more than ____.
- correct answer "40lbs"
4.4.3.2 Manual actuators shall not require a movement of more than _______ to secure operation.
- correct answer "14inches"
, 4.4.3.3 All manual actuators shall be provided with _______.
- correct answer "operating instructions"
4.4.4.1 On actuation of any cooking equipment fire extinguishing system, all sources of fuel and electric
power that produce heat to all equipment protected by the system shall _______
- correct answer "be shut down"
4.4.4.2 Gas appliances not requiring protection but located under the same ventilation equipment shall
_______
- correct answer "also be shut off"
4.4.4.5 Exhaust fans and dampers shall not be required to be _______ on system actuation as the
systems have been tested under both zero- and high-velocity flow conditions.
- correct answer "shut down"
4.4.4.7 Shutoff devices shall require _______ prior to fuel or power being restored.
- correct answer "manual resetting"
4.5.1 Pipe and associated fittings shall be of ________ material having physical and chemical
characteristics compatible with the wet chemical solution.
- correct answer "non-combustible"
4.5.2 _______ pipe and fittings shall not be used unless specifically listed with the system.
- correct answer "Galvanized"
5.1 Wet chemical fire-extinguishing systems for use in cooking operations shall comply with _________.
- correct answer "ANSI/UL300"
5.1.2.3 When two or more hazards can be simultaneously involved in fire by reason of their proximity,
the hazards shall be protected by either of the following:
- correct answer 1. Individual system installed on each hazard to operate simultaneously.
2. A single system designed and installed to protect all hazards that can be simultaneously involved.
answers A+ Grade 2026\2027
Branch Duct
- correct answer the duct work that contains the exhaust air from a single hood or hazard area.
Common Duct
- correct answer the duct work containing the exhaust air from two or more branch ducts.
4.3.1.1 Discharge nozzles shall be provided with an ________ or a _________ located immediately up-
stream of the nozzle.
- correct answer "Internal Strainer" "separate listed strainer"
4.3.1.2 Discharge nozzles shall be of ______, _______, or other corrosion-resistant materials or be
protected inside and out against corrosion.
- correct answer "brass", "stainless steel"
4.3.1.4 Discharge nozzles shall be __________ __________ for identification.
- correct answer "permanently marked"
4.3.1.5 All discharge nozzles shall be provided with ______ or _______ to prevent the entrance of grease
vapors, moisture, environmental contaminants, or other foreign materials into the piping.
- correct answer "caps" "or other suitable devices"
4.4.3.1 Manual actuators shall not require a force of more than ____.
- correct answer "40lbs"
4.4.3.2 Manual actuators shall not require a movement of more than _______ to secure operation.
- correct answer "14inches"
, 4.4.3.3 All manual actuators shall be provided with _______.
- correct answer "operating instructions"
4.4.4.1 On actuation of any cooking equipment fire extinguishing system, all sources of fuel and electric
power that produce heat to all equipment protected by the system shall _______
- correct answer "be shut down"
4.4.4.2 Gas appliances not requiring protection but located under the same ventilation equipment shall
_______
- correct answer "also be shut off"
4.4.4.5 Exhaust fans and dampers shall not be required to be _______ on system actuation as the
systems have been tested under both zero- and high-velocity flow conditions.
- correct answer "shut down"
4.4.4.7 Shutoff devices shall require _______ prior to fuel or power being restored.
- correct answer "manual resetting"
4.5.1 Pipe and associated fittings shall be of ________ material having physical and chemical
characteristics compatible with the wet chemical solution.
- correct answer "non-combustible"
4.5.2 _______ pipe and fittings shall not be used unless specifically listed with the system.
- correct answer "Galvanized"
5.1 Wet chemical fire-extinguishing systems for use in cooking operations shall comply with _________.
- correct answer "ANSI/UL300"
5.1.2.3 When two or more hazards can be simultaneously involved in fire by reason of their proximity,
the hazards shall be protected by either of the following:
- correct answer 1. Individual system installed on each hazard to operate simultaneously.
2. A single system designed and installed to protect all hazards that can be simultaneously involved.
