Propane & Gas Exam UPDATED ACTUAL
Exam Questions and CORRECT Answers
3' - CORRECT ANSWER - When installing a listed central heating furnaces, and the
installation instructions requires you to maintain 6" clearance from the supply air plenum to
combustibles, the supply air ducts connecting to the plenum should also maintain the 6"
clearance for what minimum distance from the plenum?
211 - CORRECT ANSWER - Masonry chimneys should be built and installed to NFPA
code___________
5% - CORRECT ANSWER - What is the lower flammability list limit for natural gas?
6" - CORRECT ANSWER - What is the minimum clearance to combustible material for a
type l clothes dryer?
6, 3 - CORRECT ANSWER - When installing an unlisted central heating furnace, and the
limit control has a maximum setting of 250 degrees, the clearance from the supply air plenum to
combustibles is ________ inches, and the supply air ducts connecting to the plenum should also
maintain the same clearance for what minimum distance from the plenum?__________ Feet
True - CORRECT ANSWER - When a masonry chimney is lined with a gas vent (B Vent)
a label is required at the point where vent enters the chimney? True or False
15 ft - CORRECT ANSWER - Above what roof height does the code call for an indoor
means of access for rooftop located units?
True - CORRECT ANSWER - When using # 12 NM cable in an unfinished basement and
the cable is run at an angle with the floor joists, the cable may be supported by stapling and
securing to the lower edge of the joists. True & False
,True - CORRECT ANSWER - A pressure switch installed by the manufacturer and
specified by the manufacturer as low-water protection shall be accepted as meeting the low water
cutoff requirement in the state of Maine. True & False
20, 80 - CORRECT ANSWER - Air is made up of approximately _______% oxygen and
__________ % nitrogen
211 - CORRECT ANSWER - Masonry chimneys should be built and installed to
NFPA________
12 - CORRECT ANSWER - The bottom of the vent terminal an air intake for a through
the wall direct vent terminal of 60,000 BTUH appliance must be located not less than
__________ inches above finished ground level.
On the Same Story: Opening shall have the minimum of 1 square inch per 1000 BTUH
On Different Stories: Opening shall have the minimum of 2 square inch per 1000 BTUH -
CORRECT ANSWER - When combining spaces to meet the required volume for
combustion and ventilation what are the rules for openings connecting the spaces:
On the Same Story __________________________
On Different Stories ________________________
b. Each appliance should have its own circuit. - CORRECT ANSWER - When installing
multiple appliances in an equipment room in a commercial building, How many electrical
circuits are required for the appliances?
a. One circuit can serve all the appliances
b. Each appliance should have its own circuit.
, 920 - 1020 - CORRECT ANSWER - What is the minimum ignition temperature for
propane?
5, 15 - CORRECT ANSWER - What is the upper flammability limi for natural gas?
________ What is the lower flammability limit for natural gas? ____________
NO - CORRECT ANSWER - Is a through the wall direct vent terminal for a category lV
allowed to exit above a public walkway? Yes NO
12 inches - CORRECT ANSWER - When installing combustion air ducts from an
equipment room to the outdoors, the bottom of the duct shall be at least _________ above the
finished ground level.
6 - CORRECT ANSWER - Trade size 3/8" flexible metal conduit being used to wire a
boiler or warm air system, may be used in lengths not greater than ________ ft
True - CORRECT ANSWER - When performing any service on a customers gas system,
the licensee must notify the homeowner of any code violations and make recommendations to
address them. True or False
6 - CORRECT ANSWER - What is the minimum clearance to combustibles for a type l
clothes dryer? ________ Inches
6 ft - CORRECT ANSWER - You are connecting an appliance in a repair shop that
requires mobility and are using a listed non-metallic gas hose connector. What is the maximum
length of the connector?
4 1/2, 12 - CORRECT ANSWER - Flexible metal conduit shall be secured and supported
at intervals to less than ________ft and within __________ inches of a box or enclosure.
Exam Questions and CORRECT Answers
3' - CORRECT ANSWER - When installing a listed central heating furnaces, and the
installation instructions requires you to maintain 6" clearance from the supply air plenum to
combustibles, the supply air ducts connecting to the plenum should also maintain the 6"
clearance for what minimum distance from the plenum?
211 - CORRECT ANSWER - Masonry chimneys should be built and installed to NFPA
code___________
5% - CORRECT ANSWER - What is the lower flammability list limit for natural gas?
6" - CORRECT ANSWER - What is the minimum clearance to combustible material for a
type l clothes dryer?
6, 3 - CORRECT ANSWER - When installing an unlisted central heating furnace, and the
limit control has a maximum setting of 250 degrees, the clearance from the supply air plenum to
combustibles is ________ inches, and the supply air ducts connecting to the plenum should also
maintain the same clearance for what minimum distance from the plenum?__________ Feet
True - CORRECT ANSWER - When a masonry chimney is lined with a gas vent (B Vent)
a label is required at the point where vent enters the chimney? True or False
15 ft - CORRECT ANSWER - Above what roof height does the code call for an indoor
means of access for rooftop located units?
True - CORRECT ANSWER - When using # 12 NM cable in an unfinished basement and
the cable is run at an angle with the floor joists, the cable may be supported by stapling and
securing to the lower edge of the joists. True & False
,True - CORRECT ANSWER - A pressure switch installed by the manufacturer and
specified by the manufacturer as low-water protection shall be accepted as meeting the low water
cutoff requirement in the state of Maine. True & False
20, 80 - CORRECT ANSWER - Air is made up of approximately _______% oxygen and
__________ % nitrogen
211 - CORRECT ANSWER - Masonry chimneys should be built and installed to
NFPA________
12 - CORRECT ANSWER - The bottom of the vent terminal an air intake for a through
the wall direct vent terminal of 60,000 BTUH appliance must be located not less than
__________ inches above finished ground level.
On the Same Story: Opening shall have the minimum of 1 square inch per 1000 BTUH
On Different Stories: Opening shall have the minimum of 2 square inch per 1000 BTUH -
CORRECT ANSWER - When combining spaces to meet the required volume for
combustion and ventilation what are the rules for openings connecting the spaces:
On the Same Story __________________________
On Different Stories ________________________
b. Each appliance should have its own circuit. - CORRECT ANSWER - When installing
multiple appliances in an equipment room in a commercial building, How many electrical
circuits are required for the appliances?
a. One circuit can serve all the appliances
b. Each appliance should have its own circuit.
, 920 - 1020 - CORRECT ANSWER - What is the minimum ignition temperature for
propane?
5, 15 - CORRECT ANSWER - What is the upper flammability limi for natural gas?
________ What is the lower flammability limit for natural gas? ____________
NO - CORRECT ANSWER - Is a through the wall direct vent terminal for a category lV
allowed to exit above a public walkway? Yes NO
12 inches - CORRECT ANSWER - When installing combustion air ducts from an
equipment room to the outdoors, the bottom of the duct shall be at least _________ above the
finished ground level.
6 - CORRECT ANSWER - Trade size 3/8" flexible metal conduit being used to wire a
boiler or warm air system, may be used in lengths not greater than ________ ft
True - CORRECT ANSWER - When performing any service on a customers gas system,
the licensee must notify the homeowner of any code violations and make recommendations to
address them. True or False
6 - CORRECT ANSWER - What is the minimum clearance to combustibles for a type l
clothes dryer? ________ Inches
6 ft - CORRECT ANSWER - You are connecting an appliance in a repair shop that
requires mobility and are using a listed non-metallic gas hose connector. What is the maximum
length of the connector?
4 1/2, 12 - CORRECT ANSWER - Flexible metal conduit shall be secured and supported
at intervals to less than ________ft and within __________ inches of a box or enclosure.
