Page |1
Maine Gas (2025) EXAM QUESTIONS AND
ALL CORRECT ANSWERS 100% SOLVED
AND GUARANTEED SUCCESS!! Questions
and Correct Answers/ Latest Update /
Already Graded
Minimum vertical height for a Type B-W gas vent above the bottom of
a wall furnace?
Ans: 12 Feet
Minimum thickness of a steel striker barrier for gas tubing protection?
Ans: 0.0508"
What is the maximum temp that a clay flue liner must be able to
withstand without cracking?
Ans: 1,800 degrees F
Combustion air obtained from indoors on the same story shall have a
minimum of...
Ans: Two openings
All rights reserved © 2025/ 2026 |
, Page |2
When gas is being supplied by a manifold located in a remote area,
what is the maximum distance the shutoff valve at the manifold can be
located from the appliance?
Ans: 50 feet
What reference standard covers the storage of liquid propane gas?
Ans: NFPA 58
A service station is being built with one boiler 28 feet away from the
meter that uses natural gas; all other equipment is electric. What size K
or L semi-rigid copper tubing should be installed to supply 205 cu. ft. of
gas per hour with an inlet pressure less than 2 psi, pressure drop of 0.3
in. W.C. and a specific gravity of 0.60?
Ans: 1 "
Maximum distance a gas shut-off valve can be installed from the
equipment it serves?
Ans: 6 feet
Maximum distance off the ceiling of the room shall an indoor
combustion air opening be installed?
Ans: 12"
All rights reserved © 2025/ 2026 |
, Page |3
What is the minimum required clearance for an unlisted pool heater on
all sides and rear?
Ans: 12"
Flanges used for gas piping shall have gaskets made of an approved
material designed to withstand temperatures, pressure and chemical
constituents of the gas. Which of the following gasket materials is not
acceptable?
Ans: Rubber
When corrosive or flammable fumes or gases are present near
appliances, a safe disposal method shall be provided. All of the
following are considered flammable or corrosive EXCEPT?!
Ans: Anhydrous Citric Acid
When a mechanical appliance is installed in an excavation deeper than
12", what shall the excavation be lined with?
Ans: Copper pan
Which type of regulator is used in series with an another pressure
regulator for the purpose of automatically taking over in an emergency
All rights reserved © 2025/ 2026 |
Maine Gas (2025) EXAM QUESTIONS AND
ALL CORRECT ANSWERS 100% SOLVED
AND GUARANTEED SUCCESS!! Questions
and Correct Answers/ Latest Update /
Already Graded
Minimum vertical height for a Type B-W gas vent above the bottom of
a wall furnace?
Ans: 12 Feet
Minimum thickness of a steel striker barrier for gas tubing protection?
Ans: 0.0508"
What is the maximum temp that a clay flue liner must be able to
withstand without cracking?
Ans: 1,800 degrees F
Combustion air obtained from indoors on the same story shall have a
minimum of...
Ans: Two openings
All rights reserved © 2025/ 2026 |
, Page |2
When gas is being supplied by a manifold located in a remote area,
what is the maximum distance the shutoff valve at the manifold can be
located from the appliance?
Ans: 50 feet
What reference standard covers the storage of liquid propane gas?
Ans: NFPA 58
A service station is being built with one boiler 28 feet away from the
meter that uses natural gas; all other equipment is electric. What size K
or L semi-rigid copper tubing should be installed to supply 205 cu. ft. of
gas per hour with an inlet pressure less than 2 psi, pressure drop of 0.3
in. W.C. and a specific gravity of 0.60?
Ans: 1 "
Maximum distance a gas shut-off valve can be installed from the
equipment it serves?
Ans: 6 feet
Maximum distance off the ceiling of the room shall an indoor
combustion air opening be installed?
Ans: 12"
All rights reserved © 2025/ 2026 |
, Page |3
What is the minimum required clearance for an unlisted pool heater on
all sides and rear?
Ans: 12"
Flanges used for gas piping shall have gaskets made of an approved
material designed to withstand temperatures, pressure and chemical
constituents of the gas. Which of the following gasket materials is not
acceptable?
Ans: Rubber
When corrosive or flammable fumes or gases are present near
appliances, a safe disposal method shall be provided. All of the
following are considered flammable or corrosive EXCEPT?!
Ans: Anhydrous Citric Acid
When a mechanical appliance is installed in an excavation deeper than
12", what shall the excavation be lined with?
Ans: Copper pan
Which type of regulator is used in series with an another pressure
regulator for the purpose of automatically taking over in an emergency
All rights reserved © 2025/ 2026 |
