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Gas Technician G2 Exam (New 2024/ 2025)
Questions and Verified Answers| 100%
Correct| A Grade
Q: Posts protecting piping and tubing entering a building from vehicular damage shall be?
a. clearly marked and identified with yellow paint
b. Be spaced not more than 48" apart
c. Buried not less than 36" below grade
d. Made from 6x6 pressure treated wood
Answer:
Buried not less than 36" below grade
(6.16.15)
Q: The equivalent length of a 2 1/2 NPS forged tee is?
a. 9.25'
b. 12.4'
c. 15.3'
d. 10.3'
Answer:
9.25' (Table A 16)
Q: What is the maximum horizontal spacing of supports for N.P.S. 1 1/4 inch gas pipe?
a. 8'
b. 15'
c. 6'
d. 10'
Answer:
10' (3m) (Table 6.2)
Q: When gas piping enters a building, it must?
a. Enter above grade
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b. Be taped, painted, and sleeved
c. Have a tracer wire
d. Enter below grade
Answer:
Enter above grade (6.15.8)
Q: When sizing a branch line, what is the minimum size of job fabricated welding fittings that
can be used on a NPS 6 gas supply header?
a. 2" NPS
b. 3/4" NPS
c. 3" NPS
d. 1/2" NPS
Answer:
3/4" NPS (6.8.8)
Q: A dirt pockets shall be installed at the bottom of any piping or tubing, on the final drop
serving an appliance other than a(n)
a. Unit Heater
b. Furnace
c. Clothes dryer
d. Boiler
Answer:
Clothes dryer (6.13.1)
Q: Direct-vent wall furnace shall use what maximum length of corrugated metal gas connector?
a. 6 ft.
b. 4 ft.
c. 8 ft.
d. 2 ft.
Answer:
2 ft. (6.21.3(c))
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Q: Every gas hose and gas fitting shall have a minimum working pressure of what.
a. 275 PSIG minimum or the setting of the hydrostatic relief valves.
b. 350 PSIG for piping and tubing operating at a container.
c. 350 PSIG
d. 250 PSIG when connected to the outlet of a pump or compressor.
Answer:
350 PSIG (6.2.9)
Q: What are the requirements for back filling underground piping or tubing?
a. It shall not have stones larger than 38 mm
b. The fill material shall contain no sharp objects.
c. A trench must be dug 15 inches deep
d. All of the choices
Answer:
The fill material shall contain no sharp objects (6.15.6)
Q: Question 17
What is the approximate purging time for NPS 1 that is 40 feet in length?
a. 7 Seconds
b. 28 Seconds
c. 14 Seconds
d. 43 Seconds
Answer:
28 seconds (Annex H Table H.1)
Q: What is the maximum distance a readily accessible manual shut-off valve may be installed
from an appliance?
a. 2 ft. and identified
b. 10 ft. and identified
c. 25 ft. and identified
d. 50 ft. and identified
Answer:
50 ft. and identified (6.18.2(d))
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Q: What is the minimum unthreaded portion of a piping outlet required when installing a gas
piping through a floor for a range?
a. 2 Inches
b. 6 Inches
c. 3 Inches
d. 12 Inches
Answer:
2 inches (6.12.2)
Q: When a high pressure test is required on a gas piping system, what type of medium would
you use to perform this test.
a. High Pressure gas
b. Static pressure using gas
c. Low pressure gas
d. Air or an inert gas
Answer:
Air or an inert gas
Q: Nesting of bushings is permitted
True
False
Answer:
False (6.14.2)
Q: Underground piping shall be joined or connected by welding, approved mechanical
compression, or press-connect fittings.
True
False
Answer:
True (6.15.2)
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Gas technician
Guide g2 Page 1 of 74
Gas Technician G2 Exam (New 2024/ 2025)
Questions and Verified Answers| 100%
Correct| A Grade
Q: Posts protecting piping and tubing entering a building from vehicular damage shall be?
a. clearly marked and identified with yellow paint
b. Be spaced not more than 48" apart
c. Buried not less than 36" below grade
d. Made from 6x6 pressure treated wood
Answer:
Buried not less than 36" below grade
(6.16.15)
Q: The equivalent length of a 2 1/2 NPS forged tee is?
a. 9.25'
b. 12.4'
c. 15.3'
d. 10.3'
Answer:
9.25' (Table A 16)
Q: What is the maximum horizontal spacing of supports for N.P.S. 1 1/4 inch gas pipe?
a. 8'
b. 15'
c. 6'
d. 10'
Answer:
10' (3m) (Table 6.2)
Q: When gas piping enters a building, it must?
a. Enter above grade
Page 1 of 74 | Verified Questions & Fully Worked Answers | Complete Exam Preparation Guide Gas technician g2.pdf
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Guide g2 Page 2 of 74
b. Be taped, painted, and sleeved
c. Have a tracer wire
d. Enter below grade
Answer:
Enter above grade (6.15.8)
Q: When sizing a branch line, what is the minimum size of job fabricated welding fittings that
can be used on a NPS 6 gas supply header?
a. 2" NPS
b. 3/4" NPS
c. 3" NPS
d. 1/2" NPS
Answer:
3/4" NPS (6.8.8)
Q: A dirt pockets shall be installed at the bottom of any piping or tubing, on the final drop
serving an appliance other than a(n)
a. Unit Heater
b. Furnace
c. Clothes dryer
d. Boiler
Answer:
Clothes dryer (6.13.1)
Q: Direct-vent wall furnace shall use what maximum length of corrugated metal gas connector?
a. 6 ft.
b. 4 ft.
c. 8 ft.
d. 2 ft.
Answer:
2 ft. (6.21.3(c))
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Guide g2 Page 3 of 74
Q: Every gas hose and gas fitting shall have a minimum working pressure of what.
a. 275 PSIG minimum or the setting of the hydrostatic relief valves.
b. 350 PSIG for piping and tubing operating at a container.
c. 350 PSIG
d. 250 PSIG when connected to the outlet of a pump or compressor.
Answer:
350 PSIG (6.2.9)
Q: What are the requirements for back filling underground piping or tubing?
a. It shall not have stones larger than 38 mm
b. The fill material shall contain no sharp objects.
c. A trench must be dug 15 inches deep
d. All of the choices
Answer:
The fill material shall contain no sharp objects (6.15.6)
Q: Question 17
What is the approximate purging time for NPS 1 that is 40 feet in length?
a. 7 Seconds
b. 28 Seconds
c. 14 Seconds
d. 43 Seconds
Answer:
28 seconds (Annex H Table H.1)
Q: What is the maximum distance a readily accessible manual shut-off valve may be installed
from an appliance?
a. 2 ft. and identified
b. 10 ft. and identified
c. 25 ft. and identified
d. 50 ft. and identified
Answer:
50 ft. and identified (6.18.2(d))
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Q: What is the minimum unthreaded portion of a piping outlet required when installing a gas
piping through a floor for a range?
a. 2 Inches
b. 6 Inches
c. 3 Inches
d. 12 Inches
Answer:
2 inches (6.12.2)
Q: When a high pressure test is required on a gas piping system, what type of medium would
you use to perform this test.
a. High Pressure gas
b. Static pressure using gas
c. Low pressure gas
d. Air or an inert gas
Answer:
Air or an inert gas
Q: Nesting of bushings is permitted
True
False
Answer:
False (6.14.2)
Q: Underground piping shall be joined or connected by welding, approved mechanical
compression, or press-connect fittings.
True
False
Answer:
True (6.15.2)
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