Wisconsin (WI) JOURNEYMAN PLUMBER Restricted
Appliance Exam Questions And Correct Answers (Verified
Answers) Plus Explanation Q&A Instant Download Pdf.
Comprehensive examination on Wisconsin (WI) JOURNEYMAN PLUMBER Restricted Appliance Exam Questions
And Correct Answers (Verified Answers) Plus Explanation Q&A Instant Download Pdf.. It contains 50
multiple-choice questions, each with four distractors and a fully worked rationale that explains why the keyed
answer is correct. Questions are organized into clearly labelled sections that mirror the major content areas of
the course. Targeted learning outcomes include: Demonstrate mastery of core concepts. Every item has been
reviewed for clinical accuracy, current guidelines, and clarity so that students can study with confidence and
self-correct as they work through the bank. Use it as a high-yield review immediately before the exam, or as a
structured practice tool during the unit - the rationales double as concise teaching notes. The recommended
writing time is 3 hours, with a passing score of 70%. Aligned with Aligned with US university standards.
standards and reflects the question style commonly seen on accredited program examinations. Students
consistently achieving above the cut score on this bank have historically gone on to earn A+ on the corresponding
course exam. Read every stem carefully - distractors are written to look plausible, and the best answer is
sometimes the one that addresses the patient's most immediate physiological or safety need. Where multiple
options appear correct, prioritize airway, breathing, circulation, safety, and Maslow's hierarchy before
psychosocial interventions. Treat each rationale as a mini-lecture: don't just confirm the right letter, study the
Section 1: General (Questions 1-50)
1 In Wisconsin, a restricted appliance plumber may install which of the following
without additional licensure?
A) A commercial boiler with 500,000 BTU/hr input
B) A residential gas-fired water heater and space heater
C) A commercial kitchen exhaust hood system
D) A fire suppression sprinkler system
Answer: B
Rationale: Wisconsin DSPS restricts appliance plumbers to residential gas appliances
such as water heaters and space heaters under SPS 382. Commercial boilers, kitchen
hoods, and fire suppression systems require separate licensure or certifications. The
restricted appliance license specifically limits scope to residential appliances.
2 What is the minimum required clearance from a gas water heater flue to
combustible material per Wisconsin code?
A) 1 inch
B) 6 inches
C) 12 inches
D) As specified by the appliance manufacturer's listing
Answer: D
,Rationale: Wisconsin adopts the manufacturer's listed clearances for gas appliances
under SPS 340 and NFPA 54. Generic distances like 1, 6, or 12 inches are incorrect
because clearances vary by appliance type and vent configuration. The listing mark
governs the required clearance.
3 When sizing a gas piping system for a residential appliance, which factor is most
critical per Wisconsin Fuel Gas Code?
A) Pipe color
B) Total equivalent length and gas demand
C) Water heater brand
D) Ambient temperature only
Answer: B
Rationale: SPS 340 and IFGC require sizing based on total equivalent length of
piping and the total connected gas load in cubic feet per hour. Pipe color, appliance
brand, and ambient temperature alone do not determine capacity. The longest run
method ensures adequate pressure at the appliance.
4 A gas appliance is installed in a confined space. What is the required combustion
air opening size if using two permanent openings?
A) 1 square inch per 1,000 BTU/hr of total input
B) 1 square inch per 2,000 BTU/hr of total input
C) 1 square inch per 4,000 BTU/hr of total input
D) 1 square inch per 10,000 BTU/hr of total input
Answer: C
Rationale: NFPA 54 and Wisconsin SPS 340 require two permanent openings, each
sized at 1 square inch per 4,000 BTU/hr when connecting directly to outdoors. The 1
per 1,000 or 2,000 rules apply to vertical ducts or indoor air, not direct outdoor
openings. This ensures sufficient combustion air.
5 Which venting category applies to a condensing gas furnace with flue gas
temperature below 140°F?
A) Category I
B) Category II
C) Category III
D) Category IV
Answer: D
Rationale: Category IV appliances operate with positive vent pressure and flue gas
temperatures below 140°F, typical of condensing furnaces. Category I is negative
, pressure and above 140°F; Category II is negative pressure below 140°F; Category
III is positive pressure above 140°F. Wisconsin follows NFPA 54 venting categories.
6 What is the maximum allowable gas pressure drop in a residential piping system
per Wisconsin code?
A) 0.3 inches water column
B) 0.5 inches water column
C) 1.0 inches water column
D) 2.0 inches water column
Answer: B
Rationale: SPS 340 and IFGC limit pressure drop to 0.5 inches water column for
natural gas piping systems to ensure proper appliance operation. Larger drops
indicate undersized piping or excessive length. This value is standard for residential
systems.
7 Which material is approved for underground gas piping installation in Wisconsin?
A) Black steel pipe
B) Copper tubing
C) Polyethylene pipe
D) Galvanized steel pipe
Answer: C
Rationale: Polyethylene pipe is approved for underground gas piping per NFPA 54
and Wisconsin SPS 340 when properly installed with anodeless risers. Black steel
and galvanized steel are for above-ground use; copper is restricted in some
underground applications due to corrosion. PE pipe is the standard for buried gas
lines.
8 During a gas leak test, what is the minimum test pressure for a residential system
with 0.5 psig operating pressure?
A) 3 psig for 10 minutes
B) 10 psig for 30 minutes
C) 1.5 times the operating pressure for 15 minutes
D) 6 psig for 10 minutes
Answer: A
Rationale: Wisconsin requires a minimum 3 psig test for 10 minutes for low-pressure
residential systems (0.5 psig or less). Higher pressures apply to systems operating
above 0.5 psig. This test detects leaks without damaging appliance controls.
Appliance Exam Questions And Correct Answers (Verified
Answers) Plus Explanation Q&A Instant Download Pdf.
Comprehensive examination on Wisconsin (WI) JOURNEYMAN PLUMBER Restricted Appliance Exam Questions
And Correct Answers (Verified Answers) Plus Explanation Q&A Instant Download Pdf.. It contains 50
multiple-choice questions, each with four distractors and a fully worked rationale that explains why the keyed
answer is correct. Questions are organized into clearly labelled sections that mirror the major content areas of
the course. Targeted learning outcomes include: Demonstrate mastery of core concepts. Every item has been
reviewed for clinical accuracy, current guidelines, and clarity so that students can study with confidence and
self-correct as they work through the bank. Use it as a high-yield review immediately before the exam, or as a
structured practice tool during the unit - the rationales double as concise teaching notes. The recommended
writing time is 3 hours, with a passing score of 70%. Aligned with Aligned with US university standards.
standards and reflects the question style commonly seen on accredited program examinations. Students
consistently achieving above the cut score on this bank have historically gone on to earn A+ on the corresponding
course exam. Read every stem carefully - distractors are written to look plausible, and the best answer is
sometimes the one that addresses the patient's most immediate physiological or safety need. Where multiple
options appear correct, prioritize airway, breathing, circulation, safety, and Maslow's hierarchy before
psychosocial interventions. Treat each rationale as a mini-lecture: don't just confirm the right letter, study the
Section 1: General (Questions 1-50)
1 In Wisconsin, a restricted appliance plumber may install which of the following
without additional licensure?
A) A commercial boiler with 500,000 BTU/hr input
B) A residential gas-fired water heater and space heater
C) A commercial kitchen exhaust hood system
D) A fire suppression sprinkler system
Answer: B
Rationale: Wisconsin DSPS restricts appliance plumbers to residential gas appliances
such as water heaters and space heaters under SPS 382. Commercial boilers, kitchen
hoods, and fire suppression systems require separate licensure or certifications. The
restricted appliance license specifically limits scope to residential appliances.
2 What is the minimum required clearance from a gas water heater flue to
combustible material per Wisconsin code?
A) 1 inch
B) 6 inches
C) 12 inches
D) As specified by the appliance manufacturer's listing
Answer: D
,Rationale: Wisconsin adopts the manufacturer's listed clearances for gas appliances
under SPS 340 and NFPA 54. Generic distances like 1, 6, or 12 inches are incorrect
because clearances vary by appliance type and vent configuration. The listing mark
governs the required clearance.
3 When sizing a gas piping system for a residential appliance, which factor is most
critical per Wisconsin Fuel Gas Code?
A) Pipe color
B) Total equivalent length and gas demand
C) Water heater brand
D) Ambient temperature only
Answer: B
Rationale: SPS 340 and IFGC require sizing based on total equivalent length of
piping and the total connected gas load in cubic feet per hour. Pipe color, appliance
brand, and ambient temperature alone do not determine capacity. The longest run
method ensures adequate pressure at the appliance.
4 A gas appliance is installed in a confined space. What is the required combustion
air opening size if using two permanent openings?
A) 1 square inch per 1,000 BTU/hr of total input
B) 1 square inch per 2,000 BTU/hr of total input
C) 1 square inch per 4,000 BTU/hr of total input
D) 1 square inch per 10,000 BTU/hr of total input
Answer: C
Rationale: NFPA 54 and Wisconsin SPS 340 require two permanent openings, each
sized at 1 square inch per 4,000 BTU/hr when connecting directly to outdoors. The 1
per 1,000 or 2,000 rules apply to vertical ducts or indoor air, not direct outdoor
openings. This ensures sufficient combustion air.
5 Which venting category applies to a condensing gas furnace with flue gas
temperature below 140°F?
A) Category I
B) Category II
C) Category III
D) Category IV
Answer: D
Rationale: Category IV appliances operate with positive vent pressure and flue gas
temperatures below 140°F, typical of condensing furnaces. Category I is negative
, pressure and above 140°F; Category II is negative pressure below 140°F; Category
III is positive pressure above 140°F. Wisconsin follows NFPA 54 venting categories.
6 What is the maximum allowable gas pressure drop in a residential piping system
per Wisconsin code?
A) 0.3 inches water column
B) 0.5 inches water column
C) 1.0 inches water column
D) 2.0 inches water column
Answer: B
Rationale: SPS 340 and IFGC limit pressure drop to 0.5 inches water column for
natural gas piping systems to ensure proper appliance operation. Larger drops
indicate undersized piping or excessive length. This value is standard for residential
systems.
7 Which material is approved for underground gas piping installation in Wisconsin?
A) Black steel pipe
B) Copper tubing
C) Polyethylene pipe
D) Galvanized steel pipe
Answer: C
Rationale: Polyethylene pipe is approved for underground gas piping per NFPA 54
and Wisconsin SPS 340 when properly installed with anodeless risers. Black steel
and galvanized steel are for above-ground use; copper is restricted in some
underground applications due to corrosion. PE pipe is the standard for buried gas
lines.
8 During a gas leak test, what is the minimum test pressure for a residential system
with 0.5 psig operating pressure?
A) 3 psig for 10 minutes
B) 10 psig for 30 minutes
C) 1.5 times the operating pressure for 15 minutes
D) 6 psig for 10 minutes
Answer: A
Rationale: Wisconsin requires a minimum 3 psig test for 10 minutes for low-pressure
residential systems (0.5 psig or less). Higher pressures apply to systems operating
above 0.5 psig. This test detects leaks without damaging appliance controls.
