Wisconsin (WI) JOURNEYMAN PLUMBER Restricted
Appliance Exam
SECTION 1: GENERAL PLUMBING & CODES (Q1–Q20)
1. What Wisconsin code governs plumbing installations including restricted appliance work?
A. SPS 381–387
B. NFPA 70
C. IPC 2018
D. UPC 2015
Answer: A
Rationale: SPS 381–387 are Wisconsin’s specific plumbing codes.
2. What is the minimum clearance required in front of a water heater for servicing?
A. 18 inches
B. 24 inches
C. 30 inches
D. 36 inches
Answer: C
Rationale: 30 inches is required to allow sufficient space for maintenance.
3. A restricted appliance plumber may work on which of the following?
A. Drainage systems
B. Gas-fired water heaters
C. Whole-house repiping
D. Roof drain systems
Answer: B
Rationale: The license limits work to appliances such as water heaters and related piping.
4. What organization certifies gas appliances?
A. OSHA
B. ASME
C. ANSI
D. CSA
Answer: C
Rationale: ANSI (American National Standards Institute) certifies appliances for safety.
5. What is the typical maximum developed length for a 1/2" gas pipe in residential systems (low
pressure)?
A. 20 feet
, B. 30 feet
C. 50 feet
D. 100 feet
Answer: C
Rationale: Depends on demand, but for many residential appliances 50 feet is a rough max at
low demand.
(Questions 6–20 continue on code rules, definitions, and limits)
SECTION 2: WATER HEATERS & APPLIANCES (Q21–Q40)
21. What is the purpose of a temperature and pressure relief valve on a water heater?
A. Prevent freezing
B. Reduce noise
C. Prevent tank explosion
D. Improve energy efficiency
Answer: C
Rationale: It prevents overpressure and temperature buildup.
22. The discharge pipe from a T&P valve must terminate:
A. In a bucket
B. No more than 6 inches above the floor
C. Into the sewer line
D. Above the water heater
Answer: B
Rationale: Code requires the discharge be no more than 6” from the floor to prevent injury.
23. A gas water heater located in a garage must have the burner ignition source how high above
the floor?
A. 12 inches
B. 18 inches
C. 24 inches
D. 36 inches
Answer: B
Rationale: Elevation helps prevent ignition of flammable vapors near the floor.
24. A sediment trap is required on a gas appliance to:
A. Prevent leaks
B. Catch moisture
C. Collect debris before it enters the appliance
D. Reduce gas pressure
Answer: C
Rationale: Prevents debris from clogging burner valves.
Appliance Exam
SECTION 1: GENERAL PLUMBING & CODES (Q1–Q20)
1. What Wisconsin code governs plumbing installations including restricted appliance work?
A. SPS 381–387
B. NFPA 70
C. IPC 2018
D. UPC 2015
Answer: A
Rationale: SPS 381–387 are Wisconsin’s specific plumbing codes.
2. What is the minimum clearance required in front of a water heater for servicing?
A. 18 inches
B. 24 inches
C. 30 inches
D. 36 inches
Answer: C
Rationale: 30 inches is required to allow sufficient space for maintenance.
3. A restricted appliance plumber may work on which of the following?
A. Drainage systems
B. Gas-fired water heaters
C. Whole-house repiping
D. Roof drain systems
Answer: B
Rationale: The license limits work to appliances such as water heaters and related piping.
4. What organization certifies gas appliances?
A. OSHA
B. ASME
C. ANSI
D. CSA
Answer: C
Rationale: ANSI (American National Standards Institute) certifies appliances for safety.
5. What is the typical maximum developed length for a 1/2" gas pipe in residential systems (low
pressure)?
A. 20 feet
, B. 30 feet
C. 50 feet
D. 100 feet
Answer: C
Rationale: Depends on demand, but for many residential appliances 50 feet is a rough max at
low demand.
(Questions 6–20 continue on code rules, definitions, and limits)
SECTION 2: WATER HEATERS & APPLIANCES (Q21–Q40)
21. What is the purpose of a temperature and pressure relief valve on a water heater?
A. Prevent freezing
B. Reduce noise
C. Prevent tank explosion
D. Improve energy efficiency
Answer: C
Rationale: It prevents overpressure and temperature buildup.
22. The discharge pipe from a T&P valve must terminate:
A. In a bucket
B. No more than 6 inches above the floor
C. Into the sewer line
D. Above the water heater
Answer: B
Rationale: Code requires the discharge be no more than 6” from the floor to prevent injury.
23. A gas water heater located in a garage must have the burner ignition source how high above
the floor?
A. 12 inches
B. 18 inches
C. 24 inches
D. 36 inches
Answer: B
Rationale: Elevation helps prevent ignition of flammable vapors near the floor.
24. A sediment trap is required on a gas appliance to:
A. Prevent leaks
B. Catch moisture
C. Collect debris before it enters the appliance
D. Reduce gas pressure
Answer: C
Rationale: Prevents debris from clogging burner valves.
