Wisconsin (WI) PLUMBING LEARNER RESTRICTED
APPLIANCE Exam
Question 1. Which of the following best defines a restricted appliance under Wisconsin plumbing code?
A) Any device used exclusively for heating water in commercial buildings
B) A plumbing fixture that requires a special license to install or repair
C) An appliance connected directly to potable water supply that has specific installation and safety
requirements
D) Any appliance installed outside of a building’s foundation
Answer: C
Explanation: A restricted appliance in Wisconsin refers to devices like water heaters that connect
directly to the potable water supply and have specific installation, safety, and code requirements to
ensure safe operation.
Question 2. What is a primary requirement for a plumbing learner working under direct supervision on
restricted appliance installation?
A) They may work without supervision after completing a course
B) They must be under the direct supervision of a licensed master plumber restricted appliance
C) They can only assist but not perform any installation tasks
D) They are not permitted to work on restricted appliances
Answer: B
Explanation: Plumbing learners must work under the direct supervision of a licensed master plumber
restricted appliance, ensuring work complies with code and safety standards.
Question 3. Which Wisconsin statute governs licensing requirements for plumbing learners?
A) Wis. Stat. § 145
B) Wis. Stat. § 106
C) Wis. Stat. § 454.01
D) Wis. Stat. § 381
Answer: A
, Wisconsin (WI) PLUMBING LEARNER RESTRICTED
APPLIANCE Exam
Explanation: Wis. Stat. § 145 covers licensing, registration, and regulation of plumbing practitioners,
including learners, in Wisconsin.
Question 4. When is a permit required for installing a new water heater in Wisconsin?
A) Only if the water heater is electric
B) Always, regardless of size or type
C) Only if the water heater exceeds a specific capacity or involves new connections
D) Permits are not required for water heater replacement
Answer: C
Explanation: Permits are generally required when installing new water heaters that exceed certain sizes
or involve new water or gas connections, to ensure code compliance and safety.
Question 5. Which material is considered acceptable for water distribution piping in restricted appliance
installations under SPS 382?
A) Galvanized steel only
B) Copper, CPVC, or PEX
C) Lead piping
D) Cast iron exclusively
Answer: B
Explanation: Acceptable materials include copper, CPVC, and PEX, which are approved for water
distribution systems due to their safety and durability.
Question 6. What is the purpose of a backflow prevention device in a water heater system?
A) To prevent water from flowing out of the appliance
B) To prevent contaminated water from entering the potable water supply
C) To regulate pressure within the water heater
D) To improve energy efficiency
, Wisconsin (WI) PLUMBING LEARNER RESTRICTED
APPLIANCE Exam
Answer: B
Explanation: Backflow preventers prevent contaminated water from siphoning back into the potable
water supply, protecting public health.
Question 7. What is the minimum required pressure for water supply piping in Wisconsin plumbing
code?
A) 20 psi
B) 50 psi
C) 100 psi
D) 150 psi
Answer: B
Explanation: Typically, a minimum of 50 psi is required to ensure adequate water pressure for fixtures
and appliances.
Question 8. Which of the following is prohibited when connecting a water heater to a potable water
system?
A) Using approved copper piping
B) Using lead-based fittings
C) Installing an appropriate pressure relief valve
D) Connecting to a properly vented system
Answer: B
Explanation: Lead-based fittings are prohibited due to health risks associated with lead leaching into
drinking water.
Question 9. In drain, waste, and vent (DWV) systems, what is the purpose of a trap?
A) To prevent sewer gases from entering the building
B) To increase water flow velocity
C) To connect multiple drains
, Wisconsin (WI) PLUMBING LEARNER RESTRICTED
APPLIANCE Exam
D) To support pipe insulation
Answer: A
Explanation: Traps prevent sewer gases from escaping into living spaces by sealing the pipe with water.
Question 10. Which venting requirement must be met for water treatment device waste connections?
A) They must be vented separately from the DWV system
B) They do not require venting if the waste is small
C) They must be vented through the roof with a dedicated vent pipe
D) They require no venting if connected indirectly
Answer: A
Explanation: Water treatment device waste lines must be vented separately or properly connected to
ensure proper drainage and prevent siphoning.
Question 11. What is the primary purpose of a cross-connection control device?
A) To allow water to flow in both directions freely
B) To prevent backflow from non-potable to potable water systems
C) To increase water pressure
D) To filter debris from the water
Answer: B
Explanation: Cross-connection control devices prevent backflow contamination, protecting the potable
water supply from pollutants.
Question 12. Which safety practice is essential when working with gas water heaters?
A) Ignoring ventilation requirements
B) Using unapproved tools for gas leaks
C) Performing leak tests after connections are made
APPLIANCE Exam
Question 1. Which of the following best defines a restricted appliance under Wisconsin plumbing code?
A) Any device used exclusively for heating water in commercial buildings
B) A plumbing fixture that requires a special license to install or repair
C) An appliance connected directly to potable water supply that has specific installation and safety
requirements
D) Any appliance installed outside of a building’s foundation
Answer: C
Explanation: A restricted appliance in Wisconsin refers to devices like water heaters that connect
directly to the potable water supply and have specific installation, safety, and code requirements to
ensure safe operation.
Question 2. What is a primary requirement for a plumbing learner working under direct supervision on
restricted appliance installation?
A) They may work without supervision after completing a course
B) They must be under the direct supervision of a licensed master plumber restricted appliance
C) They can only assist but not perform any installation tasks
D) They are not permitted to work on restricted appliances
Answer: B
Explanation: Plumbing learners must work under the direct supervision of a licensed master plumber
restricted appliance, ensuring work complies with code and safety standards.
Question 3. Which Wisconsin statute governs licensing requirements for plumbing learners?
A) Wis. Stat. § 145
B) Wis. Stat. § 106
C) Wis. Stat. § 454.01
D) Wis. Stat. § 381
Answer: A
, Wisconsin (WI) PLUMBING LEARNER RESTRICTED
APPLIANCE Exam
Explanation: Wis. Stat. § 145 covers licensing, registration, and regulation of plumbing practitioners,
including learners, in Wisconsin.
Question 4. When is a permit required for installing a new water heater in Wisconsin?
A) Only if the water heater is electric
B) Always, regardless of size or type
C) Only if the water heater exceeds a specific capacity or involves new connections
D) Permits are not required for water heater replacement
Answer: C
Explanation: Permits are generally required when installing new water heaters that exceed certain sizes
or involve new water or gas connections, to ensure code compliance and safety.
Question 5. Which material is considered acceptable for water distribution piping in restricted appliance
installations under SPS 382?
A) Galvanized steel only
B) Copper, CPVC, or PEX
C) Lead piping
D) Cast iron exclusively
Answer: B
Explanation: Acceptable materials include copper, CPVC, and PEX, which are approved for water
distribution systems due to their safety and durability.
Question 6. What is the purpose of a backflow prevention device in a water heater system?
A) To prevent water from flowing out of the appliance
B) To prevent contaminated water from entering the potable water supply
C) To regulate pressure within the water heater
D) To improve energy efficiency
, Wisconsin (WI) PLUMBING LEARNER RESTRICTED
APPLIANCE Exam
Answer: B
Explanation: Backflow preventers prevent contaminated water from siphoning back into the potable
water supply, protecting public health.
Question 7. What is the minimum required pressure for water supply piping in Wisconsin plumbing
code?
A) 20 psi
B) 50 psi
C) 100 psi
D) 150 psi
Answer: B
Explanation: Typically, a minimum of 50 psi is required to ensure adequate water pressure for fixtures
and appliances.
Question 8. Which of the following is prohibited when connecting a water heater to a potable water
system?
A) Using approved copper piping
B) Using lead-based fittings
C) Installing an appropriate pressure relief valve
D) Connecting to a properly vented system
Answer: B
Explanation: Lead-based fittings are prohibited due to health risks associated with lead leaching into
drinking water.
Question 9. In drain, waste, and vent (DWV) systems, what is the purpose of a trap?
A) To prevent sewer gases from entering the building
B) To increase water flow velocity
C) To connect multiple drains
, Wisconsin (WI) PLUMBING LEARNER RESTRICTED
APPLIANCE Exam
D) To support pipe insulation
Answer: A
Explanation: Traps prevent sewer gases from escaping into living spaces by sealing the pipe with water.
Question 10. Which venting requirement must be met for water treatment device waste connections?
A) They must be vented separately from the DWV system
B) They do not require venting if the waste is small
C) They must be vented through the roof with a dedicated vent pipe
D) They require no venting if connected indirectly
Answer: A
Explanation: Water treatment device waste lines must be vented separately or properly connected to
ensure proper drainage and prevent siphoning.
Question 11. What is the primary purpose of a cross-connection control device?
A) To allow water to flow in both directions freely
B) To prevent backflow from non-potable to potable water systems
C) To increase water pressure
D) To filter debris from the water
Answer: B
Explanation: Cross-connection control devices prevent backflow contamination, protecting the potable
water supply from pollutants.
Question 12. Which safety practice is essential when working with gas water heaters?
A) Ignoring ventilation requirements
B) Using unapproved tools for gas leaks
C) Performing leak tests after connections are made
