Plumber Red Seal · Question
Which of the following is NOT an acceptable material for a potable water distribution system inside a building under the NPC?
PVC pipe is generally used for drainage, waste, and vent (DWV) systems, not for potable water distribution inside a building due to its lower pressure rating an
Start free practice for Plumber Red Seal
177 questions · no signup required · 40 free questions per day
Question: Which of the following is NOT an acceptable material for a potable water distribution system inside a building under the NPC?
Answer options:
- Copper tubing (Type L or M)
- Cross-linked polyethylene (PEX) pipe ✅ Polyvinyl chloride (PVC) pipe
- Chlorinated polyvinyl chloride (CPVC) pipe
Correct answer: Polyvinyl chloride (PVC) pipe
Explanation: PVC pipe is generally used for drainage, waste, and vent (DWV) systems, not for potable water distribution inside a building due to its lower pressure rating and suitability for cold water only. PEX, copper, and CPVC are commonly accepted for potable water.
Start free practice for Plumber Red Seal
177 questions · no signup required · 40 free questions per day
More about Plumber Red Seal
Related Questions
- Before starting a new plumbing installation in a residential basement, what is the primary reason why a plumbe
- A plumber is installing a new kitchen sink in an existing residential dwelling. The sink drain is connected to
- A plumber is installing drainage for a dishwasher in a residential kitchen. The dishwasher P-trap is located 1
- A plumber is asked to install a backflow prevention assembly on a lawn irrigation system connected to the pota
- A plumber is considering the velocity of water in a 50 mm (2") copper pipe supplying a commercial building. Ex
- A plumber is designing the domestic hot water recirculation system for a multi-story residential building. Wha
More for Plumber Red Seal candidates
Practice tests
Question explanations
- Before starting a new plumbing installation in a residential basement, what is the primary reason why a plumbe
- A plumber is installing a new kitchen sink in an existing residential dwelling. The sink drain is connected to
- A plumber is installing drainage for a dishwasher in a residential kitchen. The dishwasher P-trap is located 1
- A plumber is asked to install a backflow prevention assembly on a lawn irrigation system connected to the pota
Ready to practice?
Free, no signup required. Build a wrong-question list as you go.
Start Free Plumber Red Seal Practice →Related courses
Other Canadian certifications candidates often prepare for alongside this one.