Plumber Red Seal · Question
During the final inspection of a new residential shower installation, you observe that the shower head's flow rate significantly exceeds the maximum permitted by the National Plumbing Code of Canada (NPC). The NPC specifies a maximum flow rate for shower heads at a given pressure. What is the typical maximum flow rate for shower heads in residential applications, as per NPC?
The National Plumbing Code of Canada (NPC) limits the maximum flow rate for shower heads in residential applications to 9.5 L/min (2.5 US gpm) at 550 kPa (80 ps
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Question: During the final inspection of a new residential shower installation, you observe that the shower head's flow rate significantly exceeds the maximum permitted by the National Plumbing Code of Canada (NPC). The NPC specifies a maximum flow rate for shower heads at a given pressure. What is the typical maximum flow rate for shower heads in residential applications, as per NPC?
Answer options:
- 7.6 L/min ✅ 9.5 L/min
- 12.0 L/min
- 15.0 L/min
Correct answer: 9.5 L/min
Explanation: The National Plumbing Code of Canada (NPC) limits the maximum flow rate for shower heads in residential applications to 9.5 L/min (2.5 US gpm) at 550 kPa (80 psi) to promote water conservation. Flow rates higher than this would indicate non-compliance and less efficient water usage.
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