Gas Fitter Practice · Question
What is the maximum permissible operating pressure for a natural gas appliance in a residential setting before a pressure regulator is required at the appliance?
CSA B149.1-20 defines the maximum supply pressure to most residential appliances as 0.5 psig (3.5 kPa). Higher pressures require a regulator.
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Question: What is the maximum permissible operating pressure for a natural gas appliance in a residential setting before a pressure regulator is required at the appliance?
Answer options: ✅ 0.5 psig (3.5 kPa)
- 1.0 psig (7.0 kPa)
- 2.0 psig (14.0 kPa)
- 5.0 psig (35.0 kPa)
Correct answer: 0.5 psig (3.5 kPa)
Explanation: CSA B149.1-20 defines the maximum supply pressure to most residential appliances as 0.5 psig (3.5 kPa). Higher pressures require a regulator.
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