Fixtures & Water HeatersQuestion 182 of 360
The drain line from a water heater pan must be at least what pipe size?
a.3/4 inch
b.1/2 inch
c.1-1/2 inches
d.2 inches
Explanation
The pan drain must be piped with a minimum 3/4-inch pipe run by gravity to an approved discharge point. A smaller line could clog or fail to carry the leak. The drain must be independent and terminate where the discharge is readily observed.
Law Reference: 2022 California Plumbing Code (CPC) §507.5Practice all 360 questions free — no signup required.
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