Core TradesQuestion 29 of 700
When strapping a tank-type water heater against seismic movement, the lower strap must be placed at least how far above the water heater's controls (thermostat/burner)?
a.1 inch
b.2 inches
c.3 inches
d.4 inches
Explanation
The lower seismic strap must sit within the bottom third of the tank but at least 4 inches above the controls so it does not interfere with the thermostat or burner. Smaller clearances risk contacting the control area.
Law Reference: 2025 CA Plumbing Code (CPC) §507 (Water Heaters)Practice all 700 questions free — no signup required.
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