What voltage is used by automated sprinkler systems?

What voltage is used by automated sprinkler systems?

• A. 240 Volts
• B. 277 Volts
• C. 120 Volts
• D. 24 Volts

Answer: (D)

Low-voltage control is standard for automated sprinkler systems. The valves in the field are solenoids that open when energized, and they’re designed to run on 24 volts alternating current. A transformer inside the controller steps down the building’s power (typically 120 VAC) to 24 VAC to energize those valve circuits. Using 24 volts keeps wiring simple, reduces cost, and improves safety. Higher voltages like 240 or 277 would require larger wiring and are used in other types of electrical installations, not irrigation valve operation. While the controller itself is usually powered from 120 VAC, it feeds the valves with 24 VAC, which is why 24 volts is the standard for automated sprinkler systems.

Low-voltage control is standard for automated sprinkler systems. The valves in the field are solenoids that open when energized, and they’re designed to run on 24 volts alternating current. A transformer inside the controller steps down the building’s power (typically 120 VAC) to 24 VAC to energize those valve circuits. Using 24 volts keeps wiring simple, reduces cost, and improves safety.

Higher voltages like 240 or 277 would require larger wiring and are used in other types of electrical installations, not irrigation valve operation. While the controller itself is usually powered from 120 VAC, it feeds the valves with 24 VAC, which is why 24 volts is the standard for automated sprinkler systems.