Water level sensing switch type – Pressure switches are fully enclosed, usually inside the pump body, making them immune to obstructions or floating debris in the sump basin.Three-phase power is typically not available in residential locations. Phase and voltage – Sump pumps powered from the AC mains are available with single-phase or three-phase induction motors, rated for 110–120, 220–240, or 460 volts.Power cord length – Running a more powerful electrical motor a long distance from the main service panel will require heavier gauge wiring to assure sufficient voltage at the motor for proper pump performance.For instance, a sump pump with a 15 feet (4.6 m) maximum head (also called a shutoff head) will raise water up 15 feet (4.6 m) before it completely loses flow. ![]() Head pressure – The hydraulic head pressure of a sump pump describes the maximum height that the pump will move water. ![]()
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