How to Wire a Pressure Switch for a Water Pump | Hunker Without the use of the switch, the water pump would always be "on" or "off". However, with the pressure switch, the pump can be adjusted to turn "on" and "off" at predetermined settings to control the pump and subsequent pressure. By following a few basic procedures you can wire a Do it Yourself Wiring for a Square D Pressure Switch | Hunker OverviewIssuesSafetyUseOperationResultsIf you're trying to control pressure in an air compressor or a water pump, a Square D pressure switch is a common way to do so. A water pump pressure switch tends to operate at a lower pressure, while an air compressor operates at a higher pressure. Nonetheless, the wiring of any Square D pressure is broadly the same. A Square D pressure switch is what controls the pump. It will likely be mounted on the outside of your pressure tank. Over time, a Square D pressure switch can become worn out. An older pressure See more on hunker Well Pump Pressure Switch Wiring Diagram | Free Wiring Diagram Well Pump Pressure Switch Wiring Diagram - Collections Of Well Pump Pressure Switch Wiring Diagram Magnificent Model for Water. Wiring Diagram for Pressure Switch Refrence Well Pump Pressure. Wiring Diagram Well Pump Pressure Switch Archives Joescablecar. Wiring Diagram for Pressure Switch Best Poe Wiring Diagram Unique. How to Wire a Well Pressure Switch | eHow Wiring electrical devices requires a certain amount of experience, but with proper preparation, the novice can successfully perform simple wiring tasks. Observing a few basic steps and following proper safety practices are the basics for wiring most home equipment.