How to Wire a 110 Volt Pressure Switch

If your home has a water well, then you need a pressure switch that will allow the water to pump into the storage tank only within pressure ranges that you specify.
That way, water will pump when there isn’t enough water in the tank, and it will stop as soon as there is enough. Wiring a 110-volt pressure switch is actually straight forward for a reasonably handy do it yourselfer, provided that you take the proper safety precautions.

Step 1

Turn off the power to the circuit that feeds the pressure switch.

Step 2

Open the panel on the pressure switch to expose the black and white wires inside.

Step 3

Feed the incoming power cable from the house into the switch body and clamp it in place with the clamp inside.

Step 4

Strip the jacket of the cable back using the wire strippers to separate the three wires inside the cable.

Step 5

Strip 1 inch of insulation from each of the wires using the wire strippers.

Step 6

Twist the black wire around the black wire from the switch using a wire nut.

Step 7

Twist the white wire around the white wire from the switch, also using a wire nut.

Step 8

Wrap the bare copper ground wire from the cable onto the green screw located on the inside wall of the switch body. Tighten the screw with a screwdriver to secure it.

Step 9

Replace the front panel of the switch.

Step 10

Turn the power back on to the circuit.

Things You Will Need

  • Screwdriver
  • Wire strippers
  • Wire nuts

Warning

  • Be sure the power to your circuit is off before attempting to work with the live cable, or you could die of an electric shock.

About the Author

L.P. Klages is an entrepreneur and software developer, concentrating on information theory, software user experience, and mathematical modeling. He has been writing about technology and the business of technology since 1999. His articles have appeared on many sites, including GameDev.net, KenSharpe.net, and eHow. Klages attended Jacksonville University in Jacksonville, Fla.