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Wiring a Water Well Pump Controller and Switch To wire up a pump in a water well is a relatively small project you can do yourself (assuming you are the homeowner and local codes allow for this). Many well drillers are not licensed and finding a licensed electrician can add unnecessary time and costs to the job. Here is a list of tools. If you need more pictures and information, check out the In-depth How-To. |
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The controller box needs to be mounted, typically near the pressure tank. The box is screwed to the wall as a surface mount. Choose an interior location, away from sunlight and not in a damp place, such as a well pit. |  |
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You will need to run power from the breaker box to the pressure switch using two-wire, plus ground. The switch is feed from the left and a three-wire cable leads to the controller box. Cut and strip the leads and attach to the switch. Check with local building codes and be sure that the power if off. |  |
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Run three-wire cable from the pressure switch to the controller that contains the starting relay and capacitors. Before you connect the wires, it is advisable to avoid corrosion by using an anti-oxidant on the wire including the ground wire. |
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The cable from the pump typically has four strands and is cased in a heavy shielding. Typical wire strippers will not work and though not very elegant you can use a knife to carefully cut back and remove the shielding. You can then pull and expose the wire. |
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Attached connectors to the box and staple the cables Cable stapes for pump wire are much wider than normal staples. Attach the wires as per diagram, again using anti-oxidant. |
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