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Pool Pump Electrical Connections

The first thing to determine when installing a new pool pump and encountering a problem is that the problem will either be plumbing related, electricity related or potentially a problem with the pool pump itself. The least likely scenario is that the brand new pool pump is defective. It is possible for this to happen however this would be the most uncommon pool pump problem to have as quality control typically will catch a defective pump before it leaves the manufacturing plant.

Pool Pump Wiring

Wiring of a pool pump is more complicated than it would appear in may cases. The wiring diagrams are not labelled clearly to the average home owner, where as the average electrician would easily be able to discern the correct wiring orientation in most cases. This is a liability issue for the manufacturer and if you are having trouble hooking up your pool pump electrically they will likely tell you to contact a licensed electrician to complete the installation for you.



While this is the best advice you can receive if you are unsure of how to hook up the wires for your pool pump, here are a few common mistakes that people make with electrical when installing pool pumps.


110 / 220 Volt Pump Connections

Many pool pumps are available for either 110V or 220V connections. The pumps that have this choice of voltage will typically come pre-set from the manufacturer for 220 volts. This is because if you apply 110V to a 220V connection, essentially nothing will happen. It is possible however to damage the pump if you provide 220V power to a pump set up for 110V. It is for this reason that pumps come set up for 220V as this allows you to make a mistake on the voltage supply to your pump without buring out the pump as soon as you turn the breaker on.

The symptoms of a pump that has the wrong voltage applied to it will depend on whether the pump is set up for 110 oor 220. When a pump is configured for 220 volt power and you provide only 110V then one of two things will happen. One possibility is that the pump will hum but not start, or the pump will start but run slowly or stop as soon as it begins priming and moving water. Running your pump for prolonged periods with the wrong voltage applied can cause damage to the motor so be sure to double check your voltage supply before running the pump.


Changing 110 & 220 Volt Connections

Applying 220V to a pump that is configured for 110V can cause permanent damage to the motor. This scenario would likely result is sparking, arching or smoke coming from the motor followed shortly by the breaker supply for the circuit tripping out.



To change between 110V and 220V settings on a pump you would typically change the positioning of an electrical jumper in the motor. Information about if your pump has a jumper and how to change the voltage selection with the jumper will be available in the owners manual for your pump or from the dealer that you have purchased from.


Proceed to the next section on Pool Pump Plumbing connections.




Pump Fact

Static electricity charges can build up in an isolated system with plastic PVC plumbing and a running pool pump - Proper bonding of the pump is required for electrical safety