Turn off all the power to the pump at the breaker box before starting to wire the pool pump. Use a multimeter to measure the voltage on the wires going to the pool pump and identify if it is 230 volts or 115 volts. To find the electrical connectors, remove the back cover of the motor by unscrewing the two screws using a screwdriver.
Screw a metal elbow into the pool pump at one end of the motor, and pass the three wires through the conduit and metal elbow into the end of the motor. Check the pool pump manual for the correct size of the wire, and make sure that it is correct for the horsepower rating and distance from the power source. For motors up to 1 horsepower, a size 14 American wire gauge wire is usually used, while for larger motors with more power and voltage, wire size runs between 10 and 14 AWG.
If the voltage on the wires is 230 volts, the three wires are red, black and green. The wires are colored black, white and green if the voltage is 115 volts. The green wire should be attached to the ground. The pool pump must also be connected in accordance with the local electrical code requirements. Use a solid copper wire that is 8 AWG or larger, and use it to connect the reinforcing rod to the pressure wire connector provided on the motor housing.