How to Wire a Circulator Pump

Remove the screws holding the terminal cover in place using a suitable screwdriver. Notice a round hole in the cover. This is to put the cable through.

Feed the end of the cable that connects to the circulator pump through the hole in the terminal cover. Move it up the cable so it's out of the way. If no cable is already connected to the electrical supply and ready to wire to the pump, use non-metallic 14-2 gauge cable.

Remove about 3 inches of the non-metallic cover from the end of the cable using wire strippers or a knife and long-nosed pliers to expose the three wires inside.

Remove just over a 1/4-inch of the colored plastic from the end of the exposed wires using wire strippers so you can see the copper wire inside. Twist the exposed copper wires using your fingers or a pair of long-nosed pliers to stop the strands from splitting.

Loosen, but do not remove, the three screws on the circulator pump terminals using a suitably sized screwdriver. Use your fingers to pull the metal washers that are under the screwhead toward the screwheads so you can feed the wire under the washer.

Slide the exposed metal wire on the end the green stripped wire under the washer of the ground terminal. Hold the wire in place, and tighten the screw. Ensure the wire is held secure by gently pulling it using your fingers.

Slide the exposed metal wire on the end the negative wire under the washer of the negative terminal. Hold the wire in place, and tighten the screw. Ensure the wire is held secure by gently pulling it.

Slide the exposed metal wire on the end of the positive wire under the washer of the positive terminal. Hold the wire in place, and tighten the screw. Ensure the wire is held secure by gently pulling it.

Slide the cover down the cable and place on the circulator pump. Insert the screws and tighten using a screwdriver. Turn on the electricity if the opposite end of the cable is already wired to the electrical supply or wire a plug to the end of the cable so you can connect the pump to the main's electricity.