How to Wire a Whirlpool Tub

Updated July 20, 2017

Installing a new Whirlpool tub will give you years of enjoyment. Many different designs allow you to replace an existing tub or fit a tub into a new area. Most Whirlpool models use two separate 15 amp circuits for proper operation. One circuit is used for the pump and the other for an optional heating element. Electrical wiring and connecting should be performed by a qualified electrician. Follow local building codes when installing a new tub.

Locate the breaker box. Find two empty slots to install the new GFCI breakers for the tub. GFCI breakers prevent accidental electrocution by continuously monitoring the electricity flowing through the circuit and quickly shutting it off if there are any changes.

Locate the main power supply switch and turn it off. Open the cover on the breaker panel using a flat screwdriver. Install the new breakers by sliding them in and seating them into the mounting slots on the panel with your fingers.

Run the 14-gauge two-conductor cable from the breaker panel to the Whirlpool tub. Install two separate cables, one for the pump and the other for the heating element.

Remove 3/8 inch of the insulation from the ends of the electrical wires at the panel with a set of wire strippers. Connect the wires to both circuit breakers and grounding bar with a flat screwdriver. Follow the instructions with the breaker to install it properly. Replace the cover over the panel.

Strip 3/8 inch of the insulation from the ends of the electrical wires at the tub. Remove the cover over the electrical connection box and feed the cable through the side of it. Connect one set of wires to the pump and the other set to the heater electrical connections. Twist the wires together and screw wire nuts over the ends. Connect the bare copper ground wire to the grounding screw. It will be marked with a green colour. Replace the cover.

Connect a #8 solid copper ground wire to the pump motor with a flat screwdriver. There will be a terminal connection on it. Connect the other end of the wire to any metallic part found on the tub assembly.

Turn on the main power and the breakers, fill the tub, and test it.


12-gauge two-conductor cable may also be used for the electrical connections.


Do not attempt this unless you are experienced and licensed to perform electrical work. Always follow local building codes.

Things You'll Need

  • 2 ground fault circuit interrupter (GFCI) breakers
  • 14-gauge two-conductor electrical wire with ground
  • Flat screwdriver
  • Wire strippers
  • Wire nuts
  • #8 solid copper wire
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