Hot Tub Electrical Installation

Published: 24th May 2010
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Hot tub electrical installation is easy with the proper preparation. Based on the size of the tub, it may be a 120 Volt or 240 Volt unit. Smaller 120 Volt 20 A units can simply be plugged into a receptacle, where larger units will require full electrical installation. In this guide you will learn how to install a 240 Volt hot tub on an exterior slab with above ground wiring.

Materials Needed

* Hot Tub

* Spa Pack (GFCI protection panel)

* #6 THHN stranded copper wire

* Two Pole Fifty Amp Breaker (2P50)

* Color Coded Tape

* Schedule 80 PVC Conduit

* Electrical Tape

* Wire Caps

Step 1 - Placing the Hot Tub

Place the hot tub on a cement slab in the desired location. Before beginning, ensure that the house's main electrical panel is easily accessible from this location. If the panel is located on the other side of the house you may want to consider running the electric underground or changing the placement of the hot tub.

Step 2 - Preparing the Wires

Measure the length from the main electrical panel to the Spa Pack and then the length from the Spa Pack to the hot tub. Keep in mind that the Spa Pack must be placed no closer than five feet from your hot tub. You will need to be sure that it is still in the site of your unit. There can be no obstructions, such as fences or walls, preventing access to the Spa Pack. Once you have the measurement, add an additional two feet to it. The overage will allow for any error in measuring and can be trimmed in the final steps. Cut four pieces of the stranded copper wire that is labeled #6 THHN for each measurement. Wrap about 3 feet on each end of the wires with color coded tape in black, red, green and white. When you are done you should have one of each color for the length between the main panel and the spa pack, and also the length from the spa pack to the hot tub.

Step 3 - Running the Wire

Start with two pieces of Schedule 80 PVC conduit, one for each length of wire. Run the marked wires through the PVC conduit. Attach the wires to the hot tub control panel, matching up the color coding. Use electrical tape and wire caps to secure them. Run the other end of this set of wires to the Spa Pack, attaching the wires in the same manor. Do the same for the second set of wires, attaching them to the other side of the Spa Pack. At this point start filling your hot tub with water. Once you have the power going you will need to start the tub to heat the water and prepare the jets.

Step 4 - Installing the Breaker

Install the two pole fifty amp breaker in your main electric service panel. Follow manufacturer's direction for safe and correct installation. Attach the last set of wires to the breaker. Connect the green and white wires to the ground bar. Make sure that the black and red are connected to the actual breaker.

Step 5 - Starting the Hot Tub

Once the tub is filled with water, you will need to get the main breaker turned on to the Spa Pack and the hot tub. It may take several hours for the hot tub to heat up. Use this time to familiarize yourself with the features and operation of your hot tub. This site facilitate with home improvement,home repair,extreme home makeover,home improvement site,HGTV,DIY,do-it-yourself,buying guides,consumer reports ,Free home improvement advice, great remodeling tips, and appliance buying guides by leading home improvement authority, DIY expert and HGTV personality

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