Hot tub wiring can be done by people who are sure of their capabilities when dealing with electrical wiring, otherwise, a professional should do it. Dealing with electricity and water at the same time is a very dangerous combination. Hot tub wirings are really not that complicated to understand but then again, if you are in doubt, it is better to leave it to the experts. This way you will not be in danger of electrocuting yourself nor short-circuit your wiring system. Safety should always be your first concern when dealing with water and electrical wiring.
Step 1 – Consult a Local Inspector
Consult with you local building inspector. New hot tubs should be up to code. Your municipality might need a licensed electrician to wire your tub but sometimes only a permit is needed or perhaps someone should inspect it first prior to starting the project.
Step 2 – Check Service Panel
Check your service panel to see if it has sufficient capacity for the amperage requirement and open slots to accommodate your hot tub power requirements. Also check your hot tub for the electrical connection panel, which is typically located at the back cover bolted outside the hot tub unit.
Step 3 – Run Wiring
Run wiring to the hot tub from the service panel. It is important to run these wires thought a PVC or metal conduit. If the wires have to run inside the home it can run through the basement or crawl space. If outside the home, the wire should be buried underground especially if the tub is more than a couple of fee away from the house. To know the number of wires and gauge of wire will be indicated in the owner’s manual of your new hot tub.
Step 4 – Check the Slots
Check for the required two adjacent slots in the service panel and for the installation of the double pole breaker. The red and black wires, which are hot wires, will be the connection to the breaker and the ground while the neutral wires should connect to the ground bar.
Step 5 – Check the Line
Make sure the line from the service panel will connect to the “line in” connections indicated on the disconnect box. Another line will connect the “line out” connection going towards the hot tub. Depending on your hot tub model and make, a wiring diagram will be provided on how to wire your disconnect box.
Step 6 – Check the Control Panel
Look at the hot tub control panel. The hot wire and neutral wire will connect to the designated posts and the ground which is typically green in color will wire a connection to the grounding connection. Again, check the installation guide of your hot tub so you can identify the proper connections and where each wire should go.
Step 7 – Recheck Connections
Double-check all connections. Prior to turning on the power of your tub, have your work inspected by a licensed electrician or building inspector. Never power your hot tub until it is carefully and properly inspected.