Hot Tub Cable Size

A 240v or a 120v hot tub will require different sizes of wires for optimum performance.

Hot tub cable size.

The recommended hot tub wire size is 6 awg copper. What cable should i use for a hot tub cable. Electrical cable for a hot tub 6 3 romex brand or uf cable cannot be run inside long lengths of one inch conduit. With the right gauge of wire your hot tub will heat up faster and it will also add to the life of the equipment that is.

Choosing the right gauge of hot tub wire can make all the difference in the performance of the hot tub as well as your power bills. 1 red 1 black hot 1 white neutral and 1 green ground wire in our example. Beginning at the lb fitting use fish tape to pull the wires from the fitting to the spa panel. Choosing the correct wire for a hot tub ensure a safe energy efficient usage and increase the lifespan of your equipment.

What cable should i use for a hot tub is a question we often get asked and when it comes to wiring your hot tub you have lots of cable options available to you depending on the environment and protection you might require. Leave at least 6 inches of extra wire hanging from the spa panel. During hot tub wiring copper wire is recommended with thhn thermoplastic nylon insulation. Wire size type for hot tubs after reviewing the spa owner s manual our electrician determined that our project needed 6 thhn stranded copper wire.

He used four individual insulated conductors. The recommended wire size is 6 awg copper. When in doubt consult a licensed electrician with experience hooking up hot tubs. How to wire a hot tub circuit.

They come in different sizes or gauges materials and colors that refer to their intended function. Electrical codes and details for spa and hot tub wiring. The wire size chart below shows allowable ampacities of insulated conductors rated up to and including 2000 volts 60 c through 90 c 140 f through 194 f not more than three current carrying conductors in raceway cable or earth directly buried based on ambient air temperature of 30 c 86 f. Power hook up to the hot tub must be single phase 240 volt 4 wire two hot one neutral one ground.

For a 32amp hot tub 6mm 3 core swa cable is needed and a 10mm 3 core swa cable is perfectly suitable for a 40amp hot tub. Wiring a hot tub 50 amp gfci circuit. Many hot tubs required a 4 wire circuit which has a separate neutral and separate ground along with the 2 conductors which provide the 240 volt circuit.