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.
Hot tub cable size.
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.
Wiring a hot tub 50 amp gfci circuit.
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.
Beginning at the lb fitting use fish tape to pull the wires from the fitting to the spa panel.
They come in different sizes or gauges materials and colors that refer to their intended function.
The recommended wire size is 6 awg copper.
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.
When in doubt consult a licensed electrician with experience hooking up hot tubs.
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.
Leave at least 6 inches of extra wire hanging from the spa panel.
Cable may be installed into a short length of conduit where it is used to stub up out of a trench or where emerging from a protected area such as a crawl space under a house.
What cable should i use for a hot tub cable.
How to wire a hot tub circuit.
He used four individual insulated conductors.
1 red 1 black hot 1 white neutral and 1 green ground wire in our example.
The recommended hot tub wire size is 6 awg copper.
An ip65 45amp rotary isolator switch is also recommended so that the hot tub can be isolated outdoors in an emergency or for service work.
For safety reasons a gfci is designed to automatically shut off power to the hot tub when a current leak or fault is detected.
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.
Power hook up to the hot tub must be single phase 240 volt 4 wire two hot one neutral one ground.
A 240v or a 120v hot tub will require different sizes of wires for optimum performance.
Choosing the correct wire for a hot tub ensure a safe energy efficient usage and increase the lifespan of your equipment.
During hot tub wiring copper wire is recommended with thhn thermoplastic nylon insulation.
