Electrical Access Guide For Saunas

Electrical Requirements for Saunas

For saunas using a wood burning stove we recommend using a 13amp single or double socket to power the sauna lighting, located within two metres of the sauna.

For saunas using an electrical heater we recommend an independent RCD that only powers the sauna. A 40amp type B MCB must provide overcurrent protection. Cable size depends on the length of the run/route normally we tend to see 4-6mm cable. If your cable is to be ran externally we recommend a cable with mechanical and UV protection such as steel wired armoured cables or similar. You may also need an earth rod depending on your earthing system- this is down to your electrician to carry out a valid risk assessment. Finally, you will need an external isolator, we advise a 40-45amp rotary isolator with a IP67 rating as a minimum and no less than 2 meters away from the sauna positioning site. Leave 7M of unarmored cable, like HO7 cable, from the isolator, your electrician must connect this up into the isolator itself – we will connect the other end of the cable to the sauna heater. If your isolator is placed more than 2m away from the sauna location, add this to the 7m length of cable you leave for us. This must be safely isolated from the supply and left dead for us to perform the electrical connection onto the sauna.

Your electrician must provide an electrical installation certificate and notify local building control of the works carried out.

Any installations we see on installation that does not have valid electrical test certification may not be connected if we deem the installation unsafe.

The advice we give regarding electrical requirements is always given as advice and you should in every occasion consult an electrician to ensure regulations are complied with.

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