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Hot Tub electrics

Hot Tub Electrical installation Information

Electrical power supplies for a hot tub outdoors must be installed by a certified electrician or an approved electrical contractor.

The Hot Tub electrical installation must conform to the current BS:7671 18th edition of the electrical wiring regulations and all works must be certificated to part P of the building regulations of electrical requirements.

In the UK, a lot of, if not all domestic hot tubs are designed for 230v single phase AC supply

Finding out what power supply your Hot Tub needs

The hot tub electrics specification will have the required information for us to calculate the total load that it will need to operate safely.  We have the ability to work out what size of cabling that is needed. Even the smallest of hot tubs would normally require a minimum of a 13 amp supply. Larger hot tubs generally require a bigger feed like a 32 amp power supply both supplies will have to have RCD protection fitted.

If it must have its own dedicated power supply we will ensure the correct size MCB, the correct size cable, and have RCD protection fitted to comply with current electrical safety standards.

The small inflatable type of hot tub usually only needs a 13 amp plug socket but still, you're better off getting this checked by an electrician

What earthing system to use?

Depending on the location of where it is being installed the type of earthing system that will be used must be considered, the electrical power supply may need an earth rod or a pen fault detection device to be installed. By assessing the Hot tub electrics we will have the ability to recommend a safe suitable cost effective solution.

Mechanical protection for outside electrical installations

ALL 230V outside electrical installations need to have mechanical protection, this is either in the form of SWA (steel wire armoured cable) or appropriate metal conduit.

Isolation switch

Proelec electrical services Ltd will provide a waterproof outside rotary isolator switch around 2 meters away from the Hot Tub so that the power supply can be isolated quickly and effectively for emergency of maintenance.

We also leave a coil of cable beside the Hot Tub base so that we have enough length to wire it in whichever position you choose to site it.

If you’re looking for an electrician to install a suitable power supply, we’re here to help you get the job done. We offer electrical services in Newton-le-Willows, Merseyside, Warrington, Cheshire. And across Wigan, Greater Manchester areas. One of our friendly team of NICEIC accredited local electricians. You can contact us at 01925 222197 or drop us an email at


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