Any electrical supply for a hot tub outdoors should be installed by a competent, certified electrician.
All works must be certificated to part P of the building regs. Electrical installation work should always conform to BS:7671 17th edition of the wiring regulations.
Before installing a hot tub or swim spa, it is necessary to have your electrical supply fitted. You will require a 13, 32 or 40 amp supply (check with your supplier for the requirements for a swim spa) depending on which model you have purchased. Hot tubs or swim spas need to have their own circuit from the main distribution board; the supply should not be shared.
Before your hot tub arrives, please arrange for a qualified electrician to do the following:
32 or 40 amp supply
Add 32 or 40 amp Type C breaker to the consumer unit. (see image 1)
From the main consumer unit, run a 6mm, 3 Core Armoured Cable to the Rotary Isolator Switch. (see image 2)
Rotary Isolator Switch should be 2-5m from the hot tub. Install the earth rod (see image 3a)
Another 6mm, 3 Core Armoured Cable must
be connected to the Rotary Isolator Switch with a minimum of 10m worth of cable left in a loop. Our delivery team are qualified to connect this cable to the inside of the hot tub. However, they will NOT hardwire your hot tub to the mains supply. (see image 3b)
Your electrician should leave enough spare cable attached to the isolator to reach the side panel where the control panel is.
A Part P certificate should be supplied by your electrician. This is to confirm that the electrical work is in line with government regulations. This paperwork must be kept on file and presented when requested.
13 amp supply
Our 13 amp hot tubs do not come with a cable or plug. These will need to be sourced and supplied by you.
The hot tub needs to have its own circuit from the main distribution board, the supply should not be shared.
Please arrange for an electrician to do the following before the delivery day:
Install a 16 amp outdoor waterproof commando socket with RCD protection. Install an earth rod (If required)
Provide a 2.5mm 3 Core Armoured Cable and 16amp commando plug with a minimum of 10m worth of cable left in a loop. Our delivery team are qualified to connect this cable to the inside of the hot tub. However, they will NOT hardwire your hot tub to the mains supply.
Ensure the outdoor socket is within 2-5m from the hot tub.
Our 13amp hot tubs potentially could be installed with a 13amp plug into a standard socket. This would need to be a dedicated supply from your main distribution board and we recommend you consult with your electrician to ensure this is suitable. However our recommendation is that you install the 16amp commando socket to avoid any future problems
The relevant steps must be completed before we deliver your hot tub. Failure to do so will mean that we cannot install your hot tub.
For 13, 32 and 40 amp supply hot tubs we recommend your electrician installs an earth rod to ensure the earthing systems voltage is the same as the ground you are standing on. This will prevent the voltage traveling through you and any tingling.
Electrical Supply Diagram
This document is handy to print off and give to your electrician.