If the fusebox in your home has RCD protection you don't need a second RCD for your hot tub
Answered by Farrah, Electrical Safety Expert
If the fusebox in your home has RCD protection you don't need a second RCD for your hot tub. Make sure that you are using a registered electrician to install the hot tub, that means that you have the peace of mind that the work is compliant with the latest regulations and standards.
They will be able to advise you in more detail if you have any concerns.