We are looking to get a 32A supply installed for a hot tub situated behind our garage (which already has an electricity supply). The spa electrics need to be protected via an RCD with C type breaker. It is recommended that it be earthed using a TT system. This needs to be fed via a suitable cable to an IPX5 rated isolator and needs to be padlocked off to avoid it being accidentally turned on. We are looking for the installation to be completed by the end of August.