Hi guys I have a question on installing an outside supply to a spa at home. I have a few questions regarding this one is the consumer unit has no spare ways have checked maximum demand and all seems okay for an additional 32 amp load. My plan was to get a garage style CU and take out out of the 6 amp lighting circuit breakers at the main board and replace with a 40amp breaker to feed the new CU containing the lighting circuit and swim spa circuits. I’m then planning on running a 6mm swa outside to a rotary isolator.
first question is does the new CU require surge protection? (I know this will have to be signed off by someone who is registered as I’m not registered)
Does the lighting circuit require an installation certificate as well? I’m presuming it will as I’m installing it in a new board.
and lastly (I know there is many debates about this) but what are your guys thoughts on TNCS supplies and earth electrodes? I’ve been told by the manufacturer they’ve never heard of any electrician ask about using an earth electrode?
thank you for your replies in advance
