Just picked up a hot tub which has a 3kw heater the hot tub will be outside, what I want to do is to take a separate supply from the house distribution board this is a Crabtree starbreaker split load with one side covered by a 63amp 30ma RCCB and there is a spare way for the MCB. The earth arrangement is PME and has been done recently
The idea is to take a length of SWA down the outside wall under a piece of decking and into the garage to a small DB which will then have a light circuit and a supply to the hot tub I guess the cable run is no more that 20metres from internal to garage DB
What I would like to know is what size MCB at the internal DB, what size SWA and should there be a local isolation to the hot tub ?
Thank you
The idea is to take a length of SWA down the outside wall under a piece of decking and into the garage to a small DB which will then have a light circuit and a supply to the hot tub I guess the cable run is no more that 20metres from internal to garage DB
What I would like to know is what size MCB at the internal DB, what size SWA and should there be a local isolation to the hot tub ?
Thank you