I am extending an existing electrcial circuit in my house to a shed and garden. A registered electrician will be completing the work but I am tasked with buying the materials. The circuit will be fed from the existing house distribution board to an additional distribution board to feed the shed and garden sockets. The additional distribution board will be outside as a temporary measure until I build a brick garage at which point a permanent installation will be made and the distribution board moved inside. I believe the minimum I need for a board located outside is IP44, I am unable to find a metal unit with an IP44 or higher rating, they are all plastic. The oustide distribution board will have an isolator switch and an MCB to protect the shed/garden circuits. My question is do the current regs require all distribution boards to be metal or do they allow plastic when it is a downstream of the main house board or outside? Any other thoughts / input gratefully received?
