Hi guys new to this forum so sorry if i get anything wrong!
Just bought a medium side house and rewired some of the outbuildings.
To set the scene i have the main CU in the house which feeds:
A annex which is part of the house.
A log Cabin.
Two outbuildings with two CU units looped off one another.
and another two outbuildings with two CU units looped off one another.
I have wired it all up with the correct MCB's and the earths are all linked to the house.
First question is where do i place the RCD's. Do i put them in the main CU in the house or do i place them in each individual CU?
If in the house will one be ok for all the house and outbuildings? or do i split it between outbuildings and house? also what size RCD do i need?
If in each CU the ones that have been piggy backed can i just use one in the first one? also what size would this be?
Each outbuilding is only having lights and sockets with nothing major running off it. The log cabin does have a water heater.