An RCD keeps tripping.
Please see attached photo of the board. I’ll call the breakers:
MCB (1) marked ‘Upstairs lighting’
MCB (2) marked ‘Sockets’
MCB (3) marked ‘Water heater’
MCB (4) marked ‘Sockets’
RCD (5)
MCB (6) marked ‘Kitchen sockets’
MCB (7) marked ‘Downstairs lighting’
MCB (8)...