D D DIYnotBot 1 May 2012 This image is referenced in the forum thread 'both electric showers trip the rcd/isolator'
D D DIYnotBot 12 Jul 2012 This image is referenced in the forum thread 'Possible linked rings - or not'
D D DIYnotBot 17 Aug 2012 This image is referenced in the forum thread 'Sockets tripping at Consumer Unit'