Just to say about the diagram in the above post with some saying it is a junction box and some saying a ceiling rose one thing I can say it is probably by no way a new diagram only an altered version of an old one.
At home I have a Readers Digest Repair Manual from 1976 first published 1972 with an identical diagram labelling it as a rose labelled loop in wiring. Only alterations been the labelling font is different, the CPC in my book is just green and the switched Live is also coloured red. Everything else is exactly the same.
At home I have a Readers Digest Repair Manual from 1976 first published 1972 with an identical diagram labelling it as a rose labelled loop in wiring. Only alterations been the labelling font is different, the CPC in my book is just green and the switched Live is also coloured red. Everything else is exactly the same.