Good morning guys, So I am doing a DYI project with my kitchen, and as part of that I want to replace my existing sockets and spurs with new ones. However I have a few questions before I do it so as not to damage anything. Do I have to earth the back boxes as well as put the earth wire in the face plates of the sockets? ( the plates are all plastic ones ). What about plastic back boxes for dry wall? Do I just run the earth cable into the face plate which is also plastic? Also, the spurs. How do I know which wire goes where as in where does the appliance go and where does the main electricity wire go?
With such basic questions, you really should get an electrician in as your knowledge/understanding appears to be very low.
Seems like a reasonable question to me - is't replacement of an existing switch or socket allowed (although I have a small doubt since a kitchen may be considered a "special location").
Everything is labelled. Your spurs as you call them (FCU's) will be labelled in and load with all terminals identified ie L, N, E, same with the sockets.
If the back box is plastic don't earth it if it's metal earth it. You need to earth every socket face wether it's plastic or metal. In a spur the feed in cable go to supply terminals, the terminals marked load go to the appliance or whatever it may be. Make sure the powers OFF before doing any if this.