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Replacing a double socket

Discussion in 'Electrics UK' started by Vickie, 2 Apr 2020.

  1. Vickie

    Vickie

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    I need to replace this double socket, but the replacement is slightly different to the old one and not sure if I need to add a new earth cable going to the box please?

    Here is a picture of the existing socket that needs replacing:

    2020-04-02 09.10.06.jpg

    and here is the new socket:

    2020-04-02 09.42.03.jpg

    2020-04-02 09.43.25.jpg
     
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  3. terryplumb

    terryplumb

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    Just replicate what you already have. I.E. three earth conductors into one of the new sockets earth terminals.
     
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  4. winston1

    winston1

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    The instructions say you do. The regs say if one of the back box lugs is fixed you don’t need to.

    Your choice.

    Yet another example of manufacturers instructions being wrong or perhaps incomplete.
     
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  5. Vickie

    Vickie

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    Many thanks @terryplumb and @winston1 So just to check, the earth is shared between the two sockets in the new one?
     
    Last edited: 2 Apr 2020
  6. terryplumb

    terryplumb

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    Yes ,Both earth terminals are linked together by a solid metal strip.
     
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  7. Harry Bloomfield

    Harry Bloomfield

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    Yes, just use either earth terminal, whichever is the easier to use for all three earth conductors. You could use both terminals, but I would avoid that - it would introduce another point of potential for failure.
     
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  8. Vickie

    Vickie

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    Thank you and sorry, I'm a bit confused when you say all three earth conductors as I only have two (first picture)? There's the earth coming out the main cable and then the other one that goes to the box. Should there be a third earth cable?
     
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  10. davelx

    davelx

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    Or to look at it another way - if you only use one terminal and it fails then you have no earth. If you use both (on a ring final) and one fails, then the other one is still connected. Using two terminals doubles the chance of a single failure, but that does not cause a potential danger, whereas the single failure using only one terminal does (you could even connect both terminals to the back box as well if you wanted to be ultra-cautious :) )
     
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  11. crystal ball

    crystal ball

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    The earth in the cable is actually two twisted together, looks like one in the same sleeve
     
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  12. EFLImpudence

    EFLImpudence

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    There is one from each cable, both in one of the green and yellow sleeves.
     
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  13. terryplumb

    terryplumb

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    You have 3 . One in each twin and earth cable ( put together in one green/ yellow) sheath. And a flying earth link to the galvanised box.
     
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  14. Vickie

    Vickie

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    Thanks all for your help, much appreciated!
     
  15. Harry Bloomfield

    Harry Bloomfield

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    That makes the three. Two in the cables in the wall, the third is the one to the metal back box.
     
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