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how to fit new light switches onto unidentified cores.

Discussion in 'Electrics UK' started by Robert Hone, 9 Jul 2019.

  1. sparkwright

    sparkwright

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    To the op...

    Your picture needs to show where the wiring comes out of the box.

    We need to see which WIRES emerge from which CABLES, and where they go to at the switch itself.
     
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  3. markyd1

    markyd1

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    and take your finger off that switch.......
     
  4. ban-all-sheds

    ban-all-sheds

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    There is in the other box shown.
     
  5. ban-all-sheds

    ban-all-sheds

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    As per the other box shown, maybe it's connected to the back box.


    Earthing via the faceplate screws to the box is allowed.
     
  6. ban-all-sheds

    ban-all-sheds

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    You don't know that.
     
  7. ban-all-sheds

    ban-all-sheds

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    But as for the underlying question - it's the old Plan A/PlanB situation.

    Robert - you need to either learn how light switches are wired, how lighting circuits work and use a multimeter to identify which conductors are which, or get an electrician.

    Don't start experimenting with trial connections, even if encouraged to do so by others, and don't let decorators do electrical work in your house.
     
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  8. Risteard

    Risteard

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    No it isn't. It is allowed to earth the backbox through the screws. (Not in the south of Ireland, incidentally.)

    However it is absolutely not permitted to earth the faceplate through the screws.
     
  9. Risteard

    Risteard

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    Yes I do because it is a requirement that the cpc be terminated in the terminal on the accessory. I would also promote and endorse the running of a flylead to the backbox as correctly required by ET101 and RECI.
     
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  11. markyd1

    markyd1

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    At last...someone mentioning SAFETY
     
  12. Risteard

    Risteard

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    Safety's important, but he's fake news.
     
  13. SUNRAY

    SUNRAY

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    There will have been a short piece of red link wire.
     
  14. winston1

    winston1

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    But foreign regs don't apply in the UK.
     
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  15. Robert Hone

    Robert Hone

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    The lights switches are safe, fuse has been taped down.
    There was a short piece of red wire on the windowsill sunray
     

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  16. sparkwright

    sparkwright

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    Amazed you didn't mention the piece of red wire, though I guessed there would have been one.

    If you own a multimeter the wiring can be traced, but with the power OFF.

    At the box where the switch is missing, are some of the wires ends folded over, and some not?

    This info may give guidance where you can start testing (again, these tests would be with the power OFF).

    Are you able to do a simple continuity test with a multimeter? If not, it would save everyone's time if you employed an electrician.
     
  17. SUNRAY

    SUNRAY

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    Very important --- Add the earth wire to the front plate
    As one red wire is not doubled over and similar on one end of the link wire...
    Follow my suggestion only at your own risk
    This is what I would do but the first bit will be the earth wire:
    upload_2019-7-11_22-19-7.png
     
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