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2 way switch, 2 circuits, arced neutral

Discussion in 'Electrics UK' started by Beneop, 15 Jun 2020.

  1. Beneop

    Beneop

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    Hi all,
    I have just moved into a house and went to use the light switch last night, it buzzed then shorted. Took the switch off this morning and there looks to have been an arc across to neutral(?)

    This switch has 2 feeds, looking at it the right switch controls the downstairs hall, the left switch is a 2 way to control the landing.
    There are a few cables, it was a blue with red band that seems to have arced, this was connected to the top L3 point, my question is, is the wiring ok? I mean the hallway switch worked fine as I've used that before now, secondly, where is the blue wire meant to go so the 2 way works properly.

    Hopefully the photos will help.
    Thanks

    20200615_103012~2.jpg 20200615_103416.jpg 20200615_103050.jpg 20200615_104225.jpg
     
    Last edited: 15 Jun 2020
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  3. winston1

    winston1

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    It goes in one of the L3s. But as we don’t know which terminals belong to which switch from your diagram I can’t say which L3.
     
  4. Beneop

    Beneop

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    15922173046568197949064943968162.jpg 15922173046568197949064943968162.jpg 15922171696169199937942111464718.jpg Thanks for the reply.
    New photo attached.

    This is an old switch, l1,l2,l3, no com. Should the yellow not be in l1?
     
  5. winston1

    winston1

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    It goes in the L3 which is burnt. But you may need a new switch. There is no reason for the yellow wire to be wrong if you have not touched it.
     
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  6. Beneop

    Beneop

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    Thank, just put the blue into L3 on that section. Works fine.
    Seems to have arced as the exposed wire was too long/not fully in as opposed to my thinking it was connected incorrectly.

    Appreciate the help
     
  7. Taylortwocities

    Taylortwocities

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    You still should replace the switch.
    Oh and before anybody else mentions it
    There are no neutrals in that switch. just because a wire is blue doesn’t make it a neutral. See that red sleeve on the wire? That tells you that the wire can be live.
     
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  9. DetlefSchmitz

    DetlefSchmitz

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    But don't you admire Winston for not pointing that out?
     
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  10. Taylortwocities

    Taylortwocities

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    Sorry, my admire facility is broken. Can’t get a new one cos the shop’s closed:sneaky:
     
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  11. DetlefSchmitz

    DetlefSchmitz

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  12. JohnW2

    JohnW2

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    It might now be open again, as of today :)

    Kind Regards, John
     
  13. SUNRAY

    SUNRAY

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    Indeed... But in the circumstances, which is offering appropriate and good advice, it would have been a fair comment to mention it's not a neutral.

    AND a thankyou to Beneop for the pictures, making drawings and the feedback.

    Yes it really is a good idea to replace the switch having had such an incident.
     
  14. DIYnot Local

    DIYnot Local

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