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IP65 garage light switch: Sealing the cable entry points

Discussion in 'Electrics UK' started by mike004, 8 Oct 2020.

  1. mike004

    mike004

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    My garage roof now leaks a bit in heavy rain. So I have bought this type of IP65 external switch to replace the existing standard internal fused light switch in my garage.
    https://www.screwfix.com/p/british-...y-weatherproof-outdoor-switch-with-neon/54649
    Should have bought the 1-way version really, but it seems I can easily convert it.

    A couple of questions:
    - I will remove the circular punchouts at the top and bottom of the mounting box. How do I then seal the mounting box? This an obvious place for water ingress, and the holes look rather large.
    - The switch does not seem to have a fuse. Is this a common design for external switches -- the mains unit trips instead?
     
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  3. crystal ball

    crystal ball

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  4. mike004

    mike004

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    Thanks, I can see how that would be a good seal.
    I expected something like this to be supplied with the product...
     
  5. EFLImpudence

    EFLImpudence

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    It doesn't matter. The other way round would.

    Why? Just use the bottom ones.

    You have bought one that does not have a fuse.
     
  6. JohnD

    JohnD

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    ...because water may drip down the cable, and get into the box.

    The electrician's "drip loop" prevents this.
     
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  8. EFLImpudence

    EFLImpudence

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  9. securespark

    securespark

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    Why does it matter?

    Why are you always nit-picking?

    I would hazard a guess that EFLI picked a place most people live near and a brand that is half the price of MK. It happens to have a neon, so what?
     
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  10. EFLImpudence

    EFLImpudence

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    I just picked the first equivalent of the OP's on the same site - with a fuse.
     
  11. mike004

    mike004

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    Just bought a pair of M20 grommets from wickes.
    The cable seals are missing!
    Would a few winds of insulation tape suffice to give a decent seal?

    EDIT: Found it. It was black rubber ring lodged in the top nut. Nothing like the diagram in the instructions.
     
    Last edited: 9 Oct 2020
  12. mike004

    mike004

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    Re: Neon. All stock at wickes had neon.
    You can configure the neon operation:
    - Neon always ON when power is ON (called Power mode)
    - Neon only ON when switch is ON (called Switch mode)
    - Neon only ON when switch is OFF (called Locator mode, presumably for finding the switch in the dark)
     
  13. DIYnot Local

    DIYnot Local

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