1. Visiting from the US? Why not try DIYnot.US instead? Click here to continue to DIYnot.US.
    Dismiss Notice

Plastic bit on pull cord switches is for insulation/saftey reasons?

Discussion in 'Electrics UK' started by eveares, 9 Aug 2020.

  1. eveares

    eveares

    Joined:
    28 Jul 2012
    Messages:
    1,292
    Thanks Received:
    45
    Location:
    Surrey
    Country:
    United Kingdom
    Just started watching the following video, where it is claimed that the plastic bit in the string of pull cord switches is for insulation purposes and thus is a safety device.

    I can understand this if true, although is new news to me. Any truth to this, have you heard this before, and is there a specific regulation in BS7671 what covers this in relation to pull cords?

    Video (6:08 into video):



    Regards: Elliott.
     
  2. Sponsored Links
  3. JohnW2

    JohnW2

    Joined:
    28 Jan 2011
    Messages:
    44,198
    Thanks Received:
    2,794
    Location:
    Buckinghamshire
    Country:
    United Kingdom
    Utter nonsense I would say!

    Kind Regards, John
     
    • Like Like x 3
  4. dannyboi2003

    dannyboi2003

    Joined:
    11 Jul 2006
    Messages:
    619
    Thanks Received:
    32
    Location:
    West Glamorgan
    Country:
    United Kingdom
    I always thought they were designed to be a deliberate weak point and break if a child got caught up in the cord?
     
  5. terryplumb

    terryplumb

    Joined:
    8 May 2017
    Messages:
    4,302
    Thanks Received:
    875
    Country:
    United Kingdom
    Plastic bit on a piece of string for insulation ...utter nonsense X 2
     
    • Like Like x 1
  6. SUNRAY

    SUNRAY

    Joined:
    28 Jul 2009
    Messages:
    3,219
    Thanks Received:
    201
    Location:
    Kent
    Country:
    United Kingdom
    Deffo an electrical insulator.

    Loads of steam makes the string wet and gets into the switch.

    They didn't used to be fitted and shock reports used to occur.

    Totally pukka.
     
    • Thanks Thanks x 1
    • Like Like x 1
  7. RF Lighting

    RF Lighting

    Joined:
    31 Mar 2006
    Messages:
    19,466
    Thanks Received:
    1,274
    Location:
    Leeds
    Country:
    United Kingdom
    I’ve stopped watching this guys videos. He gets me too wound up. He presents himself as the best and most knowledgeable sparks in the world, yet does average quality installs, and gets things wrong time and time again.
     
    • Like Like x 2
  8. SUNRAY

    SUNRAY

    Joined:
    28 Jul 2009
    Messages:
    3,219
    Thanks Received:
    201
    Location:
    Kent
    Country:
    United Kingdom
    I couldn't agree more.
    And the same is true for the others.

    It just highlights how the regs are not accurate enough to be instructions.
     
    • Like Like x 2
  9. RF Lighting

    RF Lighting

    Joined:
    31 Mar 2006
    Messages:
    19,466
    Thanks Received:
    1,274
    Location:
    Leeds
    Country:
    United Kingdom
    A recent one I watched. “The gas doesn’t need bonding as it’s a plastic incommer” (sleeved steel pipe) and no mention of the old abandoned gas main which is still an extraneous conductive part.

    72818314-F0E3-4E72-B90E-719DD24E0317.jpeg
     
  10. Sponsored Links
  11. SUNRAY

    SUNRAY

    Joined:
    28 Jul 2009
    Messages:
    3,219
    Thanks Received:
    201
    Location:
    Kent
    Country:
    United Kingdom
    Nice.

    That reminds me:
    In 2 of my flats the annual gas check lists earth bond as 'missing or incorrectly fitted'. with both the bond is after the first tee...

    Because the same fitter installed a new tee so close to the meter there is no space for it before.

    But of course the good tenants read their copy and panic. I have sent reports and pics to gas safe but it made no difference.
     
  12. SUNRAY

    SUNRAY

    Joined:
    28 Jul 2009
    Messages:
    3,219
    Thanks Received:
    201
    Location:
    Kent
    Country:
    United Kingdom
    The video was still playing at the ceiling rose bit.

    I've not come across those, how common are/were they?
     
  13. RF Lighting

    RF Lighting

    Joined:
    31 Mar 2006
    Messages:
    19,466
    Thanks Received:
    1,274
    Location:
    Leeds
    Country:
    United Kingdom

    I’ve just reread the regulation, and it’s a strange one.

    E879AA63-A73B-4C9F-A00E-8847B8C7D432.jpeg

    It seems to be saying that the 600mm rule should be applied where possible but common sense may be applied if site conditions dictate, but the connection must be before the tee with no exceptions.

    I have also seen gas meters where a tee is soldered directly to the meter union. For me a connection just past the tee but still at the meter is no problem at all. Maybe this is where the regs prove they can not possibly cover every single real world scenario.
     
  14. EFLImpudence

    EFLImpudence

    Joined:
    7 Jul 2010
    Messages:
    33,488
    Thanks Received:
    3,651
    Location:
    Retired to:
    Country:
    Portugal
    We've discussed this many times.

    Electrically, the regulation is WRONG.
     
    • Like Like x 1
  15. SUNRAY

    SUNRAY

    Joined:
    28 Jul 2009
    Messages:
    3,219
    Thanks Received:
    201
    Location:
    Kent
    Country:
    United Kingdom
    Yes that's the situation, one has the tee directly on the union and the other has an elbow directly on the union and the tee.

    My agent doesn't understand so it's me gets to explain to the tenants.

    I have even photocopied and laminated the reg with a photo of the fitting for both properties and anotated which is part of the 'flat pack' left in the flat for the tenant.
     
    Last edited: 10 Aug 2020
  16. JohnW2

    JohnW2

    Joined:
    28 Jan 2011
    Messages:
    44,198
    Thanks Received:
    2,794
    Location:
    Buckinghamshire
    Country:
    United Kingdom
    Are you serious? :)

    If the switch were made properly, the 'pull cord' could be bare metal wire without presenting a safety hazard!

    Kind Regards, John
     
    • Like Like x 3
  17. SUNRAY

    SUNRAY

    Joined:
    28 Jul 2009
    Messages:
    3,219
    Thanks Received:
    201
    Location:
    Kent
    Country:
    United Kingdom
    I've been aware of the reason ever since they changed from the internal brass screw fitting and the insulator was introduced some 40 or 50 years ago. Actually I recall that pull switches used to be a chain that forever broke and needed replacing before the string took over and at the time it was a smooth natural fibre like cotton which was equally vulnerable to breakage.

    The sad thing is bathroom companies charge a lot of money for chrome or brass versions.
     
Loading...

Share This Page