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发布日期:2021年10月21日
Separate earth wire on cooker circuit

Discussion in 'Electricians' Talk' started by Yarnold66,Jan 1, 2021 at 8:08 PM.

  1. Yarnold66

    Yarnold66New Member

    Hi,
    I have been repositioning a cooker switch and encountered a separate earth wire in its own conduit running
    down and wired into the cooker socket alongside the supply earth. What is the reasoning behind this? Thanks.
     
  2. sams

    samsMember

    Could be several reasons.

    One could be a damaged or broken CPC from switch , you need to earth loop impedance test with the original CPC in the cable to see whats going on
     
  3. Bogle Crag

    Bogle CragActive Member

    Someone may have needs an earth elsewhere and borrowed the most convenient
     
  4. spinlondon

    spinlondonScrewfix Select

    Perhaps someone thought bonding was required?
     
  5. BiancoTheGiraffe

    BiancoTheGiraffeActive Member

    Yeah, I wouldn't be surprised if that was the case!
     
  6. Lectrician

    LectricianScrewfix Select

    Older sparks used to often run a 6mm earth cable with 6mm T+E, particularly when supplying showers. No idea why, it was never a requirement as far as I am aware. Supplementary bonding became a requirement in bath/shower rooms, but never cookers!
     
  7. Bogle Crag

    Bogle CragActive Member

    If you have a steel sink it may have been to bond that during the 80s bonding pandemic
     
    BiancoTheGiraffe likes this.
  8. BiancoTheGiraffe

    BiancoTheGiraffeActive Member

    Bonding "pandemic" is accurate!

    My first job at 16 was in a local pub. Every metal item in the whole kitchen had been bonded! Was a bloody nightmare trying to move the stainless steel tables to clean while they were tethered with a bit of green and yellow!
     
    Bogle Crag likes this.
  9. Bogle Crag

    Bogle CragActive Member

    We were sent to bond display cases at a museum, they were constructed out of box section with plastic insert joints would have needed about 20 links per case, the "engineer" changed his mind when it was pointed out
     
    BiancoTheGiraffe likes this.
  10. ToKyoHot 一本Yu CAMERAtan Toy Digital Camera 推薦 ,没那么简单 amp nbsp amp nbsp 黄小琥 amp nbsp amp nbsp 铃声 威锋 The Happy Builder

    The Happy BuilderActive Member

    If the lighting circuits were installed without an earth wire it may have been an earth for a fluorescent light fitting in the kitchen.
     

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