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Discuss Rcbo functional earth location in the Electrical Wiring, Theories and Regulations area at ElectrciansForums.co.uk.

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  1. hightower
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    hightower Electrician's Arms

    Location:
    Durham
    When wiring an rcbo where do you tend to put the functional earth? I'm assuming it will be tricky to ensure the small functional earth will get a good grip when placed with its corresponding cpc, so do you put your functional earth in its own terminal?
     
  2. kingeri
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    kingeri Trusted Advisor

    Location:
    Yorkshire
    I never put them with the circuit CPCs, the CSA is miles different. It's best to terminate them in their own terminal, but depending on the board and no. of circuits, you may have to double them up as there is often not enough spare terminals on the earth bar.
     
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  3. Pete999
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    Pete999 Trusted Advisor

    Top Poster Of Month

    Location:
    Northampton
    Separate terminals, do you find the coiled functional earths a pain in the butt? I used to cut them to length, and sheath them with the smallest sleeving I could find to make them easier to dress.
     
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  4. hightower
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    hightower Electrician's Arms

    Location:
    Durham
    They ain't coiled on this board Pete, so hopefully should be able to dress quite nicely.
     
  5. tomspark93
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    tomspark93 Electrician's Arms

    I cut them to length, bootlace ferrel the end and then terminate them With the matching CPC.
     
  6. gazdkw82
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    gazdkw82 Trainee Trainee Access

    Location:
    leicester
    would be good to see some pictures of that ^
     
  7. Brightspark2
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    Brightspark2 Electrician's Arms

    Location:
    North West
    I'm guessing you mean green/yellow sleeving?.

    It doesn't require that though you know Pete, as it's a functional earth which is recommended to be coloured cream, as most come.

    Sent from my E5823 using Tapatalk
     
  8. Brightspark2
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    Brightspark2 Electrician's Arms

    Location:
    North West
    I also put them in the same terminal as the cpc. Makes it easier to identify them IMO.

    Sent from my E5823 using Tapatalk
     
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  9. hightower
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    hightower Electrician's Arms

    Location:
    Durham
    So for the couple of you who have said the same terminal, how do you manage that when you've got a ferrule which might be say 1mm, and a cpc which could be 2.5mm?
     
  10. telectrix
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    telectrix Scouser and Proud of It Trusted Advisor

    Location:
    cheshire/staffordshire
    Business Name:
    Telectrix
    double the end over and fit a 1.5mm or a 2.5mm ferrule.
     
  11. Pete999
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    Pete999 Trusted Advisor

    Top Poster Of Month

    Location:
    Northampton

    I know and no it wasn't GY sleeving, just makes it easier to dress the cables, should have made it plainer Sorry if I confused anyone.
     
    Last edited: Jul 4, 2016
  12. tomspark93
    Offline

    tomspark93 Electrician's Arms

    I double the end of the CPC over and make sure the ferrule sits on top of the middle of the CPC and then tighten as usual.
     
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