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

Dual RCD Board

Discussion in 'Electrics UK' started by colliaa, 26 Sep 2018.

  1. colliaa

    colliaa

    Joined:
    26 Jan 2010
    Messages:
    6
    Thanks Received:
    0
    Location:
    Stirlingshire
    Country:
    United Kingdom
    Ive just moved into a house which has a British General dual RCD board. It looks fairly new. There are two non RCD protected slots which have RCBO’s installed. The previous owner left a diagram which shows the two RCBO’s as ‘ground floor lights’ and ‘ground floor sockets’. What would the reason be for these two ccts to be protected in this way?
     

    Attached Files:

  2. AndyPRK

    AndyPRK

    Joined:
    4 Jan 2009
    Messages:
    3,919
    Thanks Received:
    351
    Location:
    Herefordshire
    Country:
    United Kingdom
    I guess he was keen for these 2 circuits to be working even if there was a fault elsewhere causing the RCD to be off
     
    Last edited: 26 Sep 2018
  3. EFLImpudence

    EFLImpudence

    Joined:
    7 Jul 2010
    Messages:
    27,701
    Thanks Received:
    2,973
    Location:
    Retired to:
    Country:
    Portugal
    An electrical reason would be faults anywhere else do not take out the ground floor lights or sockets - and vice versa.
     
  4. colliaa

    colliaa

    Joined:
    26 Jan 2010
    Messages:
    6
    Thanks Received:
    0
    Location:
    Stirlingshire
    Country:
    United Kingdom
    Yeah, was there a school of thought at some point that both downstairs lights and sockets be be protected like this.i was concerned that there was a recurring fault on one of the ccts possibly causing nuisance trips. Not that that’s happened since I’ve moved in.
     
  5. EFLImpudence

    EFLImpudence

    Joined:
    7 Jul 2010
    Messages:
    27,701
    Thanks Received:
    2,973
    Location:
    Retired to:
    Country:
    Portugal
    Not really.

    That is a possibility. To remove some accumulated earth-leakage.
     
    • Thanks Thanks x 1
  6. colliaa

    colliaa

    Joined:
    26 Jan 2010
    Messages:
    6
    Thanks Received:
    0
    Location:
    Stirlingshire
    Country:
    United Kingdom
    Ah ok. What are the possible causes?
     
  7. EFLImpudence

    EFLImpudence

    Joined:
    7 Jul 2010
    Messages:
    27,701
    Thanks Received:
    2,973
    Location:
    Retired to:
    Country:
    Portugal
    Lots of computers and things like that.

    If you have had no trips, I wouldn't worry about it.
     
    • Thanks Thanks x 1
    • Like Like x 1
Loading...

Share This Page