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

Wylex 2nd consumer unit

Discussion in 'Electrics UK' started by zebedee2001, 2 Dec 2020.

  1. zebedee2001

    zebedee2001

    Joined:
    5 Mar 2008
    Messages:
    65
    Thanks Received:
    1
    Location:
    Norfolk
    Country:
    United Kingdom
    Hi

    I have this consumer unit connected via a Henley block to the meter. It powers my garage via the 32A MCB and the shower via the 40A MCB. It only has a 63 A RCD. I know I can apply diversity. So I'd this safe? Also, is the RCD actually a RCCB or should there also be an overcurrent device rather than the RCD? IMG_20201202_112828_428.jpg IMG_20201202_112815_998.jpg IMG_20201202_112815_998.jpg
     
  2. Sponsored Links
  3. AndyPRK

    AndyPRK

    Joined:
    4 Jan 2009
    Messages:
    5,345
    Thanks Received:
    509
    Location:
    Herefordshire
    Country:
    United Kingdom
    It's fine.

    No its not an RCCB

    The installer could apply diversity when it was installed

    What size cable goes to the garage ?
     
  4. zebedee2001

    zebedee2001

    Joined:
    5 Mar 2008
    Messages:
    65
    Thanks Received:
    1
    Location:
    Norfolk
    Country:
    United Kingdom
    It's 4mm2 SWA
     
    • Like Like x 1
  5. EFLImpudence

    EFLImpudence

    Joined:
    7 Jul 2010
    Messages:
    35,016
    Thanks Received:
    3,886
    Location:
    Retired to:
    Country:
    Portugal
    It IS an RCCB in that it has the same function as those that are labelled correctly.
    Neither offers overcurrent protection.
    An RCBO is also an RCD.

    Whether OCP is required depends on the rating of the main fuse and supply cable.


    Just seen the size of the cable so yes, OCP is required somewhere.
     
  6. AndyPRK

    AndyPRK

    Joined:
    4 Jan 2009
    Messages:
    5,345
    Thanks Received:
    509
    Location:
    Herefordshire
    Country:
    United Kingdom
    OP hasn't given us the cable supply size
     
  7. EFLImpudence

    EFLImpudence

    Joined:
    7 Jul 2010
    Messages:
    35,016
    Thanks Received:
    3,886
    Location:
    Retired to:
    Country:
    Portugal
    :?: You even 'liked' the post.
     
  8. Sponsored Links
  9. AndyPRK

    AndyPRK

    Joined:
    4 Jan 2009
    Messages:
    5,345
    Thanks Received:
    509
    Location:
    Herefordshire
    Country:
    United Kingdom
    That’s the cable to the garage.
     
  10. EFLImpudence

    EFLImpudence

    Joined:
    7 Jul 2010
    Messages:
    35,016
    Thanks Received:
    3,886
    Location:
    Retired to:
    Country:
    Portugal
    Yes, that's what I meant. Is that not the supply cable - to the garage?

    The DNO supply cable is hardly relevant, is it?
     
  11. Risteard

    Risteard

    Joined:
    18 Jun 2010
    Messages:
    2,118
    Thanks Received:
    150
    Location:
    Derry, Ireland
    Country:
    Ireland
    It most certainly is.
     
  12. aptsys

    aptsys

    Joined:
    16 Sep 2007
    Messages:
    1,796
    Thanks Received:
    135
    Location:
    Cambridgeshire
    Country:
    United Kingdom
    The 4mm² goes to the garage from this consumer unit and the consumer unit is fitted and connected to the meter tails. Why is OCP required in addition?
     
    • Thanks Thanks x 1
    • Like Like x 1
  13. EFLImpudence

    EFLImpudence

    Joined:
    7 Jul 2010
    Messages:
    35,016
    Thanks Received:
    3,886
    Location:
    Retired to:
    Country:
    Portugal
    Ah, I now see where I was confused - I think.

    I had assumed the garage CU was connected via henly blocks to the meter with the 4mm².

    If it is, instead, connected with 'tails' then 4mm² to the garage then it is alright.
     
Loading...

Share This Page