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Wylex 2nd consumer unit

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

  1. zebedee2001

    zebedee2001

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    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
     
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  3. AndyPRK

    AndyPRK

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    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

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    It's 4mm2 SWA
     
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  5. EFLImpudence

    EFLImpudence

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    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

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    OP hasn't given us the cable supply size
     
  7. EFLImpudence

    EFLImpudence

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    :?: You even 'liked' the post.
     
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  9. AndyPRK

    AndyPRK

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    That’s the cable to the garage.
     
  10. EFLImpudence

    EFLImpudence

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    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

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    It most certainly is.
     
  12. aptsys

    aptsys

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    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?
     
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  13. EFLImpudence

    EFLImpudence

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    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.
     
  14. DIYnot Local

    DIYnot Local

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