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Discuss Square D MCB to RCBO in the Electrical Forum area at ElectrciansForums.co.uk.

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  1. Marcus Vaughan
    Offline

    Marcus Vaughan Regular EF Member

    Location:
    Sheffield
    upload_2018-11-8_19-15-35.png upload_2018-11-8_19-16-4.png

    Hi All,

    I have just been to to view a job on my way home. The customer is asking for a new double socket immediately below the consumer unit (that's convenient!).

    It's an old Square D board without an RCD in sight.

    I guess it would be very easy to install an RCD socket outlet - spurring from either the kitchen ring or 'main ring' one way or the other.

    But I was thinking - probably for the same price - I could swap out the MCB for an RCBO, though it would be second hand, but with the obvious benefit of providing additional protection for an entire socket circuit.

    I thought of suggesting a board change - but that seems a bit OTT when a customer on a budget only wants an additional socket.

    Question is then - what would you do?

    Perhaps its not viable anyway - the MCB's are marked up as Dom, eg Dom32B6 - so am searching the web to see if a replacement RCBO even exists (by Square D/Schneider)...........
     
  2. Murdoch
    Offline

    Murdoch Electrician's Arms

    Location:
    Woking
    Spur from CU, surface trunking, RCD socket ......... only if earthing and bonding in place

    As of the 1st Jan 2019 ............... these issues will get far , far more difficult..
     
    • Agree Agree x 1
  3. Marcus Vaughan
    Offline

    Marcus Vaughan Regular EF Member

    Location:
    Sheffield
    Thankyou.:)
     
  4. ipf
    Offline

    ipf Forum Mentor

    Agree with that. Difficult to find anything suitable, RCBO wise.
    I like that 'useful' little drawing on the lid, by the way.
    If it keeps tripping, keep resetting, maybe?
     
    • Funny Funny x 1
  5. 123
    Offline

    123 Electrician's Arms

    You can get RCBO's for that board. Like here. I'm not sure if Schneider make new ones for it, not familiar with that range, usually just see the older QOE (eyewatering prices for RCBO's) and the KQE stuff here.
     
    • Like Like x 1
  6. Murdoch
    Offline

    Murdoch Electrician's Arms

    Location:
    Woking
    MK seem to fit nicely .............:)
     
  7. KEV 1 N
    Offline

    KEV 1 N Regular EF Member

    Location:
    Durham
    I think this replaced the DOM...Easy 9 by Schneider
    BE2129E6-7432-4D0E-8E1D-1866D2FDB82B.jpeg
     
    • Like Like x 1
  8. Marcus Vaughan
    Offline

    Marcus Vaughan Regular EF Member

    Location:
    Sheffield
    Good spot that.

    To prove I am doing my homework though - I found this https://www.schneider-electric.com/resources/sites/SCHNEIDER_ELECTRIC/content/live/FAQS/175000/FA175169/en_US/Easy9_Domae conversion.pdf

    from Schneider.

    which suggests to me that a new easy 9 RCBO will fit straight in?

    Kev 1 - we must have typing at the same time!
    I think you are right though.
     

    Attached Files:

  9. Marcus Vaughan
    Offline

    Marcus Vaughan Regular EF Member

    Location:
    Sheffield
    I didn't take the cover off - but at least the cover itself hasn't been butchered. That's the third CU I've seen today with mixed MCBs.
     
  10. KEV 1 N
    Offline

    KEV 1 N Regular EF Member

    Location:
    Durham
    Beware the old KQE RCBO and DOM are made opposite to each other....in terms of fitting to the bus bar.
    F4CFD577-5AFD-4E53-89B7-3EC4BE7BF61D.jpeg
    It is possible to remove the clip on the KQE type to give a normal screw terminal (we often did it when fitting into old Merlin Gerin boards) however the new Schneider type you can’t remove the clip as they’re glued in place!
     
    • Informative Informative x 2
    • Useful Useful x 2
    • Like Like x 1
  11. Murdoch
    Offline

    Murdoch Electrician's Arms

    Location:
    Woking
    Its extremely common .........
     
  12. ChrisElectrical88
    Offline

    ChrisElectrical88 Forum Mentor

    Location:
    Norwich
    Drill the glue out and the screw is just behind it. Did it almost every week at one of my last companys. Didnt effect the RCBO at all.
     
    • Useful Useful x 2
  13. westward10
    Online

    westward10 In echoed steps I walk across an empty dream. Staff Member Moderator

    Location:
    Northamptonshire
    That consumer unit is not that old Domae was aimed at the domestic market to replace the Quickline II.
     
  14. Marcus Vaughan
    Offline

    Marcus Vaughan Regular EF Member

    Location:
    Sheffield
    That’s interesting. I have worked on a quick line boards - so these came after...

    I think I’ll dead test one of those ring finals, and if all OK, fit an easy9 RCBO and incorporate the new socket into the ring. I’d have a warm glowy feeling if I left a whole circuit RCD protected. I don’t think the materials would cost significantly more anyway.
     
    • Winner Winner x 2
  15. telectrix
    Offline

    telectrix Scouser and Proud of It Respected Member

    Location:
    cheshire/staffordshire
    Business Name:
    Telectrix
    don't forget that the main switch is arse about face.
     
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