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Discuss Hi guys, new member here needing advice on workshop wiring. in the New Member Introductions area at ElectrciansForums.co.uk.

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  1. Martin Turner
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    Martin Turner EF Member

    Location:
    Southampton
    Hi guys, new guy here and may need some help with my new home workshop wiring.

    I currently work on crane's and straddle carriers so have a mechanical and electrical knowledge on drive's, motors, PLC controls etc.

    Also I still have my Gas Safe running and I am still on the Worcester WAI scheme so have a knowledge on heating system and control wiring.
     
  2. westward10
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    westward10 In echoed steps I walk across an empty dream. Electrician's Arms

    Location:
    Northamptonshire
    Hello Martin feel free to ask away.
     
  3. Murdoch
    Online

    Murdoch Electrician's Arms

    Location:
    Woking
    Welcome. Get your tin hat ready!
     
    • Like Like x 1
    Last edited: Aug 12, 2017 at 1:10 PM
  4. Pete999
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    Pete999 Trusted Advisor

    Location:
    Northampton
    Welcome Martin
     
  5. Pete999
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    Pete999 Trusted Advisor

    Location:
    Northampton
    What exactly would you like to ask regarding your workshop electrical installation, an idea of the size ans what applications you intend using would be a good starting place, along with what you have already with regards to electrics.
     
  6. Vortigern
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    Vortigern Electrician's Arms

    Location:
    England
    Business Name:
    F.H. Electrical
    He did say he may need some help, not that he does. He's probably far too busy wiring it up right now to be bothered with this forum.
     
    • Funny Funny x 3
  7. Pete999
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    Pete999 Trusted Advisor

    Location:
    Northampton
    A heads up on progress would be nice.
     
    • Agree Agree x 1
  8. Martin Turner
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    Martin Turner EF Member

    Location:
    Southampton
    Thanks for the warm welcome guys.

    I haven't started yet as today I am on shift at Southampton docks.

    Long story short I have a split two way board in our house and the existing 10 mm that did our shower via a 40A MCB was done away with a few years ago but I left it in the loft to feed a future workshop.
    The attached work shop it now built down the side of our house and the 10mm is now in there ready to progress with.

    The questions:-

    1. As this cable is already protected by a 30ma RCD would you just fit a board in the workshop with just a main switch and MCB's?.

    2. As above but fit a RCD protected board in the workshop but then you would have two RCD's in parallel?.

    3. Remove the 40A MCB from my house board and fit onto the non protected side a 40A RCBO, this would stop the house tripping if the workshop trips.
    This would be a harder option though as the previous owners boxed in our consumer unit so you can only open the door at the moment.

    In the workshop:-

    Lighting
    32A ring for sockets
    1X 16A socket
    1X 32A socket

    Thanks in advance.
     
  9. Pete999
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    Pete999 Trusted Advisor

    Location:
    Northampton
    Wire the 10mm2 onto a non RCD protected CB in the house CU and fit a garage CU in the workshop complete with RCD protection and CBs for circuit protection, this would limit any earth fault tripping to the workshop and alleviate any trips into the house to reset an RCD. In my opinion
     
    • Agree Agree x 2
  10. Wilko
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    Wilko Electrician's Arms

    Location:
    Berkshire
    Business Name:
    Wilko Electrics
    Hi Martin and Welcome to the Forum !
     
  11. westward10
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    westward10 In echoed steps I walk across an empty dream. Electrician's Arms

    Location:
    Northamptonshire
    Unless the 10.0 requires additional rcd protection.
     
    • Agree Agree x 1
  12. Martin Turner
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    Martin Turner EF Member

    Location:
    Southampton
    Thanks for the advice, I could do it that way but the 10mm wouldn't be protected between the two boards if it's fed from the non protected side. It would probably be ok though as the only part of the cable you can get at is where it runs across my loft of our house and then through the wall into the workshop.
     
  13. westward10
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    westward10 In echoed steps I walk across an empty dream. Electrician's Arms

    Location:
    Northamptonshire
    If any part of it is buried in a wall at a depth of less than 50mm and without earthed containment it requires additional rcd protection. If this is not the case and fault protection can be maintained without the use of an rcd then you can omit rcd protection.
     
    • Agree Agree x 3
  14. Martin Turner
    Offline

    Martin Turner EF Member

    Location:
    Southampton
    The original 10mm shower feed goes from the CB, through the wall to the outside and then in black plastic conduit up the wall and then back into my loft space.
    Clipped through the loft and then did drop originally into a shower isolation point, this has been disconnected and run into the workshop.
     
  15. Pete999
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    Pete999 Trusted Advisor

    Location:
    Northampton
    Any joint between CU in the house and the workshop?
     
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