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RCBO In Distribution Board or Isolator With RCD?

Nano Brewery
I'm trying to decide which would be the most suitable and sensible option? 


I have a Control Board that will be switching 4x 3-Phase Immersion Elements.

9kW

9kW

6kW

3kW


Control Board has Rail Mount Fuse Holders & Contactors installed for each circuit.


My question is would it be better to have a suitably rated RCBO installed in the Distribution Board which will be feeding the Control Board or should I go with downstream Isolators with RCD's?  I'm leaning towards the later as I would have separate RCD protection on each circuit.


Look forward to your feedback.  Cheers, Dan.

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  • 0
    Nano Brewery:

    Cheers Andy.  I was thinking of going with SWA Cable clipped direct to basket from the Control Panel to IP rated Plugs/Sockets mounted on the wall.  Then floating SY Cable (been recommended) from the wall to the Tanks, which is about a 2m run.  Thinking Plugs/Sockets just to make life easy if I ever want to move things around and also for easier access for cleaning.  Could just go with hard wired Isolator though if this would negate need for RCD?  Earthing system is TN-C-S. 




    Any more thoughts on this Andy?...


    Wondering if an Enclosure with RCD could be an option for individual protection?... https://www.cef.co.uk/catalogue/products/1051602-3-module-insulated-ip65-enclosure


    Also wondering if a direct feed from a Distribution Board RCD to the Control Panel could be an option for universal protection at less cost?  Is this possible and allowed?


    Thanks for your feedback.


Reply
  • 0
    Nano Brewery:

    Cheers Andy.  I was thinking of going with SWA Cable clipped direct to basket from the Control Panel to IP rated Plugs/Sockets mounted on the wall.  Then floating SY Cable (been recommended) from the wall to the Tanks, which is about a 2m run.  Thinking Plugs/Sockets just to make life easy if I ever want to move things around and also for easier access for cleaning.  Could just go with hard wired Isolator though if this would negate need for RCD?  Earthing system is TN-C-S. 




    Any more thoughts on this Andy?...


    Wondering if an Enclosure with RCD could be an option for individual protection?... https://www.cef.co.uk/catalogue/products/1051602-3-module-insulated-ip65-enclosure


    Also wondering if a direct feed from a Distribution Board RCD to the Control Panel could be an option for universal protection at less cost?  Is this possible and allowed?


    Thanks for your feedback.


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