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RCD Question

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  • 02-07-2018 8:56pm
    #1
    minzabud
    Registered Users Posts: 247 ✭✭


    What’s the maximum number of circuits a standard domestic RCD can have fitted?

    Looking at getting my board upgraded as part of some renovations.

    Thanks


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    #2
    2011
    Moderators, Home & Garden Moderators, Technology & Internet Moderators, Regional East Moderators Posts: 12,541 Mod ✭✭✭✭2011


    minzabud wrote: »
    What’s the maximum number of circuits a standard domestic RCD can have fitted?

    According to the regulations: For an instantaneous shower, one and for socket circuits there is no limit. However as more and more is connected to a given RCD the likelihood of nuisance tripping increases. Also in the event of an issue on a circuit protected by an RCD the more circuits the larger the impact.

    Obviously the best and most expensive solution is an RCBO (combined RCD and MCB in a single unit) per circuit is best.


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    #3
    minzabud
    Registered Users Posts: 247 ✭✭minzabud


    2011 wrote: »
    According to the regulations: For an instantaneous shower, one and for socket circuits there is no limit. However as more and more is connected to a given RCD the likelihood of nuisance tripping increases. Also in the event of an issue on a circuit protected by an RCD the more circuits the larger the impact.

    Obviously the best and most expensive solution is an RCBO (combined RCD and MCB in a single unit) per circuit is best.

    Thanks for the detailed answer.


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    #4
    2011
    Moderators, Home & Garden Moderators, Technology & Internet Moderators, Regional East Moderators Posts: 12,541 Mod ✭✭✭✭2011


    You are welcome :)


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