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Earth rod recommended

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  • 06-04-2024 3:24pm
    #1
    user1842
    Registered Users Posts: 1,108 ✭✭✭


    Hi,

    We are having an old house (Dublin semi-d with 3-phase supply) rewired. It is TNCS. The electrician wants to install an earth rod with 10mm2 square cable back to the earth buzz bar on the consumer unit.

    I don't understand why this is necessary. He told me that if the ESB check they will insist a earth rod is installed.

    Any views on this?

    Thanks.



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    #2
    drury..
    Registered Users Posts: 291 ✭✭drury..


    Its standard procedure to wire a rod on a rewire

    What makes you think otherwise

    ESBN don't do any checking these days. They did up until the establishment of RECI



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    #3
    user1842
    Registered Users Posts: 1,108 ✭✭✭user1842


    No reason really just that the house currently has no earth rod.

    I assume this is just for belt and braces is case of the loss of the PEN conductor?

    Also where is the best placement for the rod?



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    #4
    drury..
    Registered Users Posts: 291 ✭✭drury..


    Ya think that's it . To keep the touch voltage down on an open PEN fault if memory serves

    Also important for car chargers afaik to mitigate hazard of the car being live

    If memory serves it's allowable to wire a rod from the cabinet when fitting car charging .Not 100% on that

    Also important to remember that RCDS don't operate in above fault conditions



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