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Earthing conductor route

lyledunn
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That’s a 25mm2 earthing conductor run some 20m along a border hedge to an electrode at the rear of the building. It is a permanent, recent installation. When I commented on it the contractor lost his cool and screamed “what the hell is wrong with it”? I thought that the answer was obvious but my written response on behalf of the client is to be framed within the context of 7671. I have no difficulty in digging up the relevant regulations but they are subjective in nature. Anyway, all good fun!
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    You say it goes to an earth rod? I wonder why its 25mm?



    I wonder if the installer considered that it'll become buried in time and so applied table 54.1 - 25mm² copper supposedly being adequate against both mechanical damage and corrosion.


    That said, my hedge trimmer will happily cut through broom-handle sized branches - so doubt a few mm of annealed copper will stop it - and my loppers would certainly make short work of it - so given it isn't actually buried...


       - Andy.
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  • 0

    You say it goes to an earth rod? I wonder why its 25mm?



    I wonder if the installer considered that it'll become buried in time and so applied table 54.1 - 25mm² copper supposedly being adequate against both mechanical damage and corrosion.


    That said, my hedge trimmer will happily cut through broom-handle sized branches - so doubt a few mm of annealed copper will stop it - and my loppers would certainly make short work of it - so given it isn't actually buried...


       - Andy.
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