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What earthing arrangement is this?

Former Community Member
Former Community Member
The supply is from a private transformer in a four core cable 3ph + n. The cable armour is earthed and connected to the MET. However there is also a green and yellow cable connected to the neutral terminal at the main isolator going back to a the transformer casing. The transformer is only 5 or 6 metres away. I think this must have been intended to make it a tncs supply but seems to me to just create parallel neutral conductors. Or is it tn-s-c-s?  I have only been able to go off visual inspection because I could not disconnect the supply..
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  • Former Community Member
    0 Former Community Member

    Johno12345:

    and, I have had, of course, a couple of people exclaiming that 'its illegal!'




     

    LoL - as the saying goes "If you can't change the people, then change the people"


    Regards


    OMS
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  • Former Community Member
    0 Former Community Member

    Johno12345:

    and, I have had, of course, a couple of people exclaiming that 'its illegal!'




     

    LoL - as the saying goes "If you can't change the people, then change the people"


    Regards


    OMS
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