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Earthing neutral

Former Community Member
Former Community Member
Why is it forbidden to earth the neutral at the source of a 3 wire system? 


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  • Former Community Member
    0 Former Community Member

    ProMbrooke:

    Ok- but what is the theory behind keeping a PE insulated? I know I keep asking because to be frank those behind BS7671 know WAAYYYY more than  I do.




     

    1 - To limit the impression of the HV side fault appearing on the LV Neutral - ie the Rise of Earth Potential transfer voltage


    2 - To ensure it is only earthed at one point - if it were bare (and buried) then it  would effectively be multiple earthed


    Regards


    OMS
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  • Former Community Member
    0 Former Community Member

    ProMbrooke:

    Ok- but what is the theory behind keeping a PE insulated? I know I keep asking because to be frank those behind BS7671 know WAAYYYY more than  I do.




     

    1 - To limit the impression of the HV side fault appearing on the LV Neutral - ie the Rise of Earth Potential transfer voltage


    2 - To ensure it is only earthed at one point - if it were bare (and buried) then it  would effectively be multiple earthed


    Regards


    OMS
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