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Mains and Earthing

Discussion in 'Electronic Repair' started by ulindel, Apr 28, 2005.

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  1. ulindel

    ulindel Guest

    Please explain,

    By chance when a light socket was checked, was found that when th
    electrician put his meter across the Live and the Earth (Yel/Grn) wir

    it showed that it was live,
    the same as when he checked between Live and Earth wires.

    This was not so with N & Earth.

    When a check was made in the consumer unit, the same showed there too


    No additions or alterations were made to the house electrics recently


    Any explanations please?? Thanx, ulinde
     
  2. Sounds like you're in the UK. If so, earth and neutral should be at the
    same potential difference - near enough. If an earth is showing
    considerably above neutral voltage the chances are it's not connected.

    BTW, no UK light bulb sockets have earths. On a proper modern installation
    the earth is available at the ceiling rose. Older ones had no requirement
    for this, and although the cable was probably twin and earth, the earth
    wasn't always connected.

    A proper place to ask, though, is <uk.d-i-y>
     
  3. Ross Herbert

    Ross Herbert Guest


    In this Newsletter (Australian) there is a simplified explanation of
    the MEN (Multiple Earthed Meutral) system as used in UK, AUS, NZ etc.
    http://www.energysafety.wa.gov.au/energysafety/media_include/electricians_newslet.pdf
     
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