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Errroneous Earthing.

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In the past I have found a metal outside bulkhead light earthed by a wire connected to a steel screw and washer that was just screwed into the brick wall below the light.

Yesterday I came upon a 50s/early 60s installation with no earthing at lighting points. Some brass plated light switches had been added by the previous owner. A sticker on the back of the brass switches said that they must be earthed, so the installed had amateurishly connected a wire from the brass plates to the central back box securing screw. The metal back boxes were unearthed though.

Z.

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    Not as bad an erroneous earthing as a metal bodied lamp found in a cellar near here a few years ago - the house being wire as loop through rose, but without earth, and the metal light fitting having no insulated  looped-live  terminal but a very convenient terminal screw in the body the spare red wires had been duly connected to the body of the lamp. Presumably by someone with no concept at all of what they were actually doing.  I'd like to think it was not anyone claiming to be an electrician.

    It presumably worked as a light for many years for the original owner, and only after a few years more when the new house owner wanted to change the bulb and got bitten by it, did I get involved…   It then developed a ceiling rose alongside on the day, and soon after got a feed cable with a CPC as part of a rewiring.

    Mike.

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  • 0

    Not as bad an erroneous earthing as a metal bodied lamp found in a cellar near here a few years ago - the house being wire as loop through rose, but without earth, and the metal light fitting having no insulated  looped-live  terminal but a very convenient terminal screw in the body the spare red wires had been duly connected to the body of the lamp. Presumably by someone with no concept at all of what they were actually doing.  I'd like to think it was not anyone claiming to be an electrician.

    It presumably worked as a light for many years for the original owner, and only after a few years more when the new house owner wanted to change the bulb and got bitten by it, did I get involved…   It then developed a ceiling rose alongside on the day, and soon after got a feed cable with a CPC as part of a rewiring.

    Mike.

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