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Temporary earth bonding

Updated: 4/28/2022
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Temporary earth bonding is when you attach certain metal objects in a dwelling after removing the previous connector (eg. steel bath) with an earthing continuity cable (coloured green and yellow). This then allows work to take place on the designated faulty area. The earth in electrical terms, carries no current, and it is this that electricity will make a dash for when it is allowed to escape from its secure home in an electric cable or flex. This is because one side of the electrical supply, the neutral, is intentionally connected to earth. If someone touches a live conductor then a current will flow through the person, their shoes, the floor, the wall, via earth and back to the supply transformer via one or more earth connections of the transformer neutral. The person has completed the electrical circuit. Should any fault develop in an electrical system the electricity will always head for earth, taking the easiest route there. The electrical appliances and supplies in the home are of a much higher potential and if any of these become available to touch and are electrically charged at a different voltage to earth the possibility of an electric shock exists, with the current passing through the connection between the charged parts and earth. For instance, a person comes into contact with a conductive part that is at a potential difference to earthed metalwork and that metalwork; then a very serious shock can result. In order to eliminate this possibility, all electrical earths of circuits supplying equipment in the bathroom and all extraneous conductive parts are bonded together. In this way, even if a potential does develop, such as during an earth fault on one of the electrical circuits. Should any electrical leakage occur the leaking current will try and find a passage to earth. It is therefore important that precautions are taken to ensure.

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