earth
Earth 
Electrical connection between an appliance and the ground. In the event of a fault in an electrical appliance, for example, involving connection between the live part of the circuit and the outer casing, the current flows to earth, causing no harm to the user.
In most domestic installations, an earth is created by a connection to a metal water-supply pipe buried in the ground.
In most domestic installations, an earth is created by a connection to a metal water-supply pipe buried in the ground.
© RM 2009. Helicon Publishing is division of RM.
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