earthing

Asked by  | 17th Jul, 2008, 01:55: PM

Expert Answer:

A protective earth (PE) connection ensures that all exposed conductive surfaces are at the same electrical potential as the surface of the Earth, to avoid the risk of electrical shock if a person touches a device in which an insulation fault has occurred. It ensures that in the case of an insulation fault (a "short circuit"), a very high current flows, which will trigger an overcurrent protection device (fuse, circuit breaker) that disconnects the power supply

Answered by  | 17th Jul, 2008, 08:04: PM

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