Fewpal
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What is the function of an earth wire ? Why is it necessary to earth the metallic bodies of electrical appliances ?

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When the live wire of a faulty appliance comes in direct contact with its metallic case, which has been earthed, the large current passes directly to the earth without passing through the user’s body. Thus, it is necessary to earth the metallic bodies of electrical appliances so as to avoid fatal electric shocks.

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