What is the function of an earth wire? Why is it necessary to earth metallic appliances?
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The main function of the earth wire is to conduct the leaking current from the electrical appliance to the ground . It is conected to the outer metallic body of the appliance
The metallic body of electric appliances is connected to the earth wire so that any leakage of electric current is transferred to the ground. This prevents severe electric shock to the user. That is why earthing of the electrical appliances is necessary.
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