Why do most electrical appliances have an earthing wire in them
Answers
Many electrical appliances - including cookers, washing machines and refrigerators - have metal cases. The earth wire creates a safe route for the current to flow through if the live wire touches the casing.
You would get an electric shock if the live wire inside an appliance, such as a cooker, came loose and touched the metal casing.
However, the earth terminal is connected to the metal casing so that the current goes through the earth wire instead of causing an electric shock. A strong current surges through the earth wire because it has a very low resistance. This breaks the fuse and disconnects the appliance.
the earthing of electrical appliances is necessary to prevent serve electric shock to the users. the electri body of electric appliances is connected to earth wire so that any leakage of electric current is transferred to the ground. some electrical appliances including cookers, washing machine and refrigerator.
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