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Why the earth terminal pin is larger than phase and neutral
in three pin plug top>
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Answer Posted / praveen kotha
We know that the resistance is inversely proportional to area of cross section.so if area increases resistance decreases,so the leakage current will take low resistance path.that is why earth pin is thicker.
It is longer because the first to make connection and last to disconnect should be earth pin,this will assure safety for the person who uses the electrical instrument.
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