Physics, asked by khushi1513, 1 year ago

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​​Q . Why earth pin of 3 pin plug is longer and thicker than other?


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Answers

Answered by Abhishek9731
2
hey may useful my answer

The following are the advantages of using thick and longer earth wire -

1) It does not allow incorrect plugging in a three pin socket.
2) It provide the sufficient contact area with the hollow pin of the socket which reduces the contact resistance of the earth wire.
3) while plugging in ,the earth wire makes earlier contact to the socket as compared with other two. Thus the metallic body of the appliances makes contact with the earth before energizing. Similarly, when removing from the socket it loses it contact the last.
 

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Answered by arnavpandita1
4
The earth pin is longer so that it establishes connection even before the live and neutral pin and disconnects after the neutral and live pin disconnects

the earth pin is thicker so that we don't put the pins in the wrong position
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