Answer Posted / rd dadhich

Reasons of earth Pin longer than other pins in a plug
socket :-
1. While inserting equipment first gets earth
connection.as pin goes first
2.While withdrawing the earth connection disconnects in
last
Reason of earth Pin larger in diameter than other pins in a
plug socket :-
Accidently also one can not inser earth pin in other
pins .
Both the above features are for foolfroop safety & no other
reason like low restance etc

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