Why in a three pin plug the earth pin is thicker and longer
than the other pins?
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Answer Posted / jeff
For electrical safety reasons the longer earth pin is the
first pin to establish contact when all three pins (earth,
active and neutral)are inserted into a socket. It is also
the last pin to be disengaged. The larger csa of the earth
pin allows any fault current (active to earth) to flow
easily through the pin/socket connection.
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