why earth hole size is biggest in plug point?
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Answer Posted / nikunj patel
The size of earth pin is longer and bigger because of only
two reason as per British standard 1363
• The longer earth pin ensures that the earth path is
connected before the live pins, and remains connected after
the live pins are removed.
• The design of the earth pin being of a larger
dimension prevents it from being inserted into the phase or
neutral sockets should this be attempted in error.
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