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Answer Posted / tse-wang
Electrically Neutral is different from Eaarth.
Neutral is (assumed) electrically zero potential point and
if any line (wire) is connected between the neutrals it's
function is just to balance the current in two or many
circuits.
Earth is a system designed and connected to the electrical
appliences to bring the connected point (appliences) to
electrically to the earth level (which we assume to be
zero). To be specific, the earth potential is not always
zero. However, connecting the earth (our standing point or
the next touch point electrically)to the electrical
appliance will try to ballance the two connected points to
equi-potential (same voltage level) level. and avoid flow
of current through. That's why earth connection should be
made by low resistant wire.
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