The Earth wire provides a low resistance path from the metal
body of an appliance to the earth (ground). Usually this is a green colour wire.It work in the following
way
If accidently the live wire come in contact to metallic body of the apparatus or equipment then this
may cause a shock hazard to the person who happen to touch
the metallic body of the apparatus.
To
avoid this hazard apart form Live and Neutral a third wire i.e. Earth wire is
also connected to the metallic body of the apparatus. This U
might have observed in Electric Iron, Washing Machine. Refrigerator,
Oven etc.
This
earth wire provide a low resistance path to this leaked current and
this current prefer to pass through earth wire than through the body
of the person coz earth wire has lesser resistance than the body of the person.
No comments:
Post a Comment