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how to check the earth resistance value& what is the
minimum earth resistance for good earthing sysytem.
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Answer Posted / anil
Now a days all telecommunication installations insist for value <0.5 ohms.
However domestic installation is ok upto 2 ohms.
The easiest way to measure the value of domestic earth is using a multimeter measure voltage across n-e it must be less than 5 ohms.
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