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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 / kalpesh
the earth resistance can be checked by using earth tester
04 spike method.
as far as minimum earth resistance value is concern, it
depends on teh type of gazet connected to this earth pit.
however the resistance should be as low s possible
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When we have earthing mesh or underground earthing network in industrial plants, weather we have NT-S or NT-C-S kind of earthing system, so eventually weather we must use 4 or 5 wire in 400 volt level (For example 3×150+70 mm2 or 5×150 mm2) in this connection I would like to know exactly the paragraph of IEC or IEEE number
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