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what should be distance between two electrical earthing pit
as per i.e.e
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Answer Posted / romil
It can be kept as far away from each other as possible but minimum distance may vary depending upon the length of the earth electrode used. Usually it must be at least the double of the earth electrode's length.
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we have earthmat at 110KV substation.we would like to take earth resistance.b some says that by connecting earth megger terminals (C1,P1) at middile point of earthmat (at riser) will cause voltage gradient at other earthmat nods and dont get exat earth resistance.when connecting at end nods will get exat value . is it correct .please explain
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