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Answer Posted / 7anoter4
Usually a vertical grounding electrode –made of copper,
copperweld steel, stainless steel or else-and length of 3-20 m
is driven in earth and the upper end will be exposed in a pit
covered by a lid- about 0.3-0.6 m deep and 0.3 m diameter.
This pit facilitates electrode connection with horizontal
grounding conductor and as a check point of electrode state-
grounding [earthing] resistance measurements and other.
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