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How many earthing pits are requier to disapper the surge
current of one lighting arrester.
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Answer Posted / v g acholkar
minimum two copper earthing pits required for lighting arrester
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why do we need to use 3c+3e cable, normally i select only 3c+e cable and i think it is enough. pls explain the usefull of 3e cable ( in this project the earthing system is well done)
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