why the transformer neutral earthing is to be done by copper
flat only,if we use GI flat what is the disadvantage.
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Answer Posted / pradyumna chandra panda
Earth electrod should have low resistance and copper flate meet it. IF we use GI flate then potentional between earth &neutral will be increase on unbalance load, but it is allowed only 20 volt . we can decreare the earh resistance by increance the electrode in parallel.
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