A 250V generator supplies through a pair of feeders to a load consisting of 200 lamps of 200 watts each, 50 lamps of 100 watts each and 25 lamps of 40 watts each at a distance of 200 metres. The potential difference across the is 230V. Find the cross section area of a wire if the specific resistance of the wire is 1.77 micro ohm cm.
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