Determine the minimum cable size for a 28A single phase
final sub circuit originating from the distribution board
supplied by three phase submain. The route length of the
final sub circuit is 54 m. Assume 1% voltage drop in the
consumer's mains. Submain specification: Cable: 50mm2 4
core V75 copper; Route length 42m; Maximum demand 135A per
phase
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Answer Posted / james santhosh lenin
3x4sqmm(phase,neutral,earth
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