In 3 wire DC system, the area of cross section of neutral is
generally________of either outer.
Same
Half
Doubled
l/4th
Half
In a 3-wire dc system, there are two outers and a middle or neutral wire which is earthed at the generator.
If the load is balanced, the current
in the neutral wire is zero, assuming balanced loads.
Load current 
Let a3 be the area of X-section of each outer wire line losses,
Assuming the area of X-section of
neutral wire to be half that of the outer wire, volume of conductor material
required.
Hence, the correct option is (B).
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