In a poly phase circuit if clamp on meter shows same load on three phases and

In a poly phase circuit if clamp on meter shows same load
on three phases and their sum on neutral then why we use
three and a half core cable or maximum the same size of
core as that of phase?

Question Posted / wasifkhan2010

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In a poly phase circuit if clamp on meter shows same load on three phases and their sum on neutral..

Answer / k.prakashchandra

The neutral current is the vector sum of phase currents and
for a balanced load ,it is zero.

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