Answer / pratheesh

In three phase system, if the loads on all three phases are
equal, there will not be any current flow through neutral.
Remember the star point of motor. I1+I2+I3=0. If there is
no potantial in neutral with respect to ground, there will
not be any current flow.
But if the loads on any phase/s are not equal to others,
I1+I2+I3 is not equal to 0. So in this case there will be
some potential on neutral wire at the load side and this
will creat a current flow to the star point of trasformer.

Answer / jawad

NEUTRAL CARRY RETURN BUT NOT POTENTIAL,ALL WHAT WE GET
SHOCKED IS BECAUSE OF POTENTIAL.AND IN ANY CIRCUIT YOU WILL
SEE THAT ALL POTENTIAL HAS BEEN ALREADY DROPPED IN THE
COMPONENTS.SO AT NEUTRAL WE HAVE ZERO POTENTIAL

Answer / satyavir

Neutral carry return current equal to phase current but in
the scence of one phase.OR it carry in three phase
condition only when different current flowing conditon if
current will same in three phase then in neutral wire no
current return.

Answer / pavan

here neutrling is nothing but ground so for ground
potential is zero so current is zero

Earth leakage relay basic knowledge principle

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