Answer / k.prakashchandra

It may be due to voltage drop in the line.Momentary drop
while starting only, can be ignored.Connect a load of about
500W and check for voltage drop.If the drop persists then
examine for loose connection/joint which could be any where
from dist transformer to the point of measurement .If you
don't detect any fault still, test the motor.Voltage between
neutral and the earth indicates a loose joint in the neutral.

IF 3 NOS.OF HEATERS,3KW CAPACITY EACH,1 NO.HEATER CONNECTED IN R PHASE,1 IN Y PHASE AND 1 IN B PHASE.THEIR END POINTS CONNECTED IN STAR.IF I CONNECT THIS STAR POINT TO NEUTRAL OR DO NOT CONNECT TO NEUTRAL.WHAT WILL THE DIFFERENCE.

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