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Answer Posted / kj
Both answers above are true but do not explain why.
With a 3 phase load an artificial star point is created to
replace the neutral. In a perfectly balanced load this will
have no effect.
If the load per phase is unbalanced the where the star
point is created will depend on the load unbalance. the
voltage phase to neutral may increase in one phase and
decrease in the others.
In one instance I have seen this where the voltage in one
phase increased to 300 in a 416/240 volt system.
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