WHY DOES NEUTRAL DO NOT CARRY EVEN THOUGH IT CARRIES RETURN
CURRENT?

Answer Posted / prashant

Neutral does not carry curret only in the cae of a balanced
load. However in the case of an unbalanced load ( 3
Phase ), neutarl definitely carries the unbalance current.
That is why we have 4 pole ELCBs - to ISOLATE THE CIRCUIT
IN CASE of fault in neutral

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