أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
In case of unbalance condition i.e during fault, there is current flowing in the neutral wire so definitely earth fault occur
No if system is balanced.But in case three phase system is unbalance a differencial voltage appears on the neutral point and led to current flow through earth contact conductor.
