Why neutral has to switch on-off with phase in TN IT TT systems i.e neutral shou

Why neutral has to switch on-off with phase in TN IT TT systems i.e neutral should be taken as fourth pole

Question Posted / rajvi_jain

Why neutral has to switch on-off with phase in TN IT TT systems i.e neutral should be taken as fourt..

As a safety measure , the tr is completely isolated

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