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Why neutral has to switch on-off with phase in TN IT TT systems i.e neutral should be taken as fourth pole
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Answer Posted / k.prakashchandra
As a safety measure , the tr is completely isolated
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hai...... tis is Hemanth. jst now completed electrical engineering... i wanna to apper for ap tranco exam... plzz send me the previous q's paper link......thanx in advance.
