mains - Why is the three-phase voltage 440V, if single-phase alone is 230V? - Electrical Engineering Stack Exchange

Why it is not 230V ×3, why only 440V?

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mains - Why is the three-phase voltage 440V, if single-phase alone is 230V? - Electrical Engineering Stack Exchange

If 1-phase voltage is 220V, why is 3-phase 440V and not 660V? Electrical Interview Questions

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