If a 1-Phase Supply is 230V, Why is 3-Phase 400V & Not 690V?
![If a 1-Phase Supply is 230V, Why is 3-Phase 400V & Not 690V?](https://www.electricaltechnology.org/wp-content/uploads/2021/11/Levels-of-Voltage-in-3-Phase-Supply.png)
When Single Phase Supply Voltage is 220V, Why is Three Phase 440V and Not 660V? If the Single Phase supply voltage is 230V, Why is three Phase 400V and Not 690V?
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Solved 1. A 3-phase balanced load of 80kW, 690V has a power
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