In case of 3Phase Supply,
Voltage R-Earth/Neutral - 220
Y-Earth/Neutral - 220
Z-Earth/Neutral - 220
Total is -> 660Volts
Then Why it is said that 3Phase supply is 440
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Answer Posted / padmavathi
If we measure R-Earth/ Neutral that is 1 PH. 3 Phase, 440V
means we have to measure Phase - Phase i.e. R-Y, Y-B, R-B
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