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Saturday, August 3, 2019

Why do 3 phase motors does not need neutral

Why do 3 phase motors does not need neutral?

3 phase Motors are intrinsically balanced type of load when a motor is connected to 3 phase AC Power all of the phases will share the load equally.For the case of equal loads on each of three phases, no net current flows in the neutral. The neutral current is the inverted vector sum of the line currents. So we use 3 core cables and triple pole switch gears for 3 phase motors. Hence,there is no need of a neutral cable.

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