Why 3 phase system requires

We assume that we will only connect single phase load (Light points, fans, TV, AC etc.) in this three phase electrical wiring installation. In other words, we will not power up 3 phase motors because in our homes, we haven’t that kind of (three phase) loads. If three phase load exists in your home, then you can so. As we can see that the total load is exceeded the limit of single phase electrical wiring installation, that’s why we have to wire our distribution in three phase system.

In a Three Phase Wiring Distribution System;

Line to Line Voltage = 440V

Line to NeutralVoltage = 230V

I.e.            

L₁ to L₂= 440V

L₂ to L₃= 440V

L₃ to L₁= 440 V

And

L₁ to N = 230V

L₂ to N = 230V

L₃ to N = 230 V