| Single phase supply | Three phase supply |
| In a single phase supply, it power is supplied through two wires. It is called neutral and phase(life) wire. | In three phase power supply, the power is supplied through four wires, that is three phase and one neutral |
| The voltage of one phase is 230v | The voltage of three phase is 415v |
| It requires more than more wire than three phase supply | It does not require more wire |
| The efficiency of one phase is not higher than three phase supply | The efficiency of three phase supply is higher than one phase supply |
| One phase supply isn’t complex since it has only two wires neutral included) making it more easier o understand | Three phase supply has a four wire( neutral included) making it more complex to understand |
