Why three-phase power?

Three-phase electricity is "single-phase electricity with three phases differing from each other by 120 degrees," and for this reason, four wires can transmit three times as much single-phase electrical energy, and, if the three phases are balanced, the fourth wire (the center wire) can be eliminated because there is no current passing through it.

Additionally, one of the more important reasons for using three-phase power is that it directly generates the fewest number of phases of a rotating magnetic field with a "defined direction and starting torque". Currently the most common three-phase asynchronous motor, known for its simple structure and powerful, is due to the application of three-phase.