Hotels are all 220v electrical appliances. Why use three-phase electricity?

Three-phase electricity can connect three 220s. Pay attention to the three-phase balance.

Three-phase alternating current is a transmission form of electric energy, which is called three-phase electricity for short. Three-phase AC power supply consists of three AC potentials with the same frequency, the same amplitude and the phase difference of120.

Three-phase alternating current has many uses. Most industrial AC electrical equipment, such as motors, uses three-phase AC power, and the three-phase power supply system also saves materials than single-phase power supply system.