Single phase electricity
Contents
Single-phase electric power refers to a form of electric energy transmission composed of a phase wire and a neutral wire. When necessary, there will be a third wire to prevent electric shock.
Three-phase power
Three-phase alternating current is a form of electric energy transmission, referred to as three-phase electricity for short. A three-phase AC power supply is a power supply composed of three AC potentials with the same frequency, the same amplitude, and the phases differing by 120°.
What is the difference between three-phase electricity and single-phase electricity?
1, the voltage is different
- Three-phase electricity: The three-phase voltage is 380V between A, B and C, and the electrical appliance is a three-phase 380V motor or equipment.
- Single-phase electricity: Single-phase is 220 volts.
2, the structure is different
- Three-phase power: Three-phase AC power is a power source composed of three AC potentials with the same frequency, equal amplitude, and 120° phase difference.
- Single-phase electricity: A phase wire (commonly known as a live wire) and a neutral wire constitute a form of electric energy transmission. If necessary, there will be a third wire (ground wire) to prevent electric shock.
3, the characteristics are different
- Three-phase electricity: The transportation equipment has the advantages of simple structure, low cost, reliable operation and convenient maintenance when used.
- Single-phase electricity: The output power is not constant.
Is it better to use single-phase power or three-phase power?
It depends on the amount of electricity used. The power consumption is small, less than a few kilowatts, and the single-phase one is most used, which is simple and practical.
If the electricity consumption is large, use three-phase electricity, which has high efficiency and easy wiring.