What is the difference between three phase and single phase power?
Single-phase power is what most computers and telecommunication systems run on, as well as most things in your home or office. Single phase refers to the fact that one sine wave of voltage and current is being supplied and used. Three-phase power is used when large amounts of power are required for industrial systems, large electric motors and industrial equipment or a facility wide UPS. Three-phase refers to the fact that three offset synchronous sine waves of current and voltage are being used to obtain approximately 1.7 times as much power each of the individual phases.