Question

What is meant by 3 phase supply

Answer 1

Three Phase electric power is a common method of alternating current electric power generation,
transmission and distribution. It is a type of polyphase system and is the most common method used by electrical grids worldwide to transfer power.It is also used to power large motor and other heavy loads.
A three-wire-three-phase circuit is usually more economical than an equivalent two wire single - phase circuit at the same line to the ground voltage.