Q. What is the use of bus ducts?

Answer

A bus duct (also known as a busway) in the context of electric power distribution is a sheet metal duct or insulated cast resin duct that contains copper or aluminium busbars for the purpose of carrying a significant amount of electricity. It is a method of carrying energy that may be used in place of power cables or cable buses. At one point in time, a busway was made up of bare copper wires that were housed inside an unventilated steel enclosure. These conductors were supported by inorganic insulators like as porcelain.