A bus bar is simply a distribution point for electrical power. It basically collects and then distributes the electrical power to and from various electrical equipment such as generators. They are usually situated in junction boxes or distribution panels found at central points within the aircraft. In a modern passenger jet, bus bars are thick metal strips or rods (often copper) where all the electrical consumers are connected. The electrical consumers connected to a supply busbar are usually in parallel so that isolating individual loads (in case of failure or malfunction), decreases the bus-bar current consumption.