In electric power distribution, a busbar is a metallic strip or bar, typically housed inside switchgear, panel boards and busway enclosures for local high current power distribution. They are also used to connect high voltage equipment at electrical switchyards and low voltage equipment in battery banks. They are generally un-insulated and have sufficient stiffness to be supported in air by insulated pillars as per ASTM B-187. These features allow sufficient cooling of the conductors and the ability to tap in at various points without creating a new joint.