Busbar and busbar trunking systems and bus ducts (often spelled bus bar or buss bar) are types of electrical conduit used to distribute power to various electrical devices and systems within a building or facility. They are made of copper or aluminum, typically insulated to prevent electric shock.
Busbars come in a variety of forms, each with unique benefits and some drawbacks. Among the busbar varieties that are most frequently used are:
These are the most basic and economical types of busbar. They are constructed from a single metal section, such as copper or aluminum. The purpose of this busbar is to carry the electrical load and dissipate heat.
Copper and aluminum (or for the non-US speaking community, aluminium) busbars are used to connect various electrical system components in electrical panels and switchgear. Being made of copper or aluminum, they are highly conductive, making them more corrosion-resistant.
Busbars are used in many environments across multiple industries in a variety of applications, including: