An electrical duct is a piping system used for protection and routing of electrical wiring. Electrical ducts or conduits are often made of metal, plastic, fiber, or fired clay. Flexible ducts are available for special purposes. Electrical ducts are generally installed by electricians at the site of installation of electrical equipment. The term duct is commonly used by electricians to describe any system that contains electrical conductors. An electrical bus duct is a form of rigid electrical conductor with a grounded metallic housing. It is manufactured in fixed lengths and assembled by bolting the ends together. It is commonly used in both light manufacturing and high rise buildings. The most common Siemens bus duct, also known as Siemens busway, is a three phase low voltage product. It primarily intended for indoor use and is available in designs with various degrees of immunity to water incursion. Finding used electrical equipment, such as used ppe equipment and other Seimens items like Siemens electrical panels and Siemens panel board, is as simple as looking online or other places where used goods are advertised. Many places call for the buying and selling of used electrical equipment so it’s just a matter of finding the right parts from the right dealers. While new equipment is rigorously tested to meet safety standards, there is the chance of receiving a counterfeit item. So, whether you choose to buy used electrical equipment, such as used transformers, or new, you have to make sure that you are getting what you pay for.