Busway systems (referred to as busways) consist of a metal casing (steel or aluminum plate), conductive bars, insulating materials, and related accessories to form a busbar system. They can be manufactured as interlocked busways with junction boxes at regular intervals, or as power feed busways without junction boxes in the middle. In the power supply systems of high-rise buildings, power and lighting circuits are often separately installed. Busways act as the main power lines and are vertically mounted on the walls within the electrical shafts, either singly or in multiple runs.

A bus duct typically consists of components such as the starting bus duct, straight-through bus ducts (with and without sockets), L-shaped vertical (horizontal) bends, Z-shaped vertical (horizontal) offsets, T-shaped vertical (horizontal) tees, X-shaped vertical (horizontal) quadrants, variable capacity bus ducts, expansion bus ducts, related accessories, and fastening devices.

Busbars can be divided into three types according to insulation methods: air-insulated busbars, dense-insulated busbars, and high-strength busbars.

High-strength enclosed busway (CFW). The manufacturing process is not limited by sheet material, with the housing designed in a corrugated form to enhance the mechanical strength of the busbars, allowing horizontal sections to be produced up to 13 meters in length. The corrugated design of the housing strategically separates and fixes the busbars, maintaining an 18mm spacing between them, ensuring good ventilation. This significantly improves the moisture-proof and heat dissipation functions of the busway, making it particularly suitable for southern climates. The gap between the conductors reduces the conductor's temperature rise, enhancing overload capacity and reducing magnetic oscillation noise. However, it generates much higher stray current and inductance compared to dense busway models, so when comparing the same specifications, its conductive busbar cross-sectional area is larger.