Conventional bus ducts are used for large currents, with specifications ≥400A and above; cables are used for smaller currents, <400A, and the two are basically incomparable.

Although a large current can be carried by multiple cables together, there is a certain risk when multiple cables are carried together. For example, different cables may have different specifications due to differences in some specifications, and some cables may be overloaded and overheated, and other cables may be underloaded. . Nowadays, in most new electrical projects, low-voltage cables are gradually replaced by bus ducts. The characteristics of bus ducts are: practical and beautiful, safe and reliable, and convenient for branching.

The conductor used in conventional cables in the market is T3 copper (in order to reduce the process and cost, T3 copper (recycled copper) is usually used, but actually T2 (electrolytic copper) should be used. T3 copper cannot be processed into a bus duct because it cannot reach the bus duct process. Requirement), and the conductor used in the busway is T2 copper, and the purity of T2 copper is higher than that of the cable T3. If the busway and the cable are both compared with T2 copper, the busway will have a price advantage under the condition of higher current. In reality, there are fewer and fewer methods for carrying multiple cables, and with the increase of labor costs, the cost of cable wiring and installation will gradually become higher.