Multi-strand copper wire consists of many small-sized wires to make a large conductor. The presence of thinner conductors makes stranded wire more flexible and solid compared to other wires of the same diameter. Due to the strength, reliability and durability of copper wire, stranded wires have become the preferred choice for builders.
In addition, stranded wire is more economical and is considered more flexible than solid copper wires with a similar cross-sectional area. The problem of mechanical strength in the case of a solid cable is also higher, because stranded copper wire has a relatively smaller surface area, which is exposed to corrosive effects on the environment. Stranded wire can be used with softness in the application and places that require bending and even re-bending. Due to the high flexibility of stranded copper wires, it is high when it comes to connecting printed circuit boards, headphones, or any other connections that require moving connections as well as tight bends. In addition, they are commonly used as a residential wire, since flexibility allows for easy bending and can be easily deflated by a conduit.
AC power cords, musical instrument cables, computer mouse cables, welding electrode cables, control cables connecting parts of moving machines, cables of mining machines, cables of the rear machine are part of the electrical use of multicore copper wire. Connections between printed circuit boards in devices with multiple circuits require greater flexibility; here, solid wire rigidity can cause stress and lead to movement during assembly or maintenance.
Tin coating on copper and aluminum wire provides greater strength and durability. In tinned copper wire, each strand of copper wire is coated with tin. The manufacturing process can be either hot or electroplated. In the preceding each strand, copper is dipped into molten tin, while in the galvanizing process, the rectifier and the electric charge are used for copper tin. Stranded wire has a higher resistance compared to stranded copper of similar diameter. This is due to the fact that the cross-section of the stranded wire has inevitable gaps between the straight lines.
Connection, magnet and resistance wire are the most popular type of stranded wire. Magnetic wire is used for winding electric motors, generators, speaker coils, transformers and inductors. However, most high-frequency applications that require close effect and better performance at high frequencies use stranded wire that can be insulated and twisted in special patterns.
