Knowledge of stranded wire and single strand wire

What is the difference between Z and S in the wire industry? The basic principle of wire strand and the production process of wire strand. s and z represent the stranding direction, s represents left, z represents right, left is counterclockwise, right is clockwise, the adjacent stranding layer twists opposite, - generally the semi-finished outer layer twists to the left, the finished outer layer is right. Compared with enameled single wire, the same cross-sectional area, the surface current area is larger, and the wire body is softer. For example, if a single enameled wire is selected as a thick wire, the stranded wire is a better choice of material in the case of high frequency or limited skeleton space.

Stranding is a wire consisting of multiple conductors. The same cross-sectional area of the wire increases the tensile strength and the surface area of the wire conductor (and thus increases the conductivity) than a single wire, and it is also easy to curl the construction of a single wire. (small capacity wire) twisted wire is divided into many kinds of steel stranded wire, twisted pair wire, etc., a single stranded wire multi-strand conductor twisted into a wire, large capacity wire.

Is stranded wire or single strand wire commonly used? The cross-sectional area of a single wire is the same as the cross-sectional area of a stranded wire, because the stranded wire contains seven thin wires. In addition, the "skin effect" or "skin effect" only exists in high-frequency circuits, and the power supply system is not considered this. The choice of single-core wire or multi-core wire is mostly to consider the hardness of the wire, that is, the use of multi-core wire when the wire is soft.