It is usually a rope-like cable twisted together by several or several groups of wires [at least two in each group]. Each group of wires is insulated from each other and often twisted around a center, with a highly insulating covering layer on the entire outside.
Wires and cables refer to materials used for power, communication and related transmission purposes. There is no strict boundary between "wires" and "cables". Products with a small number of cores, small product diameters and simple structures are usually called wires, those without insulation are called bare wires, and others are called cables; conductors with larger cross-sectional areas (greater than 6 square millimeters) are called large wires, smaller ones (less than or equal to 6 square millimeters) are called small wires, and insulated wires are also called cloth wires.
Wires and cables mainly include bare wires, electromagnetic wires, insulated wires for motors and electrical appliances, power cables, communication cables and optical cables. Cables include power cables, control cables, compensation cables, shielded cables, high-temperature cables, computer cables, signal cables, coaxial cables, fire-resistant cables, marine cables, etc. They are all composed of multiple strands of wires and are used to connect circuits, electrical appliances, etc.
