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An electrical cable is a bundled or side-by-side arrangement of one or more wires to convey electric current.

A cable assembly, also known as a cable tree or cable harness, is a device that connects many terminals together. A cable assembly is made up of one or more electrical cables and the connectors that go with them. A cable assembly is not always ideal for connecting two devices. Still, it can be used as a component of a larger product (e.g., to be soldered onto a printed circuit board with a connector mounted to the housing).

The term cable initially referred to a nautical line of a specified length used to anchor huge ships by combining many ropes to create a strong thick line. As electric technology progressed, individuals began to use groups of wires and different sheathing and shackling methods that resembled mechanical cabling, and the name “electrical wiring” was coined. An electrical wire was frequently insulated with fabric, rubber, or paper throughout the nineteenth and early twentieth centuries. Except for high-reliability power lines, plastic materials are commonly utilized nowadays. Because of its usage in electrical communications, the word has been linked with communications.

Electrical cables link two or more devices, allowing electrical signals or power to be sent from one to the other. Cables are used for a variety of purposes, and each one requires customization. In electronic equipment, cables are commonly used for power and signal circuits. Undersea cables are used for long-distance communication. Electricity cables, particularly high-voltage wire, are used for bulk transfer of alternating and direct current power. Electrical cables are widely utilized in the wiring of buildings for lighting, power, and control circuits that are permanently fixed. When compared to alternative wiring methods, installation labor is reduced since all of the circuit conductors necessary may be placed in a cable at the same time.

An electrical cable is a physical assembly made up of one or more conductors, each having their insulation and optional screens and separate coverings, assembly protection, and protective covering (s). The wires in electrical cables can be stranded to make them more flexible. Smaller individual wires are twisted or braided together in this technique to generate more significant, more flexible wires than solid wires of comparable size. The maximum flexibility is gained by bundling tiny wires before concentric stranding. Copper wires in a cable can be bare or plated with a thin layer of another metal, most often tin, but also gold, silver, or other materials. Tin, gold, and silver are less prone to oxidation than copper, which can help extend the life of wires and make soldering easier. Tinning is also utilized to keep the strands moisturized. Rubber insulation was removed with the assistance of tinning. The cable is extendable (CBA – as in telephone handset cords) because tight lies during stranding.

Trunking, cable trays, cable ties, and cable lacing are all options for securely fastening and organizing cables. Strain relief devices or cable ties can be used to secure continuous-flex or flexible cables used in moving applications within cable carriers.

Current tends to run down the conductor’s surface at high frequencies. The skin effect is the term for this.

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