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What's the difference between cable and wire? Be specific.

A cable is a combination of one or more wires, with an outer protective layer and possibly filler, insulation and protective materials. What we usually call (externally insulated) wires also belong to the category of cables.

The meaning of electrical wiring is much broader. It refers not only to the conductors of various electrical connections in the system, but also to various wires and cables, conductors with various cross-sectional shapes, gaps or insulation, or their combinations. In a broad sense, it can also refer to the construction process of electrical wiring.