A 4-core wire is an electrical cable that contains four individual conductors, each encased in insulation. These wires are often used for applications that require more complex wiring, such as three-phase power systems, certain lighting controls, and industrial equipment, where additional wiring is needed for both power and control. Four Conductors: The cable contains four separate cores, color-coded to distinguish their functions. Common colors include brown (live), black (second live/phase), gray (third live/phase), and green/yellow (earth/ground), though color codes may vary by region.Insulation: Each core is insulated with a protective material, and the entire set of wires is encased in an outer sheath for added durability and protection from environmental exposure.Materials: made from copper for high conductivity and reliability