Coaxial cable conducts electrical signals using an inner conductor (usually a solid copper, stranded copper or copper-plated steel wire) surrounded by an insulating layer and all enclosed by a shield, typically one to four layers of woven metallic braid and metallic tape. Coaxial cable, or coax (pronounced / ˈkoʊ. Its construction features two conductors running concentrically along the cable's axis, a design that has served various technological needs over the decades. Although the advent of. What Are the Parts of a Coaxial Cable? Structure, Materials, and Use Cases Explained Coaxial cables are everywhere in modern communication — from cable TV and satellite to RF and industrial automation. It typically has a single jacket color and is more uniform than multi-core cables. Its history dates back to 1880 when it was invented by Oliver Heaviside.