Wire and cable are products that carry an electrical current from a power source to devices and equipment. Wire is characterized by a solid or stranded conductor protected by insulation and/or a jacket. Cable consists of one or more conductors wrapped in a sheath. The sheath binds the inner wires together, and its outer markings indicate the number of wires and size, or gauge (AWG), of wire within the sheathing. The lower the gauge, the thicker the wire, and the greater its capacity for electrical current. The color of the sheathing indicates recommended usages. Wire and cable are used in a wide range of residential, commercial, and industrial applications, including running new circuits inside building walls and ceilings, supplying temporary power to portable tools and equipment, repairing or replacing faulty wiring in automotive components, and extending electrical service underground to sprinkler systems and outbuildings.