Electrical cable

An assembly of one or more insulated conductors, usually enclosed in a protective sheath, that carries electrical power or signals.

Electrical conductor: A material or component that permits electric charge to flow through it. The conductor forms the cable’s current-carrying core.
Electrical resistance: The opposition a material or component presents to electric current. Conductor resistance causes voltage drop and heat along a cable.
Power cable: An electrical cable designed to transmit electrical power. Power cables carry energy from generation and distribution systems to equipment.
Electrical wire: A single electrical conductor, bare or insulated, used to carry current or signals. A cable contains one or more conductors assembled with insulation and often a sheath.
Electrical safety: Practices and design principles that reduce harm from electrical energy. Insulation, grounding, and correct cable ratings help prevent shock and faults.
Electrical insulation: A material or system that resists electric current between separated conductive parts. Insulation prevents current from escaping the conductor or reaching adjacent cores.
Voltage drop: The decrease in electric potential between two points as current flows through a circuit. Cable resistance produces voltage loss between the supply and the load.
Coaxial cable: A cable with a central conductor, surrounding dielectric, and concentric outer conductor. Its geometry supports shielded radio-frequency and broadband signal transmission.
Busbar: A rigid conductive bar used to distribute electrical power within equipment or installations. Busbars replace flexible cables in many high-current, fixed distribution layouts.
Grounding: Connecting an electrical system or conductive enclosure to earth or a reference conductor. Protective grounding provides a fault-current path for many cable installations.

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Electrical wiringBroader topic: Cables bundle and protect conductors along many building wiring routes.