Electric cables are essential components used to transmit electrical power and signals. They consist of one or more conductors, usually made of copper or aluminum, which are insulated to prevent short circuits and protect against environmental factors. The insulation material can vary, including rubber, plastic, or other compounds, depending on the cable's intended use. These cables come in various types and sizes, designed for different applications, such as residential wiring, industrial machinery, or telecommunications. Common examples include power cables, data cables, and fiber optic cables, each serving specific functions in delivering electricity or information efficiently and safely.