The structure of power cables isn't overly complex, but it's not as simple as it may appear on the surface. A closer study of power cables reveals that there are still aspects of their structure that require understanding.

The structure of power cables mainly includes the outer sheath, inner sheath, and conductors. Common transmission conductors are metal wires made of copper and aluminum.

Wires are conductors used for transmitting electrical energy. They are categorized into bare wires, electromagnetic wires, and insulated wires. Bare wires do not have an insulating layer and include copper and aluminum flat wires, overhead braided wires, as well as various shapes (such as profile wires, busbars, copper bars, aluminum bars, etc.). They are mainly used for outdoor overhead and indoor busbars and switchboxes. Electromagnetic wires are insulated conductors that produce a magnetic field when an electric current passes through them or induce a current in a magnetic field.