Wires and cables consist of four main components: the conductor, the insulation layer, the shielding layer, and the protective layer.
Conductor
The conductor is the current-carrying component used to transmit electrical energy; it is the primary part of the wire or cable.
Insulation Layer
The insulation layer electrically isolates the conductor from the ground and from conductors of different phases, ensuring the transmission of electrical energy; it is an indispensable part of the wire or cable structure.
Shielding Layer
Wires and cables rated at 15 kV and above generally feature both a conductor shield and an insulation shield.
Protective Layer
The function of the protective layer is to shield the wire or cable from the ingress of external impurities and moisture, as well as to prevent direct physical damage from external forces.
