The Copper Clad Aluminum Wire is made of a solid aluminum core and covered with a copper skin to improve its performance in the field.

In fact, through the wire cutting process, a small amount of copper coating is applied to the ends of the cut wires, you may notice the lower edge of the cutting edge above the "COR" in the word "CORE".

The copper clad aluminum wire consists of a solid aluminum core covered with a thin copper clad. About 10% of the cross-sectional area of the conductor is copper clad, and the thickness is not specified. This product is used in standard pure copper wiring equipment, namely switches, sockets (terminal screws, reverse wiring, and pressure plate terminals), and is regarded as an "aluminum" conductor for aluminum-copper pressure wire connectors to cope with solid cores Field failure of aluminum conductor branch circuit wiring.

The main application of this conductor revolves around weight reduction requirements. These applications include high-quality coils, such as voice coils in headphones or portable amplifiers; high-frequency coaxial applications, such as RF antennas and cable television distribution cables; and power lines.

CCA is also used for the electrical wiring of buildings. The copper/aluminum structure is obtained by avoiding some of the problems with aluminum wires, but still retains most of the cost advantages. In the United States, solid copper is most commonly used for 120 V or 240 V wiring inside houses. CCA can also be seen in unshielded twisted pair network cables. These cables are generally cheaper than copper magnet wire.