Enameled copper-clad aluminium wire (ECCA) is an enameled wire composed of an inner aluminium core and outer copper cladding with insulation materials.
Enameled copper-clad aluminium wire applications include high-quality coils, such as the voice coils in headphones or portable loudspeakers; high frequency coaxial applications, such as RF antennas and cable television distribution cables; and power cables.
The copper/aluminium construction was adopted to avoid some of the problems with aluminium wire, yet retain most of the cost advantage.
Enameled copper-clad aluminium wire – Properties
The properties of copper-clad aluminium wire include:
Less expensive than a pure copper wire
Lighter than pure copper
Higher electrical conductivity than pure aluminium
Higher strength than aluminium
Electrical connections are typically more reliable than pure aluminium[citation needed]
Typically produced as a 10% or 15% by copper volume product
Enameled copper-clad aluminium wire Structure
