Copper clad aluminium is an electrical conductor which has outer sleeve of copper bonded to a solid aluminium core using high frequency welding.cca wire has the characteristics of both copper wire and aluminium wire low density from aluminium wire & good conductor from copper wire. aluminium is very flixible and light in weight, and when clad in copper, provides excellent conductivty at a significant savings over copper alone. Copper clad aluminium wire is produced with production process of cladding welding drawing method. By cladding copper strip concentrically on the outer surface of the aluminium core. To meet customer’s requirement wire is treated & drawn several times. Bimetallic wire suitable most electrical applications. In standard reels