CCA Wire Copper Clad Aluminum Wire

CCA is an aluminium conductor with a thin copper coating. It is made by encasing a rod of aluminium in a layer of copper strip which is butt-welded along the seam to totally encase the aluminium. The entire rod is drawn through a series of rollers and dies to reduce the diameter to as little as 0.1mm, just over the thickness of a human hair. Aluminium is a cheaper, less conductive metal than copper and substituting CCA substantially reduces the copper content. This therefore reduces the cost of producing the cable.
CCA has some advantages over solid copper, mainly surrounding weight and cost. CCA is significantly lighter than copper, and in some applications can offer advantages in cable containment and handling. Aluminium is around a third of the price of copper and therefore offers cost savings over solid copper conductors.  Theft is also less likely with scrap values largely reduced. It also has better corrosion resistance over plain aluminium.