An electrical wire comprises a central Aluminum wire, wherein the central Aluminum wire is surrounded by at least one Copper wire and the aluminum wire and the copper wire are uncoated such that the Copper wire is in direct contact with the central Aluminum wire. 3-23% by volume of the electrical wire is made of Aluminum and the rest is made of Copper. At least one of the central wire and the surrounding wire has a purity of at least 95% to provide a high degree of contact between Aluminum and Copper.