An insulated assembly of insulated electric conductors includes a first plurality of insulated electric conductors. Each insulated electric conductor has a copper core, a uniform thickness thin sheet of aluminum that is mechanically formed to envelope the copper core and a single dielectric layer of aluminum oxide that is formed by anodizing an outer surface of the thin sheet of aluminum. A first aluminum layer is mechanically formed to envelope the first plurality of insulated electric conductors and a first single dielectric layer of aluminum oxide surrounds the first aluminum layer.