Electrical wire carries an electric current or grounds an electrical device. The wire has a maximum operating temperature of 1177 degrees C (2150 degrees F), is corrosion resistant, and resists oxidation at high temperatures.0159" Diameter, Silver Wire can be composed of a single strand or of many smaller strands, depending on its use, and is typically annealed to improve its ductility. Copper is the primary material for electrical wire, but alloys are sometimes used to increase its strength or its resistance to chemicals and the environment.