Phelps Dodge a World Leader in Wire and Cable Technology. Building wires are used in the construction of almost every commercial, industrial, and residential property in the world. Most commonly known as branch circuit wiring in homes and businesses, these products carry electrical current to all external uses of power in a building or dwelling. With the state-of-the art manufacturing technologies at Phelps Dodge International (Thailand), our building wires are widely perceived as a superior quality products for safety of people in a building or dwelling.