In today’s age with everything being electrical, just about all wiring and cables from the category 3 wire to the category 5 or 5e wire to the cat 6 wire, they all are made of copper. Back in 1964, the use of copper spool wire was only 69% and today it is used in over 93% of its applications. From sata a telephone, to a lamp, to the largest run network of computers, copper spool wire has been the choice. There is new uses of fiber optic wire arising but copper spool wire is still used due to the price and its reliability.