The term wire initially described a nautical line of specific size where multiple ropes are combined to create a strong thick line that was used to anchor huge ships. As electrical innovation created, people changed from making use of bare copper cable to using groups of wires and also various sheathing and also shackling techniques that appeared like the mechanical cabling so the term was adopted for electrical wiring. In the 19th century and also very early 20th century, electrical cable was usually insulated using towel, rubber or paper. Plastic products are typically used today, except for high-reliability power line. The term has also come to be connected with communications due to its use in electrical interactions.