Electricians, often referred to as 'WIRES', are professionals who specialize in the installation and maintenance of electrical systems. They are responsible for the wiring of buildings, machines, and other electrical equipment. Electricians must be knowledgeable in the principles of electricity, safety regulations, and local building codes. They must also be able to read blueprints and diagrams, and use a variety of tools and testing equipment. Electricians are highly skilled workers who are essential to the functioning of modern society.