the development of the electric installations of buildings is based on the application of the rules and technical norms of the specialty; the quality of the supply of energy and illumination has had importance increased in the conception of these installations as well as its integration with the engineering of telecommunications, avac and security.

the name electricity cames of the greek elektron that means amber; the brain sends messages, carried for electric energy by the nervous cells; the caffeine speeds up the transmission of impulses in the central system, that lead about two thousandth of second to make the chemical passage between neurotransmitters.