Electric distribution and control for lighting systems

Higher illumination levels and new lighting sources make it necessary to re-examine possible methods of power distribution and control for lighting loads. As a result of the higher lighting load densities and versatile lighting sources, the designer must now exercise a considerable amount of engineering judgment in planning the distribution system. New design techniques make it possible to provide maximum convenience and reliability at minimum cost and with a minimum use of critical materials. The purpose of this paper is to discuss some of the requirements of the different lighting sources and analyze the modern trends in power distribution and control for lighting loads.