ABSTRACT
Illumination and the design of lighting layouts is a subject on its own. There are books dealing comprehensively with it and it is not proposed to condense the matter into a single chapter here, but once a lighting layout has been arrived at, it is necessary to design the circuits, wiring and protection for it; this is an aspect of lighting design which tends to be overlooked in books on illumination and which we propose to discuss in this chapter. The electrical requirements of a lighting system depend to a considerable extent on the kind of lamps used and we shall describe the different available types in turn.
