Study of this chapter will enable the reader to:

explain the use of day and artificial lighting;

use lux and lumen;

state normal lighting levels;

explain general and task illumination;

understand permanent supplementary artificial lighting of interiors (PSALI);

understand artificial lighting terminology;

assess the importance of the maintenance of lighting installations;

calculate the room index;

discuss the problem of glare;

calculate the number of lamps needed to achieve a design illumination level;

calculate lamp spacing for overall design;

calculate the electrical loading produced by the lighting system;

understand the use of air-handling luminaires;

understand lamp colour-rendering and colour temperature;

know the range of available lamp types;

understand the working principles of lamp types and their starting procedures.