| LIGHTING DESIGN CONSIDERATIONS Current legislation and design increases the attraction of using central battery systems to provide emergency lighting in a industrial building. In particular, an increase in the use of static inverter systems, which provide an alternative source of power to normal mains luminaires. These considerations can be summarised as follows: 1. BS 5266 part 7 (EN1838) specifies increased emergency light levels than previous standards 2. Slave luminaires, operating from AC/DC and AC/AC central systems, offer a higher light output and improved spacing characteristics over comparable self-contained versions of the same luminaire 3. Compact fluorescent lamps make ideal slave luminaires, offering high efficiency and appropriate light output for areas with low ceilings 4. There is an increasing requirement from architects and users to make emergency lighting as unobtrusive as possible, so utilisation of the normal mains luminaires is an ideal solution Through the use of dedicated slave luminaires and conversion modules for mains fluorescent luminaires, these considerations can be catered for by both AC/DC and AC/AC central systems. An illustration of the increased output that can be expected from 8W slave luminaires compared to self-contained versions is shown in figure 1. |