Emergency Lighting

Emergency lighting, a self-descriptive term, is lighting for an emergency situation when the main power supply fails. The loss of mains electricity could be the result of a fire or a power cut and may lead to sudden darkness and a possible danger to the occupants, either through physical danger or panic.

Emergency lighting is normally required to operate fully automatically and give illumination to a sufficiently high level to enable occupants of all ages to evacuate the premises safely. Most new buildings now have emergency lighting installed during construction.


The emergency light is only illuminated upon interruption of the mains supply.


The emergency light uses the same source for both modes and is usually switched on and in emergency mode.


The emergency light has a separate light source for both mains and emergency mode.