Emergency lighting is designed to illuminate automatically the emergency escape route (i.e. staircases, landings, passageways etc.) upon failure of the supply to the normal artificial lighting. The emergency lighting must comply with BS 5266: 2005. It is vital that emergency lighting comes on if the normal lighting fails. It needs to be sufficiently bright, illuminated for enough time, and the light sources so positioned that the staff and visitors of a building can be evacuated safely in an emergency
Siting of Luminaires
Luminaires should be sited in the following positions:
- At each exit door
- At each intersection of corridors
- At each change of direction
- Close to each staircase
- Close to any change in floor level
- Close to fire equipment and alarm call point locations
- At locations that adequately illuminate emergency escape and safety signs
Maintained & Non-maintained Systems.
Non-maintained systems are used in buildings with a limited occupation time, such as offices and shops, and only operate when the power fails. In general, Maintained systems are required for places of entertainment and licensed premises and can be on all the time from normal mains supply, remaining on when the power fails.