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Emergency lighting


Phil Duignan

on 14 December 2009

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Transcript of Emergency lighting

An emergency light is a battery-backed lighting device that comes on automatically when a building experiences a power outage and maintains a constant level of light for a 3 hour period. Emergency lighting MAINTAINED The emergency light units are illuminated at all times using the same lamps for both normal and emergency operation. NON-MAINTAINED The emergency light units only illuminate in the event of a mains failure. An emergency luminaire will either be a self-contained type, i.e. with all components integral to the luminaire body or locally sited (battery, charging circuit, mains ballast etc). Or "slave" to a central battery system where only the lamp (and gear if required) is located within the luminaire body and the supply on power failure is fed from some centralised point.

The majority of systems installed in the United Kingdom are of the self-contained type, but both options have their own advantages and disadvantages. BS5266 Pt 7/EN1838 - 4.3 recommends the provision of horizontal illumination of a defined escape route (permanently unobstructed) not less than .2 lux and .5 lux minimum for open areas excludeding a 0.5 metre border around the room.
For escape routes of up to 2m wide, 50% of the route width should be lit to a minimum of 1 lux.
How much light does one need in a panic? The actual degree of illumination should be closely related to the nature of both the premises and its occupants with special consideration being given to old person’s homes, hospitals, crowded areas such as pubs, discos and supermarkets, and to whether or not the premises are residential. wHERE?!
each exit door
escape routes
intersections of corridors
outside each final exit and on external escape routes
emergency escape signs
stairways so that each flight receives adequate light
changes in floor level
windowless rooms and toilet accommodation exceeding 8m2
firefighting equipment
fire alarm call points
equipment that would need to be shut down in an emergency
lifts and areas in premises greater than 60m2.

It is not necessary to provide individual lights (luminaire) for each item above, but there should be a sufficient overall level of light to allow them to be visible and usable.
Lumino & emergency lighting When asked to provide fittings converted for emergency use;

- Try and avoid having to supply them ready converted where possible.
- When supplying converted Prolicht fittings request and compare prices to Lightplans, they can be competitive and it reduces a lot of hassel for us.
- Protect yourself from cowboys; Make all tech info available and detial the quotes with full descriptions of what you intend to supply. Cover yourself..

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