Guide to emergency lighting



Allows you to continue with your activity in the absence of normal lighting.



Illuminates and indicates the exit paths within a place that guide you until you reach a safe area.
• pictogram on a green background which must coverat least 50% of the surface area
• it must be rectangular or square
• its dimensions must be adequate enough to ensure clear visibility
• the message must be clear, immediate and respect EN 1838 and ISO 7010 regulations
Backlighting (in contrast to external lighting) allows for greater visibility of the pictogram both in normal conditions as well as in the absence of normal lighting. Ceiling lights can be either maintained (M) or nonmaintained (N/M). The latter may be sufficient in places which are lit normally.
The visual range, according to EN 1838, is calculated with the formula L = z x h
z is a constant with 100 for signs lit externally, 200 for those back-lit.
A back-lit sign with height of 16 cm will be visible at a distance equal to 200 times h, i.e. 32 metres.
The same sign lit externally will have visibility equal to 100 times h, i.e. 16 metres.
Only the height of the pictogram defines its visibility, not its length.


High-risk activities
Allows workers to stop performing dangerous operations through the use of correct procedures.
The safety lighting for high-risk activities must be 10% of the normal lighting, or at any rate a minimum value of 15 lux. In addition, uniform lighting with ratio between maximum and minimum no greater than 10 is required.


Limits the risk of panic caused by sudden darkness.
The minimum illumination required, without taking into consideration wall reflections, is 0.5 lux on the ground over the entire area excluding a 50 cm perimeter strip.
For the purposes of uniformity, the ratio between maximum and minimum illumination must not exceed a value of 40.
This information was updated in compliance with EN 1838:2013.


Arrangement of the luminaire devices
• near to every emergency door
• near to every flight of stairs wich must receive direct light
• near to every change in level
• on the safety signs on the exit routes lit externally
• at every change in direction
• at every corridor crossing
• at every safe place in which individuals converge outside the emergency exit
• near to every first-aid site, 5lx
• near to every fire fighting device and calling point, 5lx
• near to every evacuation device for the disabled
• near to shelters and collection points for the disabled
• near to the wc for the disabled
(near means within 2 m)