BS 5266-4:1999 gives recommendations and guidance on the design, installation, maintenance and use of optical fibre emergency lighting systems. It is applicable to optical fibre emergency lighting systems for escape route lighting, including open area lighting. It is also applicable to optical fibre systems used for standby lighting when the system is also used as part of the emergency escape route lighting.
NOTE. This Part is to be used in conjunction with BS 5266 : Part 1 and BS 5266 : Part 5.