Part of our educational life safety series for building owners, this article explains what an emergency lighting system is, how they work, their key features and benefits and why your building legally needs one.
Emergency lighting has undergone significant technological advancement over recent decades. Early systems relied on basic incandescent bulbs powered by large lead-acid batteries, requiring frequent maintenance and offering limited operational life. Modern emergency lighting systems have evolved to incorporate LED technology, intelligent monitoring capabilities, and sophisticated battery management systems.
Contemporary systems feature self-testing capabilities, extended battery life, and improved energy efficiency. The introduction of LED technology has revolutionised emergency lighting by providing brighter illumination with significantly reduced power consumption, extending operational duration during emergencies while reducing maintenance requirements.
Emergency lighting systems function through a network of luminaires strategically positioned throughout buildings to ensure adequate illumination along escape routes, in high-risk areas, “points of emphasis” and in open spaces where occupants might congregate during evacuation.
Based on a centralised array of high-powered batteries that feeds multiple emergency lights throughout a building through cabling.
Comprising mains-powered luminaires and exit signs that switch to a battery back-up in the event of a power failure.
Based on lighting and other field devices, designed to be self-contained, i.e. they feature integral batteries to power the units during an emergency.
Regardless of type, these systems typically comprise several key components:
Lights that operate continuously, switching to emergency power when mains supply fails.
Lights that activate only during emergency situations, for example, down lights.
Specific illumination designed to clearly mark evacuation paths and corridors.
Wide-area illumination to prevent panic in large spaces and enable safe evacuation.
Illuminated directional signs designed to direct people to the nearest emergency exit.
Specialised lighting for areas where dangerous processes might need light in order to be safely shut down.
Lighting is required in areas of the building that require specific items to be highlighted during a power cut, such as firefighting equipment, changes in floor level or direction, and medical stations.
Modern systems incorporate intelligent control units that continuously monitor system status, automatically conduct regular testing, and provide detailed reporting on system performance. These controls can integrate with building management systems to provide centralised monitoring and maintenance scheduling.
Emergency lighting is a requirement under the Regulatory Reform (Fire Safety) Order 2005 (RRFSO) in all non-domestic buildings and in communal areas of HMO (houses of multiple occupancy). The purpose of emergency lighting is to illuminate emergency exits and escape paths in the case of a mains power failure. Article 14 (2) (h) of the RRFSO states that
“Emergency routes and exits requiring illumination must be provided with emergency lighting of adequate intensity in the case of failure of their normal lighting”.
Establishes the requirements for emergency lighting systems, covering design principles, installation methods, and maintenance procedures. This standard defines minimum illumination levels for different areas and specifies duration requirements for emergency operation.
Provides detailed photometric requirements, specifying exact illumination levels for escape routes (minimum 1 lux), open areas (minimum 0.5 lux), and high-risk task areas (minimum 10% of normal illumination or 15 lux, whichever is greater).
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Covers the requirements for automatic test systems, ensuring that emergency lighting systems can self-monitor and report their operational status without manual intervention.
A British Standard that provides a code of practice for emergency lighting in buildings. It outlines recommendations for the design, installation, and maintenance of emergency lighting systems to ensure safe evacuation during power outages or other emergencies. The standard covers various aspects, including minimum illuminance levels, safety sign placement, and the selection of appropriate system types based on the building's characteristics and risk assessment.
Visit our Literature page to download a soft copy of our own guide to BS 5266-1 booklet.
Correct understanding and adherence to these standards will ensure that emergency lighting systems provide adequate illumination for safe evacuation. Typically, these systems are required to provide a minimum three-hour duration of emergency operation, though specific requirements may vary based on building type and occupancy so check your local standards and codes of practice.
Contemporary emergency lighting systems incorporate sophisticated self-testing capabilities that automatically verify system functionality at predetermined intervals. These systems conduct functional tests (brief activation to verify operation) and duration tests (extended operation to verify battery capacity) without manual intervention, maintaining detailed logs of all test results.
Modern systems predominantly utilise LED technology, offering several advantages over traditional lighting: Extended operational life, often exceeding 50,000 hours, Reduced power consumption, extending battery operation time, Superior light quality with consistent colour temperature, Reduced heat generation, extending battery life, Improved durability and shock resistance
Current systems feature sophisticated battery management technology that optimises charging cycles, monitors battery health, and provides early warning of battery degradation. Lithium-ion batteries are increasingly replacing traditional nickel-cadmium units, offering improved performance and reduced environmental impact.
Advanced systems can incorporate remote monitoring through cloud technology, allowing centralised monitoring of distributed emergency lighting installations. This technology enables facility managers to monitor system status, receive immediate fault notifications, and schedule maintenance activities across multiple sites, all from a central location.
Emergency lighting systems are mandatory in virtually all commercial, industrial, and public buildings in most regions, with specific requirements varying based on building classification or local standards:
Offices, retail spaces, and shopping centres require comprehensive escape route lighting and open space lighting in large areas.
Manufacturing plants and warehouses need high-risk task area lighting in addition to standard escape route illumination.
Hospitals and care homes require extended duration systems and specialised lighting for critical areas.
European emergency lighting systems represent a crucial component of building safety infrastructure, providing essential illumination to ensure safe evacuation during emergency situations. Understanding these systems enables building owners to make informed decisions about installation, maintenance, and compliance with European safety standards.
The combination of strict regulatory requirements, advanced technology, and professional installation ensures that properly designed and maintained emergency lighting systems provide reliable protection for building occupants. As with all life safety systems, consultation with qualified professionals remains essential to ensure appropriate system design and ongoing compliance with applicable standards.
