Master emergency lighting design — from classification and duration to luminaire selection, testing regimes, and common installation pitfalls.. Why Emergency Lighting is Critical Emergency lighting provides illumination when the normal lighting supply fails, enabling safe evacuation and facilitating firefighting operations. BS 5266 1:2016 'Emergency lighting — Code of practice for the emergency lighting of premises' provides the design framework. Types of Emergency Lighting Escape Route Lighting Illumination of defined escape routes to enable safe movement to exits: Minimum 1 lux on the centre line of escape routes 50% of that on the central band (half the route width) Uniformity ratio not exceeding 40:1 Open Area (Anti Panic) Lighting Illumination of large open areas ( 60m²) to prevent panic: Minimum 0.5 lux across the core area Excluding 0.5m perimeter band High Risk Task Area Lighting Maintaining lighting for potentially dangerous processes: Minimum 10% of normal illuminance or 15 lux (whichever is greater) Immediate activation (within 0.5 seconds) Standby Lighting Lighting to enable normal activities to continue during mains failure. Duration Requirements Building Type Minimum Duration Buildings with sleeping risk 3 hours Licensed premises 3 hours All other premises 1 hour Note: Where emergency lighting is provided for the fire service (firefighting access), 3 hour duration is typically required. Luminaire Types Self Contained Battery and charger integral to each luminaire Most common type for smaller installations Individual failure doesn't affect other luminaires Monthly and annual testing required per luminaire Central Battery Centralised battery powering multiple luminaires Easier monitoring and testing More cost effective for large installations Single point of failure risk (mitigated by system design) Maintained vs Non Maintained Maintained — operates on mains AND in emergency (required in entertainment venues) Non maintained — operates only when mains supply fails Sustained — luminaire with two lamps, one maintained, one non maintained Testing Requirements Monthly Tests Brief functional test of each luminaire (simulated mains failure) Duration sufficient to check lamp operation (typically 1 3 seconds for self contained) Record results in logbook Annual Full Duration Test Complete discharge test for full rated duration (1 or 3 hours) All luminaires must remain illuminated for the full period Recharge time typically 24 hours Plan test timing to avoid operational disruption Automatic Test Systems Modern systems offer automated testing: Self test luminaires performing monthly and annual tests automatically Central monitoring systems reporting results electronically DALI based addressable emergency lighting with remote monitoring Significant reduction in manual testing burden Common Design Pitfalls 1. Missing coverage at direction changes and intersections 2. Insufficient illumination at stairway treads 3. No emergency lighting in lift lobbies and toilet facilities 4. Luminaires positioned too high for effective illumination 5. Exit signs not visible from required viewing distances 6. Fire alarm system not configured to activate emergency lighting 7. Inadequate provision for disabled refuge areas Our Emergency Lighting Services Magnus Opifex SEVEN LTD includes emergency lighting design in our comprehensive fire safety strategies. We ensure emergency lighting provisions integrate seamlessly with the overall fire safety design, providing compliant illumination that supports safe evacuation and firefighting operations. Magnus Opifex SEVEN LTD — UK's Leading Fire Safety & Fire Engineering Consultancy 🌐 magnus opifex.co.uk 📞 +44 7486 691724 ✉️ office@magnus opifex.co.uk Founders: Nicoleta Vasile, Baroness of Brattleby — CEO, Lawyer and Barrister, Legal & Administrative Director Alina — Technical Director & Expert Fire Engineer (BEng) Head Office: Ealing Cross, 85 Uxbridge Road, London W5 5BW Magnus Opifex SEVEN LTD delivers engineering led fire engineering, fire risk assessments, CFD modelling, and building safety consultancy across the United Kingdom and internationally. With over 20 years of combined experience and a UK portfolio spanning healthcare, residential and infrastructure, we bring truly engineered solutions with a personal touch. © 2026 Magnus Opifex SEVEN LTD. All rights reserved.