• • • LIGHTING • • •
• Wall-mounted bulkheads and sconces: Ideal for illuminating entrances, façades and patios.
• Bollards: The standard choice for pedestrian routing, driveways and landscaped pathways.
• Floodlights: For expansive areas like car parks, logistical yards, or security-sensitive locations, floodlights with asymmetric or symmetric distributions provide optimal coverage and required illuminance.
• In-ground luminaires: Provide low-glare guidance lighting along steps and borders.
• Catenary or festoon systems: Specified for decorative, ambient applications.
CCT and Luminous Flux Luminous flux and Correlated Colour Temperature (CCT) are equally crucial. Specifiers must select luminaires that deliver the requisite lux levels or integrate dimmable drivers for operational flexibility. Ambient seating areas require lower- intensity, softer lighting, whereas commercial access points demand higher functional illuminance.
CCT also plays a significant role in ecological impact. Warmer colour temperatures, typically 3000K or lower, are highly recommended for exterior environments, as they scatter less in the atmosphere and have a reduced impact on nocturnal wildlife compared to blue-rich, cooler hues.
Environmental resilience is another important factor to consider. Exterior luminaires are exposed to harsh conditions, therefore, specification should mandate robust materials, such as die-cast marine-grade aluminium, stainless steel, or UV- stabilised polycarbonate, accompanied by appropriate Ingress Protection (IP) and Impact Protection (IK) ratings.
Energy efficiency and smart controls
Rising energy costs and strict carbon reduction targets means energy efficacy is a dominant driver in specification.
Modern LED luminaires consume approximately 85 per cent less electricity than legacy incandescent sources, while standalone solar- powered luminaires can eliminate grid reliance entirely during summer months. Integrating presence detection (PIR or microwave sensors) and photoelectric cells (PECs) automates the system, ensuring luminaires are only energised when required by occupancy or low ambient daylight levels.
Where budget permits, integrating smart or networked lighting is a must. By automating enabling factors such as operational schedules, dimming profiles and CCT tuning, an optimised control strategy can reduce exterior lighting energy consumption by up to two-thirds. Although exterior lighting installations can initially appear complex, successful schemes ultimately rely on rigorous upfront planning. By fully understanding the brief, selecting the appropriate luminaires based on photometric data and integrating intelligent control strategies, engineers can deliver systems that perfectly balance aesthetics, safety and sustainability.
https://ansell-lighting.com/en
electricalengineeringmagazine.co.uk
ELECTRICAL ENGINEERING • MARCH 2026 31
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