Lighting is one of the few building systems everyone notices. It shapes how comfortable a space feels, how safely people move through it and how well they can work. Good lighting is planned around the people and tasks in each space — not simply around the number of fittings.
Lighting design balances several goals at once: enough illuminance for the visual task, comfortable contrast without glare, colour rendering appropriate to the activity and a visual atmosphere that suits the architecture. These goals differ between a warehouse aisle, a classroom, a hotel lobby and a kitchen.
Lighting is also an electrical load and a control system. Circuit arrangement, switching zones, emergency lighting provision and future maintenance access are all decided alongside the luminaire layout. Lighting planned late, after the electrical design is fixed, often ends up compromised.
Daylight is part of the design too. Spaces with good natural light benefit from controls that reduce artificial lighting when it is not needed, while deep-plan areas depend more heavily on carefully planned artificial lighting.
General lighting provides uniform illumination; task lighting adds focused light where detailed work is done; accent lighting highlights features. Layered schemes combine all three and can be switched or dimmed separately for different uses of the same room.
External lighting supports safe movement, security and wayfinding around buildings, car parks and paths. It requires weather-resistant luminaires, protected cable routes, suitable earthing and controls such as photocells or timers, while limiting light spill onto neighbouring properties and the night sky.
Offices, shops and workshops need lighting that supports concentration and reduces fatigue. Glare control is important around screens, vertical illuminance matters for faces and displays, and high-bay industrial spaces need luminaires suited to mounting height and environment.
LED luminaires have become the standard choice for most new installations and many replacements. Comparing them with older light sources helps explain why — and what to look for when selecting them.
The actual performance of an LED luminaire depends on its driver, thermal management and optical design. Comparing manufacturer data such as luminous efficacy, rated life, colour rendering and flicker characteristics gives a more reliable picture than wattage alone.
Architectural lighting works with the form and materials of a building. Grazing light emphasises texture on stone or brick, washing light makes walls feel brighter and spaces larger, and concealed linear lighting can define ceilings, stairs or façades.
These effects place specific demands on the electrical design: concealed driver locations with maintenance access, suitable cable routes within the building fabric and compatible control systems. Colour temperature and colour rendering should be consistent across fittings to avoid patchy results.
Sensors switch or dim lighting according to occupancy. Absence detection — manual on, automatic off — suits offices and meeting rooms, while presence detection suits corridors, stores and washrooms.
Photocells measure available daylight and dim luminaires near windows so the combined light level remains steady. This requires luminaires and drivers that support smooth dimming.
Timers and scene controllers set lighting for opening hours, cleaning, events or presentations. Outdoor lighting is often combined with astronomical clocks that follow sunrise and sunset.
Addressable systems allow individual luminaires to be grouped, monitored and reprogrammed without rewiring. They can report faults and integrate with building management systems in larger installations.
Lighting circuits need protection sized for the inrush current of LED drivers, which can be significantly higher than their running current when many luminaires switch on together. Emergency luminaires require their own testing regime, and outdoor luminaires need correct ingress protection and sealing.
Maintenance includes cleaning optics, checking mounting and connections, verifying control functions and testing emergency lighting. Planning access — for high ceilings, atria or façades — at the design stage avoids costly equipment later. See also electrical maintenance.
Tell us about the space, how it is used and any existing fittings or controls. Floor plans or photos help when describing the project.