Resources

LED Lighting Knowledge Base

Expert guides and technical resources from EOS — helping architects, specifiers and contractors make informed lighting decisions.

Controls

What is DALI Lighting?

DALI (Digital Addressable Lighting Interface) is the global industry standard for digital lighting control. This guide explains how DALI works, the benefits of …

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Controls

Tuneable White Lighting Guide

Tuneable white (also called tuneable CCT or human centric lighting) allows the colour temperature of LED luminaires to be adjusted dynamically — from warm 2700K…

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Sustainability

TM66 Circular Economy Lighting

TM66 is the CIBSE Technical Memorandum that provides a standardised method for assessing the circular economy credentials of luminaires. It measures how well a …

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Technical

Lux Levels Guide

Lux is the standard unit of illuminance — the amount of light falling on a surface. This guide covers the recommended lux levels for common commercial, industri…

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Technical

IP Ratings Explained

IP (Ingress Protection) ratings classify the degree of protection a luminaire provides against solid objects (dust) and liquids (water). Understanding IP rating…

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Design

How to Light an Office

Never has the need for great office lighting been more imperative. This guide covers five practical steps to creating inspirational workplace lighting — schemes…

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Design

How to Light a Living Wall

Living walls — vertical greening typologies where a built structure is intentionally covered by vegetation — have become a staple of biophilic design in offices…

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Sustainability

LED Retrofit Guide

Converting existing lighting to LED — an LED retrofit — is a win-win on many levels. EOS has become known as the 'retrofit team' for many customers, taking on p…

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Technical

IK Ratings Explained

IK ratings classify the degree of protection a luminaire provides against mechanical impact. Understanding IK ratings is essential for specifying robust, long-l…

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Design

How to Light a Classroom

Getting classroom lighting right has a measurable impact on student performance, concentration and wellbeing. This guide covers the UK regulatory framework, rec…

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Design

How to Light an Urban Landscape

Urban landscape lighting shapes how people experience public spaces after dark — affecting safety, wayfinding, wellbeing and the identity of a place. This guide…

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Design

How to Light a New Build Estate

Lighting new build residential estates involves navigating a unique set of UK regulations — from highway adoption standards and Secured by Design to Part L ener…

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Design

How to Light a Warehouse

Warehouse lighting directly affects productivity, safety, pick accuracy and energy costs. This guide covers the UK regulatory requirements, luminaire selection,…

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Design

How to Light a Multi-Storey Car Park

Multi-storey car parks (MSCPs) present unique lighting challenges — low ceiling heights, aggressive environments, 24/7 operation and the need to balance driver …

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Controls

Wireless Lighting Controls & EOS Plexus™

Wireless lighting controls eliminate the need for dedicated control wiring, making intelligent dimming, scene-setting and occupancy-based switching achievable i…

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Terminology

What is a Lumen?

A lumen (lm) is the SI unit of luminous flux — it measures the total quantity of visible light emitted by a source. Understanding lumens is essential for specif…

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Terminology

What is Illuminance?

Illuminance is the measure of how much luminous flux (light) falls on a given surface area. Measured in lux (lx), it is the primary metric used in UK lighting d…

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Terminology

What is UGR?

UGR — Unified Glare Rating — is a standardised metric that quantifies the degree of discomfort glare experienced by occupants from luminaires in an interior spa…

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Terminology

What is Colour Temperature?

Colour temperature describes the appearance of white light emitted by a source, measured in Kelvin (K). It determines whether light appears warm (yellowish) or …

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Terminology

What is CRI?

CRI — Colour Rendering Index — measures how accurately a light source reveals the true colours of objects compared to natural daylight. A higher CRI means colou…

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Terminology

What is Luminous Efficacy?

Luminous efficacy measures how efficiently a light source converts electrical energy into visible light. Expressed in lumens per watt (lm/W), it is the single m…

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Terminology

What is Non-Maintained Emergency Lighting?

Non-maintained emergency lighting refers to luminaires that only illuminate during a mains power failure. They remain off during normal operation and activate a…

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Terminology

What is Beam Angle?

Beam angle is the angle between the two points on opposite sides of a light beam where intensity falls to 50% of the maximum (peak) intensity. It determines how…

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Terminology

What is an LED Driver?

An LED driver is an electronic device that regulates the power delivered to LEDs. It converts mains AC voltage to the precise DC current and voltage required by…

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Terminology

What is Flicker-Free Lighting?

Flicker refers to rapid, repetitive changes in light output from a luminaire. While often invisible to the naked eye, flicker can cause headaches, eye strain, r…

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Sustainability

BREEAM Lighting Credits Guide

BREEAM (Building Research Establishment Environmental Assessment Method) is the world's leading sustainability assessment for buildings and is the de facto stan…

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Technical

Part L Building Regulations & Lighting

Approved Document Part L of the Building Regulations sets minimum energy performance standards for buildings in England. For commercial lighting, Part L 2021 (C…

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Technical

Emergency Lighting Testing Requirements

Emergency lighting is a life-safety system and its regular testing is a legal requirement under the Regulatory Reform (Fire Safety) Order 2005. BS 5266-1 specif…

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Technical

IP Rating Guide for LED Lighting

The Ingress Protection (IP) rating is a two-digit code defined by BS EN 60529 that indicates how well a luminaire enclosure is protected against the intrusion o…

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Sustainability

LED Lighting & Energy Performance Certificates

Energy Performance Certificates (EPCs) rate the energy efficiency of commercial buildings from A (most efficient) to G (least efficient). Since April 2023, the …

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Design

Lighting Design Calculations Explained

Lighting design calculations translate a client's brief into a precise specification — determining how many luminaires are needed, where they should be position…

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Technical

ATEX & Hazardous Area Lighting Guide

Hazardous areas — locations where flammable gases, vapours, mists or combustible dusts may be present — require specially certified luminaires designed to preve…

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Technical

UKCA Marking for LED Lighting

Following the UK's departure from the European Union, the UKCA (UK Conformity Assessed) mark has replaced the CE mark as the conformity marking for products pla…

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Technical

Emergency Lighting Batteries: NiCd to Lithium

For decades, nickel-cadmium (NiCd) batteries were the default choice for self-contained emergency luminaires. That era is ending. The EU Battery Regulation (202…

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Technical

What is a Stretch Ceiling?

A stretch ceiling is a suspended ceiling system made from a lightweight, flexible membrane — typically PVC-based — that is stretched and secured within a perime…

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