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CCL Commissioning Code L: Lighting (2018)
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CCL Commissioning Code L: Lighting (2018)

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Lighting installations are becoming increasingly complex. This is largely due to the evolution in recent years of leds as the most common light source, which in turn has increased the range of luminaire types and styles available to architects and lighting designers. The technologies used in lighting controls are also evolving and now often form an intrinsic part of the lighting installation. This advancement of technology can create a complex commissioning requirement to ensure that projects are delivered as per the design intent. There are also lighting energy consumption compliances that require verifying as part of commissioning, rather just reliance on design modelling in the early stages of the design.

This updated edition of Commissioning Code L provides guidance on how to set up a commissioning plan for a project in order to manage the process of ensuring that the design intent is realised at project completion and that the users of the lighting installation are fully aware of the operation and benefits of the lighting installation, relative to their use of the building.

The Code advises on the stages required to commission lighting installations, which may include luminaires, emergency luminaires, lighting controls and interfaces with other services.

The Code represents standards of good practice, which are presented in the form of recommendations and guidance for the building services industry.

The Code covers the commissioning of interior and some forms of exterior lighting systems. It should be noted that the specific commissioning checks that may be associated with highways lighting, sports lighting and public space exterior lighting are not covered in this Code.

Supplementary files:

The Code contains a number of Checklists and Sample Completion Certificates. Versions of these, in Word format, are made available here using the following links to aid your use of them: 


L0 Introduction

L0.1 Scope

L0.2 Purpose

L0.3 The importance of commissioning

L0.4 Safety

L0.5 Lighting installation commissioning

L1 Commissioning project management

L1.1 Forming a commissioning management team

L1.2 Commissioning activities

L1.3 Commissioning method statements

L1.4 Commissioning programme of works

L2 Pre-commissioning checks

L2.1 General considerations

L2.2 Status of the lighting installation

L2.3 Pre-commissioning certificate

L3 Functional commissioning

L3.1 Interior lighting

L3.2 Emergency lighting

L3.3 Exterior lighting

L3.4 Lighting controls

L3.5 Relationship between lighting and automatic solar shading

L3.6 Measurement of illuminance

L3.7 Proving interfacing with other services

L3.8 Visual inspection

L3.9 Functional commissioning certificate

L4 Lighting installation handover

L4.1 O&M media

L4.2 Witnessing testing

L4.3 Operator training

L4.4 Commissioning completion certificate

L5 Post-occupancy checks and adjustments


Appendix LA1: Commissioning relative to the RIBA Plan of Work

Appendix LA2: Checklists for the commissioning of lighting installations

Appendix LA3: Hypothetical examples of lighting installation commissioning

Appendix LA4: Sample completion certificates

Appendix LA5: Glossary of terms

Author: Sophie Parry (Zumtobel Group)

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