UK Building Regulations

UK Building Regulations were revised in October 2010. Part L refers to conservation of fuel and power and encompasses lighting.

The 2010 newly published approved documents & guidance notes may be downloaded here:

Part L1a - for new dwellings

Part L1b - for existing dwellings

Part L2a - for new buildings other than dwellings

Part L2b - for existing buildings other than dwellings

Domestic Building Compliance Guide 2010

Non-Domestic Building Compliance Guide 2010

Scottish Domestic Building Regs Section 6.5

Scottish Non-Domestic Building Regs Section 6.5

New dwellings must also comply with the new Code for Sustainable homes which has further requirements to Building Regulations for energy and CO² emissions

 UK Building Regulations Summary from PhotonStar's 2011 Specification Catalogue

A Summary of Part L1

  • At least 75% of fittings must be low energy, defined as

                - Efficiency greater than 45 lamp lumens/circuitW

                - Delivering at least 400lm

  • Fittings less than 5W are exempt from the total count

 

  • Fittings in infrequently accessed areas (such as cupboards) are exempt

 

  • Halogen and GLS lamps are highlighted in the guidelines as non compliant

 

All PhotonStar fittings comply, subject to the light engine choice:

 

A Summary of Part L2

  • A minimum 55 luminaire lumens/circuit Watt, averaged over the whole area for general lighting

                

  • A minimum 22 lamp lumens/circuit Watt, averaged over the whole area for display lighting

 

  • A control factor of 0.9 can be applied to the efficiency when occupancy sensors are used

 

  • A control factor of 0.9 can be applied to the efficiency when daylight sensors are used

 

  • A control factor of 0.85 can be applied when both types of controls are used

 

  • It is not necessary for individual luminaires to meet 55 luminaire lumens per circuit Watt, giving the designer flexibility to use a mix of technologies that average 55 lm/cW

 

All PhotonStar™ products exceed the requirements for display lighting, and the following light engines meet (and in many cases dramatically exceed) 55lm/cW in most fittings: