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:
New dwellings must also comply with the new Code for Sustainable homes which has further requirements to Building Regulations for energy and CO² emissions
2013 amendments to the building regulations; what about lighting?
DCLG made some changes to the Building Regulations in December 2012 including amendments to Part L, which encompasses lighting, to implement the recast Energy Performance of Buildings Directive (EPBD). The decision was made not to update the current ADLs and the latest ADLs are therefore dated 2010 with further 2010 or 2011 amendments.
On the wider Part L changes to strengthen standards, there have been no decisions/announcements as of yet. DCLG will publish a detailed plan, setting out its response to the 2012 consultation on the energy efficiency requirements in building regulations, by May 2013, with the intent to publish new 2013 ADLs towards the end of the year.
PhotonStar will keep you updated on future Part L changes as they are published.
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: