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:
- Titan
- Mercury
- Venus
- Aries
- Jupiter
- SmartWhite
- SmartJupiter
- SmartNemesis and LEDsmart Controls attract the control factors when installed in eligible areas
