The National Electrical Manufacturers Association (NEMA) has published LE 6-2009 Procedure for Determining Target Efficacy Ratings for Commercial, Industrial and Residential Luminaires. The document, produced by NEMA’s Luminaire Section, was last published in 2008.
LE 6 provides a procedure for the determination of the target efficacy rating (TER) for light fixtures under laboratory test conditions and describes categories or types of products used in common indoor and outdoor lighting applications. It does not apply to fixtures for specialized applications such as products intended to be aimed, accent luminaires, rough or hazardous use luminaires or emergency lighting. It is recommended to be used only as a guide to help in the selection of luminaires since TER does not address application characteristics such as color, uniformity, glare, or other important considerations.
The 2009 revision includes updates to the calculation of the energy effectiveness factor and clarifications to the luminaire types and classifications.
LE 6 may be downloaded free here.
