The National Electrical Manufacturers Association (NEMA, www.nema.org) has published LSD 45-2009, “Recommendations for Solid-State Lighting Sub-Assembly Interfaces for Luminaires”.

This new white paper, prepared by the NEMA Solid State Lighting
Section, covers the design and construction of interconnects for SSL
applications. It compiles the latest industry information regarding
mechanical, electrical and thermal connections, and documents existing
industry best practices.