• definitions giving an explanation of important
  terminology;
• general installation practices discussing every necessary procedure from receiving material on site to completing the installation and providing the building owner with spare parts and a lamp list;
• recessed lighting systems providing step-by-step instructions that apply to suspended accessible (grid) ceilings and to wallboard and other inaccessible hard ceilings; and
• surface and suspended lighting systems giving the rundown on many typical mounting situations on (or beneath) a finished ceiling including track lighting.

In addition, Appendix A provides guidance in ordering the appropriate troffer types for different applications; Appendix B lists standard downlight ratings that apply in many U.S. jurisdictions; while Appendix C contains two example illustrations of special-purpose mounting devices useful for installing suspended luminaires in commercial lighting systems.