300.11 just addresses the wiring, boxes and fittings. I'm just tal;king about the luminaires---particularly lay-ins, but some inspectors require all recessed lights, cans, etc. to be independently supported from the grid. 410.16(C) 2005 or 410.36(B) 2008 only states that the grid itself must be securely fastened to itself and the structure, and that the fixtures must be fastened to the grid. I'm looking for another code, like for instance a building or fire code.
