0607 Pot Lights in Insulated Ceilings - Electrical Electricity - Lights Outlets Switches -

Image Text: Attic > insulation > potlight meant for UNINSULATED ceilings only > Safer installation: open top drywall or wood box keeps insulation away from potlight, but lots of heat is lost into the attic > Best installation: potlight meant for insulated ceilings (metal box keeps insulation away from potlight) - usually has "IC" designation