When we do an insulation installation in a home, it can change the insulation environment for the existing cables. This often means the maximum amount of power allowed to pass through the circuit is reduced. In newer switchboards, this might be as simple as swapping some fuses, while older boards may require an upgrade for compliance. We also want to provide a complete coverage of ceiling insulation in your home and not leave any gaps, this means that we need a plan for recessed lighting in the home. We can either install downlights that are IC rated (IC stands for insulation contact) or place a downlight cover that is IC rated over the existing light so that we can safely bury it with insulation. https://alexanderwatson.com.au/news/why-upgrade-electrical-with-insulation/