Isolate the circuit and verify absence of voltage. Identify the ceiling structure separately from the electrical box and finish.
Method basis: Rigips/Knauf system guidance and Fischer/Hilti fixing-selection principles. Final parameters always come from the selected product data.
How to plan the installation
Use a fixing approved for overhead installation and any secondary support required by the luminaire maker.
Common mistake
Never hang a light from conductors, a decorative box cover or unconfirmed board.
Pre-start check
- Was the structural base identified rather than only the finish?
- Does the weight include contents and projection?
- Were services, edges and minimum spacing checked?
- Does the product data permit the base, direction and environment?