Yes, downlights can potentially cause a fire if they are not installed correctly or if the wrong type of downlights are used in certain applications.
The main risk of fire from downlights comes from the heat generated by the light fitting. If the downlight is not insulated properly or if the heat generated by the bulb is not properly dissipated, it can cause the surrounding materials to overheat and potentially catch fire.
To reduce the risk of fire, it is important to ensure that downlights are installed correctly and that they are used in accordance with their intended purpose. This may involve ensuring that they are installed with proper insulation, that the correct type of downlight is used for the application (e.g., fire-rated downlights for use in ceilings), and that they are properly maintained and kept clean to prevent dust buildup that can contribute to overheating.
It is also important to follow the manufacturer’s instructions for installation and use of the downlights and to seek the advice of a licensed electrician if you are unsure about the safety of your installation.