How far must thermal insulation be installed from recessed lighting fixtures?

The correct distance for thermal insulation to be installed from recessed lighting fixtures is 3 inches. This distance is primarily advised to prevent a potential fire hazard, as recessed lights can generate substantial heat. Insulation that is too close to these fixtures can cause overheating and possibly ignite the insulation material.

The 3-inch allowance provides a safe buffer zone that maintains sufficient airflow around the fixtures, reducing the risk of heat buildup. It’s important for both the safety of the building and compliance with local building codes concerning electrical and fire safety.

Although other distances might be considered in specific contexts or jurisdictions, the 3-inch guideline is a commonly accepted standard to ensure safety in residential and commercial installations.