Final answer:
Non-IC luminaires have a minimum clearance of 3 inches from thermal insulation to prevent overheating and fire hazards.
Step-by-step explanation:
Non-IC luminaires have a minimum clearance of 3 inches from thermal insulation.
Non-IC luminaires are light fixtures that are not designed for direct contact with insulation materials. The minimum clearance is necessary to prevent overheating and potential fire hazards.
For example, if a non-IC luminaire is installed near ceiling insulation, it should be spaced at least 3 inches away from the insulation material to ensure proper ventilation and prevent the buildup of excessive heat.