What is the minimum clearance that combustible insulation must maintain from recessed lighting, fan motors, and other heat-producing devices?

What is the minimum clearance that combustible insulation must maintain from recessed lighting, fan motors, and other heat-producing devices?

• A. 3 inches
• B. 1 inch
• C. 6 inches
• D. 9 inches

Answer: (A)

Heat-producing devices give off enough warmth that combustible insulation nearby can overheat and potentially ignite. To prevent this fire risk, a safe distance from insulation is required. The minimum clearance is three inches. This is the standard for devices like recessed lighting and fans that aren’t rated to be in contact with insulation; if a fixture is specifically rated for insulation contact, the insulation can be closer per the manufacturer’s guidance. Distances smaller than this minimum aren’t allowed, while larger distances meet the requirement but aren’t the minimum.

Heat-producing devices give off enough warmth that combustible insulation nearby can overheat and potentially ignite. To prevent this fire risk, a safe distance from insulation is required. The minimum clearance is three inches. This is the standard for devices like recessed lighting and fans that aren’t rated to be in contact with insulation; if a fixture is specifically rated for insulation contact, the insulation can be closer per the manufacturer’s guidance. Distances smaller than this minimum aren’t allowed, while larger distances meet the requirement but aren’t the minimum.