What is the difference between Non-IC and Type IC lighting fixtures? 

Non-IC (Non–Insulation Contact) requires a minimum clearance from insulation, typically 3 inches, and must maintain spacing from adjacent building materials per the fixture’s listing.  

Type IC (Insulation Contact) is rated for direct contact with standard thermal insulation under normal operating conditions. Not compatible for direct contact with spray foam insulation, maintain 3 inch clearance from spray foam to luminaire.  

• Standard insulation includes fiberglass, cellulose, and mineral wool, typically installed as batts, rolls, or blown-in materials.  
• Spray foam insulation is a polyurethane-based material applied as a liquid that expands and cures into a rigid, air-sealing insulation layer.  

Are fire rated enclosures compatible with Type IC or Non-IC fixtures and does it void the UL/ETL listing? 

• For type IC, common enclosures such as Tenmat fire rated covers are compatible when installed according to the manufacturer’s instructions and does not void the safety listing. 
• For type Non-IC, enclosures are acceptable if the 3-inch clearance is met and installed according to the manufacturer’s instructions and does not void the safety listing.