What is an IC-rated luminaire?

What is an IC-rated luminaire?

• A. A fixture rated for insulation contact, allowed to be in direct contact with thermal insulation.
• B. A luminaire that uses inverted current.
• C. A fixture that cannot touch insulation.
• D. A luminaire rated for indoor use only.

Answer: (A)

An IC-rated luminaire is built to be installed directly in contact with thermal insulation. Its design allows heat to be managed safely even when insulation surrounds the fixture, so there’s no need for air gaps or barriers in the ceiling cavity. That’s why describing a fixture as rated for insulation contact is the best indication of IC rating. If a fixture isn’t IC-rated, it generally must be kept away from insulation or installed with a barrier to prevent heat from reaching the insulation. The other descriptions don’t address insulation proximity or safety in insulated spaces.

An IC-rated luminaire is built to be installed directly in contact with thermal insulation. Its design allows heat to be managed safely even when insulation surrounds the fixture, so there’s no need for air gaps or barriers in the ceiling cavity. That’s why describing a fixture as rated for insulation contact is the best indication of IC rating. If a fixture isn’t IC-rated, it generally must be kept away from insulation or installed with a barrier to prevent heat from reaching the insulation. The other descriptions don’t address insulation proximity or safety in insulated spaces.