Very often Listed installations are overlooked, in my humble opinion, when remodeling makeovers of Dwellings are performed. I understand that the connection of an incandescent light fixtures or any other luminaire rated for 90 Degree celscius wire connections should not be an acceptable install if the existing wire used is not rated for the connection to that Fixture's Listed Wire connections. This is a very real fire hazard, as I see it, when existing wire at ceiling boxes is cloth covered insulation and also tw is only rated for 60 degrees Celscious. Anyone?
