Have very simple new lighting fixtures to install in my condo. When I got into the box there is a message on the fixture to the following...
MIN 90 DEGREE CELSIUS SUPPLY CONDUCTORS
CAUTION: RISK OF FIRE. MOST DWELLINGS BUILT BEFORE 1985 HAVE SUPPLY WIRE RATED 60 DEGREE CELSIUS. CONSULT A QUALIFIED ELECTRICIAN TO ENSURE CORRECT BRANCH CIRCUIT CONDUCTOR.

Is this something that I can check, or do I have to have an electrician come in to do it?
(My condo was built around or before 1985.)