Engineering Manager
Engineering Manager
It depends on how the item is manufactured. A Nationally Recognized Testing Laboratory (NRTL) such as UL or MET tests the "submitted sample fixture for evaluation" and takes temperature readings at critical components. These will vary fixture to fixture. Size, ventilation, etc all play a part. The maximum allowable temperature rating set by the UL standard for Luminaires (UL1598) will vary depending on whether the recessed fixture is IC rated or not. If the fixture as tested falls below the allowable temperature, it passes. The ACTUAL measured temperature is in the UL report given to the submitter (usually the manufacturer), and that is proprietary, although some will give that information out. You can get a thermocouple for your VOM and measure it yourself if you really need to know.
