Thermal Protection Devices Reduce Overheating Hazard. Fire Findings. p. 9+

Abstract: Fire Findings conducted a test of recessed incandescent light fixtures and they recommend a high limit switch as a thermal protection device. One problem found with this high limit switch is its method of alerting consumers of potential fire hazards. The light "blinks" if there is overheating. This means that the light will shut off and then turn itself back on. This could confuse owners of the light because they may assume that the light has fixed itself and there is no problem. While Fire Findings approves of the high limit switch, they conclude that the manufacturers could develop an improved device for alerting owners of possible problems.

Fire Findings also conducted tests on different light bulbs. They discovered that small, 60 watt, A-type bulbs had temperatures of 200 degrees F when placed in cellulose insulation. 100 watt bulbs had even higher temperatures and presented fire hazards. Insulated fixtures that were over-bulbed were also tested. These fixtures required their high-limit switches to activate approximately six times an hour. Fire Findings suggested that six times an hour might be too many for the switch to handle.

For more information, contact:
Fire Findings L.L.C.
2026 Plaza Dr.
PO Box 8637
Benton Harbor, MI 49023
Voice: (269) 925-2200
Fax: (269) 925-2204
E-Mail: firefind@firefindings.com