Thermal Protection Devices Reduce Overheating Hazard. Fire Findings.
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