502. NFPA 502 Standard for Road Tunnels, Bridges, and Other Limited Access Highways 2011 Edition. NFPA 502 Chapter 12.
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12.1.2 Emergency circuits installed in a road tunnel and ancillary areas shall remain functional for a period of not less than 1 hour for the anticipated fire condition, meeting one of the following methods:
(1) A fire-resistive cable listed for 2 hours in accordance with ANSI/UL 2196 or other equivalent internationally recognized standards to 950°C (1742°F) when approved by the AHJ.
(2) Circuits embedded in concrete or protected by a 2-hour fire barrier system in accordance with UL 1724. The cables or conductors shall be thermoset and shall be suitable to maintain functionality at the temperature within the embedded conduit or fire barrier system.
Environment: Large scale wall oven (14 x 15 x 3)
Temperature Profile: Slow Rise Follows ASTM E119
10000F @ 5 minutes
17000F @ 1 hour
18500F @ 2 hour
Cable are energized at application voltage
120V or 480V light bulbs set up
Water impact test after fire test