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It can be incorporated into an existing fluorescent light fixture or mounted remotely outside of it. When power is lost, the ballast will illuminate one or more lamps in the fixture at a reduced output for a minimum of 90 minutes (as required by code). These can be used as an alternative to egress lighting powered by a back-up electrical generator.
Ballasts for discharge lamps. Like fluorescent lamps, HID lamps require a ballast to start and maintain their arcs. The method used to initially strike the arc varies: mercury-vapor lamps and some metal-halide lamps are usually started using a third electrode near one of the main electrodes, while other lamp styles are usually started using ...
An emergency light is a battery-backed lighting device that switches on automatically when a building experiences a power outage. In the United States, emergency lights are standard in new commercial and high occupancy residential buildings, such as college dormitories , apartments , and hotels .
In an appearance on "The Pacman Jones Show," the Hall of Famer and Colorado coach made it clear what he thinks the future holds for his son.
A month after trumpeting Dickie V is cancer-free, legendary college basketball broadcaster Dick Vitale said Wednesday he has been cleared by doctors to return to the sideline and call games for ESPN.
Columbus Blue Jackets' Kirill Marchenko, left, shoots the puck as Carolina Hurricanes' Jaccob Slavin defends during the second period of an NHL hockey game Tuesday, Dec. 31, 2024, in Columbus, Ohio.
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