Registered Firefighter Exam

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Except in civil defense facilities and high-rise civil buildings with a height exceeding 100 m, the continuous power supply time for emergency lighting installed in safety exits and evacuation corridors shall not be less than _________ minutes. ? According to the Code for Fire Protection Design of Buildings, the answer should be option 3: no less than 30 minutes. However, the answers on websites are all 20 minutes. How can this be explained? 10.1.5 Backup Power Supply: The continuous supply time of the backup power supply for fire emergency lighting and light evacuation signs in buildings shall comply with the following requirements: Ø For civil buildings with a height greater than 100 meters, it shall not be less than 1.5 hours ； Ø2 For medical buildings, buildings for the elderly, public buildings with a total construction area of more than 100,000 m2, and underground or semi-underground buildings with a total construction area of more than 20,000 m2, this value should be no less than 1.0 hour ； 3 For other buildings, it should not be less than 0.5 hours.