wheelervm5579 wheelervm5579

03-09-2020
Social Studies

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Secondary power supplies must supply power to protected-premises fire alarm systems for a minimum of ?

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Vickiee Vickiee

08-09-2020

Answer: 24 hours of standby followed by 5 minutes of alarm

Explanation:

Fire alarm and other security alarm devices would always need power supply to function, depriving or shortening the sippy of power would make them not functional for those moments which they lacked the power, a 24hours supply is a must for effectiveness of the fire alarm system.

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