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Sample Fire Alarm System Calculations - rpsa-fire.com

rpsa File: Sample Fire Alarm System Calculations.DOC Page 6 05 October 2000 rpsa FIRE PROTECTION ENGINEERS The voltage at the load is then: VH = IT RH = 0.165(120) = 19.8 = 20 VDC In this problem we were told that “The appliances are rated to produce 78 dBA at 3 meters as long

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