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Appendix F: Power Supply and Battery Calculations
Battery Capacity Requirement:
Battery (AH) = ([STANDBY (A) ______ ] x [(24,60 or 90 Hours) ___ ]) +
([ALARM (B) ______ ] x [Alarm in Hr.] _____) = (C) ______AH
Total System Current in Alarm State: Must be 5.5 amperes or less for FR-320 Series.
Battery Selection: Multiply (C) by 1.20 to derate battery.
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