APPENDIX F
BATTERY CAPACITY CALCULATION
The backup battery power must be of sufficient capacity to operate the
system in accordance with the State and National Fire Codes.
CONVERSION TABLE
milliamp
(mA)
times 1,000
=
Amp
1
microamp
(
A)
times 1,000,000
=
Amp
1
CALCULATION FORMULA
Number of Time Required
Device Current (Amp)
X
Devices
X
(Hours)
=
Amp-Hours
Battery capacity calculation example:
Device (Amp)
X
DEVICES
X
(Hrs)
=
Amp-Hrs
Control Panel 0.15
Trouble Bell
-
-
Remote Trouble Connection
-
-
SmokeDetector(s) (normal) 0.005
Smoke Detector(s) *(alarm) 0.05
Alarm Bell (s) 0.125
TOTAL BATTERY CAPACITY REQUIRED
9:
Use the alarm current of 10% of the number of smoke
Detectors connected to the system.
Battery capacity requirement
will
vary according to
device power requirements and assumptions made. Each
alarm system installation is unique and requires
its
own capacity calculation to insure adequate battery
backup capacity. When Monaco's Control- Panel
is
used
in auxiliary service, only rechargeable batteries with
a capacity of 60 hours must be used.
(NFPA 72B)
DOCUMENT
NO.
PAGE
Monaco
Enteopoises
INC.
PPIIKANF WAPHINCTIIN
44714
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