HomeMy WebLinkAboutA14-0059 calcs.pdfFire Alarm System Secondary Battery-set Calculation Worksheet
ITEM DESCRIPTION STANDBY
CURRENT
PER UNIT
(AMPS)
QTY TOTAL
STANDBY
CURRENT
PER ITEM
ALARM
CURRENT
PER UNIT
(AMPS)
QTY TOTAL
ALARM
CURRENT
PER ITEMBPS6A Power Booster 0.1050 X 1 =0.1050 0.5750 X 1 =0.5750
CO GE CO Detector 0.0200 X 3 =0.0600 0.0400 X 3 =0.1200
REQUIRED
STANDBY
TIME (HRS)
NFPA 72-2002
4.4.1.5.3.1
TOTAL
SYSTEM
STANDBY
CURRENT
(AMPS)
REQUIRED
STANDBY
CAPACITY
(AMP-HOURS)
REQUIRED
ALARM TIME
(HOURS)
NFPA 72-2002
4.4.1.5.3.1
TOTAL
SYSTEM
ALARM
CURRENT
(AMPS)
REQUIRED
ALARM
CAPACITY
(AMP-HOURS)
24 X 0.1650 =3.9600 0.083 X 0.6950 =0.0577
REQUIRED
STANDBY
CAPACITY
(AMP-HOURS)
REQUIRED
ALARM
CAPACITY
(AMP-HOURS)
TOTAL
CAPACITY
(AMP-HOURS)
TOTAL
CAPACITY
(AMP-HOURS)
SAFETY
FACTOR
ADJUSTED
BATTERY
CAPACITY
(AMP-HOURS)
3.96 +0.0577 =4.0177 4.0177 X 120%=5
Prepared by: John Goss
0.69500.1650
TOTAL SYSTEM
ALARM CURRENT (AMPS)
TOTAL SYSTEM
STANDBY CURRENT (AMPS)
Prepared for: Riva Unit 730