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5.0 BATTERY CALCULATION SHEET:
STANDBY CURRENT CALCULATIONS
1. The Standby Current for the PS-12/24-8CP is .060 Amps.
2. Enter the AUX current draw
3. Add Steps 1 and 2 together
4. Multiply Step 3 by the number of hours required.
TOTAL STANDBY CURRENT IN Amp HOURS.
ALARM CURRENT CALCULATIONS
1. List notification appliance requirements.
ALARM CURRENT FOR THE PS-12/24-8CP
NOTIFICATION APPLIANCE
2. Calculate total notification appliance current plus alarm current for PS-12/24-8CP.
3. Multiply Step 2 by alarm time required.
**Note: 15 Minute alarm is not UL listed for 60 hour battery backup when AUX power is used.
BACKUP BATTERY REQUIREMENTS
1. Enter Standby Current.
2. Enter Alarm Current from Step 3 above.
3. Add Steps 1 and 2 together.
4. Multiply step 3 by 1.2 for minimum Backup Battery Requirements
P84515 E
PS-12/24-8CP BATTERY CALCULATION SHEET
(0.06 Amps, 60 hour operation maximum)**
(0.20 Amps, 24 hour operation maximum)
24 Hours - Multiply by 24
60 Hours - Multiply by 60**
15 Min – Multiply by 0.25**
5 Min – Multiply by 0.0833
CURRENT
0.100
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Amps
Amps
Amps
AH
Amps
AH
AH
AH
AH
AH
Sheet 22 of 23
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