Before You Begin Installing 151153
2-6
2.6.2 Current Draw Worksheet
For each RPS-1000* in the installation, use this worksheet to determine current
requirements during alarm/battery standby operation. (Copy this page if additional
space is required.)
*Use a separate worksheet for each RPS-1000.
Table 2-4: Current Draw Calculations
Device
Number of
Devices
Current per Device
Standby
Current
Alarm Current
For each device use this formula: This column X This column = Current per number of
devices.
RPS-1000 Intelligent Power Module
(Current draw from battery)
1* Standby: 40 mA 40 mA
Alarm: 160 mA 160 mA
Additional RPS-1000
(Daisy-chained to this module)
(7 max.) Standby: 10 mA
Alarm: 10 mA
Addressable Devices (381 max.) Standby: 0.55 mA
Alarm: 0.55 mA
5815XL SLC Expander (2 max.) Standby: 55 mA mA
Alarm: 55 mA mA
RA-1000 or RA-100 Remote Fire
Alarm Annunciator
(8 max.) Standby: 20 mA mA
Alarm: 25 mA mA
5824 Serial / Parallel Module (2 max.) Standby: 45 mA mA
Alarm: 45 mA mA
5865-4 LED Annunciator
(with reset and silence switches)
(8 max.) Standby: 35 mA mA
Alarm: 145 mA mA
5865-3 LED Annunciator Standby: 35 mA mA
Alarm: 145 mA mA
5880 Generic LED Driver Module Standby: 35 mA mA
Alarm: 200 mA mA
A Total System Current
**Auxiliary Devices Refer to devices manual for current rating.
Alarm/Standby: mA mA mA
Alarm/Standby: mA mA mA
Alarm/Standby: mA mA mA
Alarm/Standby: mA mA mA
B Auxiliary Devices Current
Alarm: mA
mA
Alarm: mA
mA
Alarm: mA mA
Alarm: mA
mA
C Notification Appliances Current
mA
D Total current ratings of all devices in system (line A + line B + C) mA mA
E Total current ratings converted to amperes (line D x .001): A A
F Number of standby hours (24 or 60 for NFPA 72, chapter 1, 1-5.2.5): H
G Multiply lines E and F. Total standby AH AH
H Alarm sounding period in hours. (For example, 5 minutes = .0833 hours) H
I Multiply lines E and H. Total alarm AH
AH
J ***Add lines G and I. Total ampere hours required AH
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