Fire-Lite ECC-125DA/E Distributed Audio Amplifiers - Manual (Page 24)

24 ECC-50/125DA Instruction Manual — P/N LS10027-000FL-E:B 8/13/2013
ECC-125DA Remote Amplifier Installation
2.1.9 Calculating Current Draw and Standby Battery
This section helps you determine the current draw and standby battery needs for your installation
(18 Ampere Hours maximum will fit in cabinet). Complete the remaining instructions in Table 2.2.
For batteries larger than 18 AH, use the BB-26 or BB-55FBattery Box. A maximum of 35 Ampere
Hours is allowed per system.
Device
No. of
Devices
Current Per Device
Standby
Current
Alarm
Current
ECC-125DA 1
Standby: 375 mA 375 mA
Alarm: 700 mA 700 mA
ECC-CE4 0 or 1
Standby: 20 mA
Alarm (All Channels): 180 mA mA
A Current Subtotals: mA mA
Notification Devices Refer to device manual for number of devices and current ratings.
B Current Subtotals: mA mA
C Total current rating of all devices in system (Line B) X .001 A A
D Number of standby hours (24 or 60 for NFPA 72) H
E Multiply line C (standby current) and D: Total standby AH AH
F Alarm sounding period in hours (For example, 5 minutes = .0833 hours): H
G Multiply line C (alarm current) and F: Total alarm AH AH
H Add lines E and G (AH = Ampere Hours): Total AH required AH
Table 2.2 Current Draw Calculations