ECC-50/125DA Instruction Manual —
P/N LS10027-000FL-E:D 5/21/2015
25
Installation
ECC-125DA Remote Amplifier
2.1.9 Calculating Current Draw and Standby Battery
This section helps 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
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