Edwards Signaling eFSA250 - Manual (Page 224)

Appendix B: Worksheets
212 E-FSA64 and E-FSA250 Technical Reference Manual
Battery calculation worksheet
Use this worksheet to determine the minimum amp hour capacity required for the
panel’s standby battery. You can obtain operating current requirements for
notification appliances from their respective installation sheets.
Battery calculation worksheet
Standby
current (mA)
Alarm
current (mA)
Control panel
(use Worksheet A and place totals
here)
Auxiliary/smoke power
(use Worksheet B and place totals
here)
NAC 1
NAC 2
NAC 3
NAC 4
Total current
Operating time required × hr × min
÷ 60
+ = mAh
× 1.2
mAh
÷ 1,000
Battery size [1] Ah
[1] Battery size may not exceed 26 Ah for UL/ULC systems. See Appendix A “Panel
specifications” on page 207 and “Battery wiring (TB8)” on page 7 for battery details.