Notifier AFP-200

AFP-200 Instruction PN 15511:F2 10/11/99 71
A.2 Calculating the AC Branch Circuit
The control panel requires connection to a separate, dedicated AC branch circuit (120 VAC for AFP-200 and
220/240 VAC for AFP-200E), which must be labeled FIRE ALARM. This branch circuit must connect to the
line side of the main power feed of the protected premises. No other equipment may be powered from the fire
alarm branch circuit. The branch circuit wire must run continuously, without any disconnect devices, from the
power source to the fire alarm control panel. Overcurrent protection for this circuit must comply with Article
760 of the National Electrical Codes as well as local codes. Use 14 AWG wire with 600-volt insulation for this
branch circuit.
Use Table A-1 and Table A-2 to determine the total amount of current, in AC amperes (A), that must be
supplied to the system.
Appendix A  Power Supply Calculations
eciveDeciveD
eciveD
eciveDeciveD
epyT
rebmuNrebmuN
rebmuN
rebmuNrebmuN
fo
seciveD
tnerruCtnerruC
tnerruC
tnerruCtnerruC
warD
)spma(
tnerruClatoTtnerruClatoT
tnerruClatoT
tnerruClatoTtnerruClatoT
eciveDrep
002-PFA1X0.3= 0.3
42-SPVA][X 0.1=
deriuqeRtnerruChcnarBCArofnmuloCmuSderiuqeRtnerruChcnarBCArofnmuloCmuS
deriuqeRtnerruChcnarBCArofnmuloCmuS
deriuqeRtnerruChcnarBCArofnmuloCmuSderiuqeRtnerruChcnarBCArofnmuloCmuS
=A
eciveDeciveD
eciveD
eciveDeciveD
epyT
rebmuNrebmuN
rebmuN
rebmuNrebmuN
fo
seciveD
tnerruCtnerruC
tnerruC
tnerruCtnerruC
warD
)spma(
tnerruClatoTtnerruClatoT
tnerruClatoT
tnerruClatoTtnerruClatoT
eciveDrep
E002-PFA1X5.1= 5.1
E42-SPVA][X 5.0=
deriuqeRtnerruChcnarBCArofnmuloCmuSderiuqeRtnerruChcnarBCArofnmuloCmuS
deriuqeRtnerruChcnarBCArofnmuloCmuS
deriuqeRtnerruChcnarBCArofnmuloCmuSderiuqeRtnerruChcnarBCArofnmuloCmuS
=A
A.1 Overview
This appendix contains instructions and tables for calculating power supply currents in alarm and standby
conditions. This is a four-step process, consisting of the following:
1) Calculating the total amount of AC branch circuit current required to operate the system.
2) Calculating the power supply load current for non-fire and fire alarm conditions and calculating the
secondary (battery) load.
3) Calculating the size of batteries required to support the system if an AC power loss occurs.
4) Selecting the proper batteries for your system.
Table A-2 220/240 VAC Branch Circuit Requirements
Table A-1 120 VAC Branch Circuit Requirements