Appendix A: Supply Calculations - Fire-Lite The Sensiscan 200 Installation, Operation, And Programming Manual

Appendix A contains tables for calculating primary, secondary, and AC branch requirements for the control panel.
Calculations cover the entire line of S200 equipment.
The power supply must be able to power the fire alarm system under all operating conditions. Use the following
tables:
• Table A-1 – to determine the total amount of current, in AC amps, that the AC service must be capable of
supplying to the system.
• Table A-2A – to determine the power supply load and verify that the load is within acceptable limits.
• Table A-2B an A-2C – to determine secondary (battery) power requirements.
Section A.1 The 120 VAC Fire Alarm Circuit
The FACP requires connection to a separate, dedicated 120 VAC fire alarm circuit, labeled as "FIRE ALARM."
This 120 VAC circuit must connect to the line side of the main power feed of the protected premises. No other
equipment may be powered from the FACP. The 120 VAC circuit wiring must run continuously, without any
disconnect devices, from the power source to the FACP. Overcurrent protection for this circuit must comply with
Article 760 of the National Electrical Code as well as local codes. Use #12 AWG wire with 600-volt insulation for
this circuit.
Device Type
AVPS-24F
Main power supply
60
Appendix A:
Supply Calculations
Number of Devices
[ ]
1
Table A-1: 120 VAC Fire Alarm Circuit
S200 15032 Rev C 02/22/96 P/N 15032:C
---- Current (Amps)
X 1
X 1.8
AC Branch Current required
---- Total Current
=
1.8
=
Amps
=