Installation—Installing the FC-2000 75
Calculating Power Supply
Requirements
This section provides tables for the calculation of the primary, secondary,
and AC branch requirements for the control panel.
The control panel requires connection to a separate dedicated AC branch
circuit (120 VAC, 50/60 Hz), 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 run 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 Code as well as local codes. Use
12 AWG wire with 600 volt insulation for this branch circuit.
Use Table 1 to determine the total amount of current, in AC amps, that the
AC service must be capable of supplying to the system.
Table 1: AC Branch Current Requirements
Device Type Number of
Devices
Multiply
By
Current
in Amps
Total
Current/Device
AVPS-24
[] X 1.0
AA-30
[] X 1.0
AA-120
[] X 1.85
Main Power
Supply
One MPS-24A
or
MPS-24B
X1.8 1.8
Remote
Battery
Charger
1 NR45-24 X 1.0
Sum Column for AC Branch Current Required = amps
The MPS-24A/MPS-24B must be capable of powering all internal control
panel devices (and several external types of devices) continuously during
Standby (non-alarm) conditions. Use Table 2 to determine the Standby
Load on the MPS regulator. Additional current must be provided by the
power supply during an alarm condition. Use Table 2 to determine the
current needed in Alarm.
AC Branch
Circuit
Main Power
Supply
To Next Page
Loading...
Need help?
General
