Fire-Lite MS-2410BC Conventional Control Panel - Manual (Page 56)

Wire Requirements
56 Document #50801 Rev.C 12/14/01 P/N 50801:C
Appendix B
Wire Requirements
Connecting external system accessories to the MS-2410BC main circuits must be carefully considered to ensure
proper operation. It is important to use the correct type of wire, wire gauge and wire run length per each MS-2410BC
circuit. Reference the chart below to specify wire requirements and limitations for each MS-2410BC.
TABLE B-1: Wire Requirements
CIRCUIT CONNECTIONS WIRE REQUIREMENTS
CIRCUIT TYPE
CIRCUIT
FUNCTION
WIRE TYPE AND
LIMITATIONS
RECOMMENDED
MAX. DISTANCE
Feet (meters)
WIRE GUAGE
Initiating Device
Circuit
Connects to
Initiating Devices
Untwisted, unshielded wire
(Do not exceed 100 ohms)
10,000 (3,000 m)
8,000 (2,400 m)
4,875 (1,480 m)
3,225 (975 m)
12 AWG (3.25 mm
2
) Belden 9583
WPW999
14 AWG (2.00 mm
2
) Belden 9581
WPW995
16 AWG (1.30 mm
2
) Belden 9575
WPW991
18 AWG (0.75 mm
2
) Belden 9574
WPW975
EIA-485
LED-10IM Inter-
face Module
Connects to
annunciator
modules and relay
module
Twisted, shielded pair with a
characteristic impedance of
120 ohms
6,000 (1,800 m) 18 AWG (0.75 mm
2
)
24 VDC resettable,
nonresettable
Connects to
annunciators and
other accessories
No more than 1.2 volt drop
allowed from supply source
to end of any branch
Distance limitation
set by 1.2 volt maxi-
mum line drop
12 AWG (3.25 mm
2
) - 18 AWG
(0.75 mm 2 )