Document 15094 Rev C 11/20/95 15094:C
Page 16
Appendix A: Circuit/Device Ratings
Circuit Type
Circuit Functions
Wire Requirements
Distance
(feet)
Typical Wire Type
LIB-200
SLC Loop
Connects to Intelligent and
Addressable Modules, and
to XP Transponders
Twisted-shielded pair, 12 to 18
AWG, 40 ohms max per length of
Style 6 and 7 loops. 40 ohms per
branch max for Style 4 loops
10,000
8,000
4,875
3,225
Belden 9586 (12 AWG) West Penn 999
Belden 9581 (14 AWG) West Penn 995
Belden 9575 (16 AWG) West Penn 991
Belden 9574 (18 AWG) West Penn 975
EIA-485
Connects to AMG-1 and to
Annunciator Control
System Modules
Twisted-shielded pair with a
characteristic impedance of
approximately 120 ohms. 18 AWG
minimum.
6,000
6,000
6,000
4,000
Belden 9586 (12 AWG) West Penn 999
Belden 9581 (14 AWG) West Penn 995
Belden 9575 (16 AWG) West Penn 991
Belden 9574 (18 AWG) West Penn 975
EIA-232
Connects to CRTs and
remote printers
Twisted-shielded pair. 18AWG
minimum.
see
EIA-232D
Belden 9586 (12 AWG) West Penn 999
Belden 9581 (14 AWG) West Penn 995
Belden 9575 (16 AWG) West Penn 991
Belden 9574 (18 AWG) West Penn 975
MMX
XPM-8/L
Initiating Device Circuit
12-18 AWG. Maximum loop wire
resistance is 20 ohms (MMX-1,
MMX-101) or 100 ohms (XPM-8)
5,000
4,000
2,438
1,613
Belden 9586 (12 AWG) West Penn 999
Belden 9581 (14 AWG) West Penn 995
Belden 9575 (16 AWG) West Penn 991
Belden 9574 (18 AWG) West Penn 975
CMX
XPC-8
Notification Apopliance
Circuit
12-18 AWG. MPS-24A: At alarm
current level, no more than a 1.2
volts drop at the end of the circuit.
Installer
Calculation
Required
Belden 9586 (12 AWG) West Penn 999
Belden 9581 (14 AWG) West Penn 995
Belden 9575 (16 AWG) West Penn 991
Belden 9574 (18 AWG) West Penn 975
Power Runs
To CMXs; to XPC-8s
12-18 AWG. Size wire so that no
more than 1.2 volts drop across wire
run from supply source to end of any
branch.
Installer
Calculation
Required
Belden 9586 (12 AWG) West Penn 999
Belden 9581 (14 AWG) West Penn 995
Belden 9575 (16 AWG) West Penn 991
Belden 9574 (18 AWG) West Penn 975
Power Runs
To annunciators
12-18 AWG. Size wire so that no
more than 2.4 volts drop across wire
run from supply source to end of any
branch.
Installer
Calculation
Required
Belden 9586 (12 AWG) West Penn 999
Belden 9581 (14 AWG) West Penn 995
Belden 9575 (16 AWG) West Penn 991
Belden 9574 (18 AWG) West Penn 975
NR45-24
Remote Secondary Power
Source
Twisted-shielded pair, 12 AWG in
conduit
20 (max)
Belden 9583 (12 AWG) West Penn 999
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