Appendix B: Electrical Specifications Wire Requirements
78
AFP-100/AFP-100E Instruction PN 51010:C1 02/06/2002
The following table contains wire requirements for the AFP-100:
Table 17 AFP-100 Wire Specifications
CIRCUIT CONNECTIONS WIRE REQUIREMENTS
Circuit Type
Circuit
Function
Wire Type and
Limitations
Recommended
Max. Distance
Feet (meters)
Wire Gauge and Compatible Brands
SLC
(power-limited)
Connects to
Addressable
Devices
Twisted, shielded pair,
40 ohms maximum per
length of Style 6 and 7
loops. 40 ohms per
branch maximum for
Style 4 loops
1
10,000 (3,000)
8,000 (2,400)
4,875 (1,450)
3,225 (980)
12 AWG (3.25 mm
2
)
14 AWG (2.00 mm
2
)
16 AWG (1.30 mm
2
)
18 AWG (0.75 mm
2
)
Untwisted, unshielded
pair
1,000 (300)
12-18 AWG (3.25 - 0.75 mm
2
)
ACS COMM Connects to
annunciator
modules
Twisted, shielded pair
with a characteristic
impedance of 120 ohms
6,000 (1,800)
18 AWG (0.75 mm
2
)
TERM COMM Connects to
remote printer
and PC
computer
Twisted, shielded pair 50 (15)
18 AWG (0.75 mm
2
) minimum
FMM-1 and
FMM-101
(power-limited)
Initiating Device
Circuit
Maximum loop wire
resistance is 40 ohms for
the FMM-1 and 20 ohms
for the FMM-101
2,500 (760)
12-18 AWG (3.25 - 0.75 mm
2
)
FCM-1
(power-limited)
Notification
Appliance
Circuit
In alarm, no more than a
1.2 volt drop allowed at
end of circuit
Distance limitation
set by 1.2 volt
maximum line
drop
12-18 AWG (3.25 - 0.75 mm
2
)
24 VDC
filtered
resettable and
nonresettable
(power-limited)
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
maximum line
drop
12-18 AWG (3.25 - 0.75 mm
2
)
24 VDC
nonregulated
(power-limited)
Connects to
control modules
and accessories
No more than 1.2 volt
drop allowed from
supply source to end of
any branch
Distance limitation
set by 1.2 volt
maximum line
drop
12-18 AWG (3.25 - 0.75 mm
2
)
CHG-120 Remote
secondary power
source
12 AWG (3.25 mm
2
) in
conduit
20 (6)
12-18 AWG (3.25 - 0.75 mm
2
)
1. When using untwisted, unshielded wire, full conduit is recommended for optium EMI/RFI protection
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