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Appendix E: Wire Requirements
T-tapping of the SLC loop wiring is allowed for 2-wire (Style 4) configurations. The total
resistance of any branch cannot exceed 40 ohms. The total wire length of all branches cannot
exceed 10,000 feet (3,000 m).
Connecting external system accessories to the FACP 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 for each FACP circuit. Reference the chart below to specify wire requirements and
limitations for each FACP circuit.
Note:
1.
If the SLC loop is to be run in conduit with Notification Appliance Circuits, the risk of
encountering problems can be greatly reduced by exclusively employing electronic sounders
instead of more electronically noisy notification appliances such as electromechanical bells or
horns.
2.
If two SLC loops are to be installed in conduit, each loop must be installed in separate conduit.
3.
The SLC can be programmed to operate in LiteSpeed mode (factory default setting) for a
quicker device response time. While shielded wire is not required in LiteSpeed mode, it is
recommended that all SLC wiring be twisted-pair to minimize the effects of electrical
interference. Use the following table to determine the specific wiring requirements for the
SLC when unshielded wire is used:
CIRCUIT CONNECTIONS
Circuit Type
Circuit Function
Connects to
Addressable Devices
CLIP MODE
SLC loop
(power-limited)
LITESPEED MODE
ACS-BUS
Connects to
(EIA-485)
annunciator modules
(power-limited)
ANN-BUS
Connects to
(EIA-485)
annunciator modules
(Power-limited)
EIA-232
connects to remote
(power-limited)
PC computer
MMF-300 and
Initiating Device
MMF-301
Circuit
(power-limited)
MMF-302
Initiating Device
(power-limited)
Circuit
CMF-300
Notification Appliance
(power-limited)
Circuit
1
When using untwisted, unshielded wire, full conduit is recommended for optimum EMI/RFI protection.
196
Wire Type and Limitations
Twisted, shielded pair
10,000 (3,000 m)
40 ohms maximum per length
of Style 6 and 7 loops. 40 ohms
8,000 (2,400 m)
per branch maximum for Style 4
loops
4,875 (1,450 m)
3,225 (980 m)
Twisted, unshielded pair
10,000 (3,000 m)
40 ohms maximum per length
of Style 6 and 7 loops. 40 ohms
8,000 (2,400 m)
per branch maximum for Style 4
loops
4,875 (1,450 m)
3,225 (980 m)
1
Untwisted, unshielded pair
3,000 (900 m)
Twisted pair with characteristic
6,000 (1,800 m)
impedance of 120 ohms
Twisted pair
6,000 (1,800 m)
Twisted, shielded pair
50 (15 m)
Maximum loop wire resistance
2,500 (760 m)
is 40 ohms for the MMF-300
and 20 ohms for the MMF-301
No more than a 2.4 volt drop
2,500 (760 m)
allowed at end of circuit.
Maximum loop wire resistance
is 25 ohms
In alarm, no more than a 1.2
Distance limitation set
volt drop allowed at end of
by 1.2 volt maximum
circuit
line drop
Table E.1 FACP Wire Specifications
WIRE REQUIREMENTS
Recommended Max.
Distance
Wire Gauge and Compatible Brands
Feet (meters)
12 AWG (3.25 mm
Signal 98230, Belden 9583, WPW999
14 AWG (2.00 mm
Signal 98430, Belden 9581, WPW995
16 AWG (1.30 mm
Signal 98630, Belden 9575, WPW991
Direct Burial Cable Isotec NP713110VNQ-S
18 AWG (0.75 mm
Signal 98300, Belden 9574, WPW975
Direct Burial Cable Isotec NP714110VNQ-S
12 AWG (3.25 mm
6020UL, Genesis WG-4315 & WG-4515
14 AWG (2.00 mm
6120UL, Genesis WG-4313 & WG-4513
16 AWG (1.30 mm
6220UL, Genesis WG-4311 & WG-4511
18 AWG (0.75 mm
6320UL, Genesis WG-4306 & WG-4506
12-18 AWG (3.25 - 0.75 mm
12 AWG (3.25 mm
Refer to "ANN-BUS Wiring" on page 23 for wire
requirements.
18 AWG (0.75 mm
12-18 AWG (3.25 - 0.75 mm
12-18 AWG (3.25 - 0.75 mm
12-18 AWG (3.25 - 0.75 mm
MS-9600LS Series Manual — P/N 52646:B2 2/12/2010
2
): Genesis 4410,
2
):Genesis 4408 & 4608
2
): Genesis 4406 & 4606
2
): Genesis 4402 & 4602
2
): Belden 5020UL &
2
):Belden 5120UL &
2
): Belden 5220UL &
2
): Belden 5320UL &
2
) using listed wire
2
)
2
) minimum
2
)
2
)
2
)
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