Wire Requirements

APPENDIX D

Correlations

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 MS-9200UDLS 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 MS-9200UDLS circuit. Reference the chart below to specify wire requirements and limitations for each MS-9200UDLS circuit.

Note: 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 (such as MA/SS-24D) instead of more electronically noisy notification appliances such as electromechanical bells or horns.

Table D.1 MS-9200UDLS Wire Specifications

CIRCUIT CONNECTIONS

 

WIRE REQUIREMENTS

 

 

 

 

 

 

 

 

Recommended

 

Circuit Type

Circuit Function

Wire Type and Limitations

Max. Distance

Wire Gauge and Compatible Brands

 

 

 

Feet (meters)

 

 

 

 

 

 

SLC loop

Connects to

Twisted pair, 40 ohms

10,000 (3,000 m)

12 AWG (3.1 mm2): Genesis WG-4315,

(power-limited)

Addressable

maximum per length of

 

WG-4515, Belden 5020UL, 6020UL

 

Devices

Style 6 and 7 loops. 40

8,000 (2,400 m)

14 AWG (2.00 mm2):Genesis WG-4313,

 

 

ohms per branch maximum

 

WG-4513, Belden 5120UL, 6120UL

 

 

for Style 4 loops1

 

 

 

4,875 (1,450 m)

2

 

 

 

16 AWG (1.30 mm ): Genesis WG-4311,

 

 

 

 

WG-4511, Belden 5220UL, 6220UL

 

 

 

3,225 (980 m)

18 AWG (0.78 mm2): Genesis WG-4306,

 

 

 

 

WG-4506, Belden 5320UL, 6320UL

 

 

Untwisted, unshielded pair

3,000 (900 m)

12-18 AWG (3.25 - 0.75 mm2)

ACS/TERM

Connects to

Twisted, shielded pair with a

6,000 (1,800 m)

18 AWG (0.75 mm2)

(EIA-485)

annunciator

characteristic impedance of

 

 

(power-limited)

modules

120 ohms

 

 

EIA-232

connects to

Twisted, shielded pair

50 (15 m)

18 AWG (0.75 mm2) minimum

(power-limited)

remote printer

 

 

 

 

and PC computer

 

 

 

MMF-300 and

Initiating Device

Maximum loop wire

2,500 (760 m)

12-18 AWG (3.25 - 0.75 mm2)

MMF-301

Circuit

resistance is 40 ohms for the

 

 

(power-limited)

 

MMF-300 and 20 ohms for

 

 

 

 

the MMF-301

 

 

MMF-302

Initiating Device

No more than a 2.4 volt drop

2,500 (760 m)

12-18 AWG (3.25 - 0.75 mm2)

(power-limited)

Circuit

allowed at end of circuit.

 

 

 

 

Maximum loop wire

 

 

 

 

resistance is 25 ohms

 

 

CMF-300

Notification

In alarm, no more than a 1.2

Distance limitation

12-18 AWG (3.25 - 0.75 mm2)

(power-limited)

Appliance

volt drop allowed at end of

set by 1.2 volt

 

 

Circuit

circuit

maximum line

 

 

 

 

drop

 

24 VDC

Connects to

No more than 1.2 volt drop

Distance limitation

12-18 AWG (3.25 - 0.75 mm2)

filtered

4-wire smoke

allowed from supply source

set by 1.2 volt

 

resettable

detectors

to end of any branch

maximum line

 

(power-limited)

 

 

drop

 

24 VDC

Connects to

No more than 1.2 volt drop

Distance limitation

12-18 AWG (3.25 - 0.75 mm2)

nonresettable

control modules,

allowed from supply source

set by 1.2 volt

 

(power-limited)

annunciators and

to end of any branch

maximum line

 

 

accessories

 

drop

 

CHG-120F or

Remote

12 AWG (3.25 mm2) in

20 (6 m)

12-18 AWG (3.25 - 0.75 mm2)

CHG-75

secondary power

conduit

 

 

 

source

 

 

 

Table Footnote

 

 

 

 

1. When using untwisted, unshielded wire, full conduit is recommended for optimum EMI/RFI protection.

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MS-9200UDLS PN 52750:A 11/04/05