Fire-Lite Alarms MS-5024, Product Description

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Wire Requirements
72
Document #50066 Rev.D2 12/03/02 P/N 50066:D2
Appendix C
Wire Requirements
Connecting external system accessories to the MS-5024 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-5024 circuit.
Reference the chart below to specify wire requirements and limitations for each MS-5024.
TABLE C-1:
Wire Requirements
Circuit Connections Wire Requirements
Circuit Type Circuit Function Wire Type and Limitations
Recommended
Maximum
Distance
(feet/m)
Wire Gauge
Initiating Device
Circuit (power-
limited)
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 (980 m)
12AWG Belden 9582
14AWG Belden 9580
16AWG Belden 9572
18AWG Belden 9571
(0.75 mm
2
- 3.25 mm
2
)
24 VDC
Filtered,
Resettable,
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
(0.75 mm
2
- 3.25 mm
2
)