Wire Distances Per Wire Gauge Using Copper Wire; Typical Wire Resistance Per 1000 Ft. Using Copper Wire - Honeywell IFP-2100 Installation And Operation Manual

Model IFP-2100/ECS Installation Manual
These cases are marked in the chart with an asterisk (*). Maximum length can never be more than 6,000 feet,
regardless of gauge used. The formula used to generate this chart is shown in the note below.
Table 4-2: Wire Distances Per Wire Gauge Using Copper Wire
Total Worst Case
Current Draw (amps)
0.100
0.200
0.300
0.400
0.500
0.600
0.700
0.800
0.900
1.000 (Max)
Note: The following formulas were used to generate the wire distance chart:
Maximum Resistance (Ohms) =
Maximum Wire Length (Feet) =
(6000 feet maximum)
where: Rpu = Ohms per 1000 feet for various wire gauges (see table below)
Table 4-3: Typical Wire Resistance Per 1000 ft. Using Copper Wire
Wiring Distance calculation example:
Suppose a system is configured with the following SBUS modules:
2 - Module RA-2000 Fire Annunciator
1 - RPS-1000 Intelligent Power Expander
1 - 5865 LED Annunciator
1 - 5824 Serial/Parallel Interface Module
Wiring Distance: SBUS Modules to Panel
22 Gauge 18 Gauge
1852 ft. 4688 ft.
926 ft. 2344 ft.
617 ft. 1563 ft.
463 ft. 1172 ft.
370 ft. 938 ft.
309 ft. 781 ft.
265 ft. 670 ft.
231 ft. 586 ft.
206 ft. 521 ft.
185 ft. 469 ft.
Total Worst Case Current Draw (amps)
Maximum Resistance (Ohms)
Wire Gauge Ohms per 1000 feet (Rpu)
22
18
16
14
4-7
16 Gauge
* 6000 ft.
3731 ft.
2488 ft.
1866 ft.
1493 ft.
1244 ft.
1066 ft.
933 ft.
829 ft.
746 ft.
6.0 Volts
Rpu
16.2
6.4
4.02
2.54
LS10143-001SK-E
14 Gauge
* 6000 ft.
5906 ft.
3937 ft.
2953 ft.
2362 ft.
1969 ft.
1687 ft.
1476 ft.
1312 ft.
1181 ft.
* 500