Model RPS-1000 Installation Manual 151153
2-9
Wiring Distance calculation example:
Suppose a system is configured with the following SBUS modules:
2 - RA-1000 Fire Annunciator
1 - RPS-1000 Intelligent Power Expander
1 - 5865 LED Fire Annunciator
1 - 5824 Parallel/Serial Interface
The total worst case current is calculated as follows:
Using this value, and referring to the Wiring Distance table, it can be found that the
available options are:
370 feet maximum using 22 Gauge wire
938 feet maximum using 18 Gauge wire
1493 feet maximum using 16 Gauge wire
2362 feet maximum using 14 Gauge wire
RA-1000 Current Draw = 2 x .100 amps = .200 amps
RPS-1000 Current Draw = 1 x .010 amps = .010 amps
5865 Current Draw = 1 x .200 amps = .200 amps
5824 Current Draw = 1 x .040 amps = .040 amps
Total Worst Case Current Draw = .450 amps
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