RISCO Group LightSYS 2 - Manual (Page 221)

Wiring
Page 221
Wire Gauge Max Combined Length of ALL Expansion
Bus Wiring
24 AWG 7/02mm 150 meters 492 feet
22 AWG 16/02mm 200 meters 656 feet
20 AWG 24/02mm 333 meters 1092 feet
19 AWG 28/02mm 400 meters 1312 feet
Table A-3: Wire Gauge
Notes:
For maximum system stability, it is best NOT to exceed a total of 300 meters (1000
feet) of wire when wiring the Expansion bus.
For a distance of more than 300 meters, refer to RISCO Group technical support
service for detailed information.
Total
Auxiliar
y Power
(Max
Current
Draw
per
Branch) Desired Wire Gauge in Particular Branch
32/02
mm
18 AWG
28/02
mm
19 AWG
24/02 mm
20 AWG
16/02
mm
22 AWG
7/02 mm
24 AWG
Max
Run Max Run Max Run Max Run Max Run
Meters Feet Meters Feet Meters Feet Meters Feet Meters Feet
20mA 1195 3920 945 3100 750 2460 472 1550 296 970
30mA 793 2600 628 2060 500 1640 314 1030 197 646
40mA 597 1960 472 1550 375 1230 236 775 148 485
50mA 478 1568 378 1240 300 984 189 620 118 388
60mA 296 1300 314 1030 250 820 157 515 98 323
70mA 341 1120 270 886 214 703 135 443 84 277
80mA 299 980 237 775 187 615 118 388 74 243
90mA 264 867 209 687 166 547 105 343 66 215
100mA 239 784 189 620 123 492 94 310 59 194
Table A-4: Total Auxiliary Power
Note:
The wire lengths indicated represent the one‐way distance between the source
of power and the last detector in the branch.