Appendix C Wiring - Risco LightSYS Installation And Programming Manual

Appendix C
The proper use of wire and cable is necessary for the successful installation and operation of
the LightSYS system. It is important to select wire of the correct thickness to minimize power
loss and ensure reliable system operation. Take into account both the installation's current
requirements and the wiring distances involved. The following tables provide useful
information to help make your installation fault-free.
AWG
Gauge
Size
24
22
20
19
18
16
14
Table A-1: Wire Facts
One-Way Wire Distance
Between LightSYS and
Plug-In Transformer
In Meters
Up to 5
5 - 8
8 - 12
12 - 20
20 - 30
Table A-2: Wiring Between the LightSYS Main Panel and the Plug-In Transformer
Wiring
Wire Diameter
Millime Inches
ters
0.50 0.020
0.64 0.025
0.80 0.031
0.90 0.035
1.00 0.040
1.27 0.050
1.63 0.064
AWG (American Wire Gauge)
For best results use the indicated wire size
or larger (numerically lower) size
In Feet
Up to 15
15 - 25
25 - 40
40 - 60
60 - 100
Resistance:
Meters
Ω Per Ω Per
Meter 100
Meters
0.085
0.052
0.032
0.026
0.020
0.013
0.008
22 20
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Resistance: Feet
Ω
Per
Foot
8.5 0.026
5.2 0.016
3.2 0.010
2.6 0.008
2.0 0.006
1.3 0.004
0.82 0.0025
18 16
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Wiring
Ω Per
1000 Feet
26.0
16.0
10.0
8.0
6.0
4.0
2.5
14
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