
ProSYS Installation and Programming Manual
7
AWG
Gauge
Size
Wire Diameter
Resistance: Feet
Resistance: Meters
Inches
Millimeters
Ω Per Foot
Ω Per 1000
Feet
Ω Per Meter
Ω Per 100
Meters
24
0.020
0.50 0.026
26.0 0.085
8.5
22
0.025
0.64 0.016
16.0 0.052
5.2
20
0.031
0.80 0.010
10.0 0.032
3.2
19
0.035 0.90 0.008 8.0
0.026 2.6
18
0.040 1.00 0.006 6.0
0.020 2.0
16
0.050 1.27 0.004 4.0
0.013 1.3
14
0.064 1.63 0.0025
2.5
0.008 0.82
Table
A-1: Wire Facts
One-Way Wire Distance Between
ProSYS and Plug-In Transformer
AWG (American Wire Gauge)
For best results use the indicated wire size
or larger (numerically lower) size
In Feet
In Meters
22
20
18
16
14
Up to 15 feet
Up to 5 meters
15 - 25 feet
5 - 8 meters
25 - 40 feet
8 - 12 meters
40 - 60 feet
12 - 20 meters
60 - 100 feet
20 - 30 meters
Table
A-2: Wiring Between the ProSYS Main Panel and the 16.5 VAC/40VA Plug-In Transformer
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’s customer support service for detailed
information.