The following table defines cable length guidelines for the various wire sizes that may be used for wiring low-voltage (<30 V) input and outputs.
| Guideline | Wire size/gauge and type | Maximum cable length and type | Assumptions |
|---|---|---|---|
|
A |
1.0 mm (18 AWG) stranded copper |
457 m (1,500 ft) twisted wire |
100 mV maximum voltage drop Depending on cable and the connected input or output device, you may have to define an offset in the setup software for the input or output point. |
|
0.8 mm (20 AWG) stranded copper |
297 m (975 ft) twisted wire |
||
|
0.6 mm (22 AWG) stranded copper |
183 m (600 ft) twisted wire |
||
|
0.5 mm (24 AWG) stranded copper |
107 m (350 ft) twisted wire |
||
|
B |
1.0 mm (18 AWG) stranded copper |
229 m (750 ft) twisted wire |
100 mV maximum voltage drop Depending on cable and the connected input or output device, you may have to define an offset in the setup software for the input or output point. |
|
0.8 mm (20 AWG) stranded copper |
137 m (450 ft) twisted wire |
||
|
0.6 mm (22 AWG) stranded copper |
91 m (300 ft) twisted wire |
||
|
0.5 mm (24 AWG) stranded copper |
61 m (200 ft) twisted wire |
||
|
C |
See Figure 1 to select wire size/gauge. Use stranded copper wire. |
See Figure 1 to determine cable length. Use twisted wire cable. |
N/A |