Cable and Wire Length Guidelines - Verasys - Field Device

Table 1 defines cable length guidelines for the various wire sizes that may be used for wiring low-voltage (<30 V) input and output wiring.

Table 1. Cable Length Guidelines for Recommended Wire Sizes for Low-Voltage (<30 V) Inputs and Outputs
Guidelines	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

Cable and Wire Length Guidelines - Verasys - Field Device - VEC100