Table 5: Cable length guidelines for recommended wire sizes
Guideline
Wire size/Gauge and type
Maximum cable length
and type
Assumptions
1.0 mm² (18 AWG) stranded
copper
457 m (1,500 ft) twisted
wire
0.8 mm (20 AWG) stranded
copper 297 m (975 ft) twisted
wire
297 m (975 ft) twisted
wire
0.6 mm (22 AWG) stranded
copper 183 m (600 ft) twisted
wire
183 m (600 ft) twisted
wire
A
24 AWG stranded copper 107 m
(350 ft) twisted wire
107 m (350 ft) twisted
wire
100 mV maximum
voltage drop
Depending on the
cable length and the
connected input or
output device, you may
have to define an offset
in the setup software
for the input or output
point.
1.0 mm² (18 AWG) stranded
copper
229 m (750 ft) twisted
wire
0.8 mm (20 AWG) stranded
copper 297 m (975 ft) twisted
wire
137 m (450 ft) twisted
wire
0.6 mm (22 AWG) stranded
copper 183 m (600 ft) twisted
wire
91 m (300 ft) twisted
wire
B
24 AWG stranded copper 107 m
(350 ft) twisted wire
61 m (200 ft) twisted
wire
100 mV maximum
voltage drop
Depending on the
cable length and the
connected input or
output device, you may
have to define an offset
in the setup software
for the input or output
point.
C
See Figure 12 to select wire size/
gauge.
Use stranded copper wire.
See Figure 12 to
determine cable length.
Use twisted wire cable.
N/A
Figure 12: Maximum wire length by current and wire size
FX-PCV1826/1832 Programmable VAV Box Controller Installation Instructions
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