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• Cable Length and Wire Gauge
24 V AC
The recommended cable length and thick-
ness are shown in the table for reference.
The voltage supplied to the power terminals
of the camera should be within 19.5 V AC
and 28 V AC.
Recommended wire gauge for 24 V AC line.
Copper wire
#24
(0.22 mm
size (AWG)
(m)
20
Length of
Cable
(Approx.)
(ft)
66
12 V DC
Use the formula below to calculate the power
cable and power supply. The voltage sup-
plied to the power terminals of the camera
should be within 10.5 V DC and 16 V DC.
Resistance of copper wire [at 20 °C {68 °F}]
Copper wire
#24
(0.22 mm
size (AWG)
Resistance
0.078
Ω/m
Resistance
0.024
Ω/ft
10.5 V DC ≤ V
L : Cable length (m) {ft}
R : Resistance of copper wire (Ω/m)
{Ω/ft}
V
: DC output voltage of power supply
A
unit
I
: DC current consumption (A). See
specifications.
Important: When using 12 V DC power sup-
ply, the optional heater unit is unavail-
able.
24
#22
#20
2
2
2
)
(0.33 mm
)
(0.52 mm
)
(0.83 mm
30
45
100
150
#22
#20
2
2
2
)
(0.33 mm
)
(0.52 mm
)
(0.83 mm
0.050
0.03
0.015
0.009
- 2(R x I x L) ≤ 16 V DC
A
#18
2
)
75
250
#18
2
)
0.018
0.005
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