• Cord length and wire gauge
24 V AC
The recommended cord length and copper
wire size are shown in the table for reference.
The voltage supplied to the camera should be
between 19.5 V AC and 28 V AC.
Recommended wire gauge for 24 V AC line.
Copper wire
size (AWG)
#24
(0.22 mm
2
)
#22
(0.33 mm
2
)
#20
(0.52 mm
2
)
#18
(0.83 mm
2
)
Length of
cable
(approx.)
m 20 30 45 75
ft 66 100 150 250
12 V DC
The recommended resisance and copper wire
size are shown in the table for reference.
The voltage supplied to the camera should be
between 10.8 V DC and 16 V DC.
Resistance of copper wire [20 °C {68 °F}]
Copper wire size
(AWG)
#24
(0.22 mm
2
)
#22
(0.33 mm
2
)
#20
(0.52 mm
2
)
#18
(0.83 mm
2
)
Resistance (Ω/m) 0.078 0.050 0.03 0.018
Resistance (Ω/ft) 0.024 0.015 0.009 0.005
Use the formula below to calculate the power
cord and power supply.
"L", "R", "V
A", "I" shall satisfy the inequalitty
below.
10.8 V DC ≤ V
A - 2(R x I x L) ≤ 16 V DC
L: Cord length (m) {ft}
R: Resistance of copper wire (Ω/m) {Ω/ft}
V
A: DC output voltage of power supply unit
I: DC current consumption (A). See speci-
fications.
Important:
• When using 12 V DC power supply, the
heater is unavailable.
To Next Page
