Panasonic WV-CW504F User Manual (en)

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31
• 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 
c a b l e 
(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.