Installation Manual

Dahua 2-inch Network Speed Dome Installation Manual
7
5 APPENDIX 12V DC WIRE GAUGE AND TRANSMISSION
DISTANCE RELATIONSHIP SHEET
The recommended max transmission distance is under the following environments: The wire
diameter is fixed and the DC 12V power voltage loss rate is below 10%. For the device of DC
power supplying, the max allowed voltage loss rate is 10%. All the wires listed in the following
sheet are copper wire. (Copper wire resistance
)
mm
Feetm
w
0.8000
1.250
5
122.13
37.23
298.1790.88
10
61.0618.61
149.0845.44
15
40.7112.41
99.3930.29
20
30.539.31
74.5422.72
25
24.437.45
59.6318.18
30
20.356.20
49.6915.15
35
17.455.32
42.6012.98
40
15.274.65
37.2711.36
45
13.574.14
33.1310.10
50
12.213.72
29.829.09
55
11.103.38
27.118.26
60
10.183.10
24.857.57
65
9.392.86
22.946.99
70
8.722.66
21.306.49
75
8.142.48
12.723.88
19.886.06
50.8915.51
80
7.632.33
18.645.68
85
7.182.19
17.545.35
90
6.782.07
16.565.05
95
6.431.96
15.694.78
100
6.111.86
14.914.54