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Dahua SD6C230U-HNI - 10 Appendix Ⅳ the Relationship between DC 12 V Cable Diameter and Transmission Distance

Dahua SD6C230U-HNI
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29
10 APPENDIX THE RELATIONSHIP BETWEEN DC 12V
CABLE DIAMETER AND TRANSMISSION DISTANCE
It is the recommended max transmission distance when the cable diameter is fixed and the DC
12V power consumption is lower than 10%. For the DC power supply devices, the max allowed
voltage loss rate is 10%. The cable listed in the table below is copper wire (the resistivity of
copper is ρ=0.0175Ω*mm²/m).
mm
Feetm
w
0.8000
1.000
1.250
2.000
5
122.13
37.23
190.83
58.16
298.17
90.88
763.31
232.66
10
61.06
18.61
95.41
29.08
149.08
45.44
381.66
116.33
15
40.71
12.41
63.61
19.39
99.39
30.29
254.44
77.55
20
30.539.31
47.71
14.54
74.54
22.72
190.83
58.16
25
24.437.45
38.17
11.63
59.63
18.18
152.66
46.53
30
20.356.20
31.809.69
49.69
15.15
127.22
38.78
35
17.455.32
27.268.31
42.60
12.98
109.04
33.24
40
15.274.65
23.857.27
37.27
11.36
95.41
29.08
45
13.574.14
21.206.46
33.13
10.10
84.81
28.85
50
12.213.72
19.085.82
29.829.09
76.33
23.27
55
11.103.38
17.355.29
27.118.26
69.39
21.15
60
10.183.10
15.904.85
24.857.57
63.61
19.39
65
9.392.86
14.684.47
22.946.99
58.72
17.90
70
8.722.66
13.634.15
21.306.49
54.52
16.62
75
8.142.48
12.723.88
19.886.06
50.89
15.51
80
7.632.33
11.933.64
18.645.68
47.71
14.54
85
7.182.19
11.233.42
17.545.35
44.90
13.69
90
6.782.07
10.603.23
16.565.05
42.41
12.93
95
6.431.96
10.043.06
15.694.78
40.17
12.25
100
6.111.86
9.542.91
14.914.54
38.17

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