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8
APPENDIX Ⅳ THE RELATIONSHIP BETWEEN DC 12V
CABLE DIAMETER AND TRANSMISSION DISTANCE
The max transmission distance is recommended when the cable diameter is fixed and DC 12V
voltage loss rate is lower than 10%. For the DC power supply devices, the max allowed voltage
loss rate is 10%. The cables used in the following table are all copper wire (the copper resistivity
is
).
mm
Feet
(
m
)
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
30.53
(
9.31
)
47.71
(
14.54
)
74.54
(
22.72
)
190.83
(
58.16
)
25
24.43
(
7.45
)
38.17
(
11.63
)
59.63
(
18.18
)
152.66
(
46.53
)
30
20.35
(
6.20
)
31.80
(
9.69
)
49.69
(
15.15
)
127.22
(
38.78
)
35
17.45
(
5.32
)
27.26
(
8.31
)
42.60
(
12.98
)
109.04
(
33.24
)
40
15.27
(
4.65
)
23.85
(
7.27
)
37.27
(
11.36
)
95.41
(
29.08
)
45
13.57
(
4.14
)
21.20
(
6.46
)
33.13
(
10.10
)
84.81
(
28.85
)
50
12.21
(
3.72
)
19.08
(
5.82
)
29.82
(
9.09
)
76.33
(
23.27
)
55
11.10
(
3.38
)
17.35
(
5.29
)
27.11
(
8.26
)
69.39
(
21.15
)
60
10.18
(
3.10
)
15.90
(
4.85
)
24.85
(
7.57
)
63.61
(
19.39
)
65
9.39
(
2.86
)
14.68
(
4.47
)
22.94
(
6.99
)
58.72
(
17.90
)
70
8.72
(
2.66
)
13.63
(
4.15
)
21.30
(
6.49
)
54.52
(
16.62
)
75
8.14
(
2.48
)
12.72
(
3.88
)
19.88
(
6.06
)
50.89
(
15.51
)
80
7.63
(
2.33
)
11.93
(
3.64
)
18.64
(
5.68
)
47.71
(
14.54
)
85
7.18
(
2.19
)
11.23
(
3.42
)
17.54
(
5.35
)
44.90
(
13.69
)
90
6.78
(
2.07
)
10.60
(
3.23
)
16.56
(
5.05
)
42.41
(
12.93
)
95
6.43
10.04
15.69
40.17
Summary of Contents for SD6CE series
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Page 22: ...14 Figure 3 5 ...
Page 26: ...18 Figure 4 6 ...