6
IV. DC12V
Wire Diameter VS. Transmission Distance
The recommended
max
transmission
distance when
the
wire
diameter
is
certain
and
the
DC12V voltage
loss
rate
is less
than
10
%
(For DC12V powered devices, the maximum allowed voltage loss rate is 10%. All the
wires in the following table are cooper wires, whose electrical resistivity is
ρ
= 0.0175Ω
*
mm2/m
)
Diameter
(mm)
0.8
(
20AWG
)
1.0(18AWG )
1.25(16AWG)
2.0(12AWG )
5
38
(
125
)
61
(
199
)
96
(
315
)
244
(
801
)
10
19
(
63
)
30
(
99
)
48
(
157
)
122
(
400
)
15
13
(
42
)
20
(
66
)
32
(
105
)
81
(
267
)
20
10
(
31
)
15
(
50
)
24
(
79
)
61
(
200
)
25
8
(
25
)
12
(
40
)
19
(
63
)
49
(
160
)
30
6
(
21
)
10
(
33
)
16
(
52
)
41
(
133
)
35
5
(
18
)
9
(
28
)
14
(
45
)
35
(
114
)
40
5
(
16
)
8
(
25
)
12
(
39
)
31
(
100
)
45
4
(
14
)
7
(
22
)
11
(
35
)
27
(
89
)
50
4
(
13
)
6
(
20
)
10
(
31
)
24
(
80
)
55
3
(
11
)
6(
18
)
9
(
29
)
22
(
73
)
60
3
(
10
)
5
(
17
)
8
(
26
)
20
(
67
)
65
Note 1
5
(
15
)
7
(
24
)
19
(
62
)
70
Note 1
4
(
14
)
7
(
22
)
17
(
57
)
75
Note 1
4
(
13
)
6
(
21
)
16
(
53
)
80
Note 1
4
(
12
)
6
(
20
)
15
(
50
)
85
Note 1
4
(
12
)
6
(
19
)
14
(
47
)
90
Note 1
3
(
11
)
5
(
17
)
14
(
44
)
95
Note 1
3
(
10
)
5
(
17
)
13
(
42)
100
Note 1
3
(
10
)
5
(
16
)
12
(
40
)
Distance
(m)
Power (W)
[Note]:
1. When the transmission power is over 60W, you must use wires with diameter of 1.0 (18AWG) or above;
2. The requirements of diameter apply to single, solid and round cooper wire. The AWG value of multi-stranded
wires is dependent on the total CSA (Cross Sectional Area) of all wires.