20
6
APPENDIX Ⅲ THE AC 24V WIRE DIAMETER AND
TRANSMISSION DISTANCE RELATION TABLE
It is to recommend the max transmission distance when the cable diameter is fixed and the 24V
AC power consumption is below 10%. For the AC device, the max permission voltage power
consumption is 10%. For example, when a device of rated power 20W installed from the
transformer 141 inches (42m), then the min cable diameter is 0.8000mm.
mm
Feet
(
m
)
w
0.8000
1.000
1.250
2.000
5
488.52
(
148.90
)
763.31
(
232.66
)
1192.67
(
363.53
)
3053.25
(
930.63
)
10
244.26
(
74.45
)
381.66
(
116.33
)
596.34
(
181.76
)
1526.62
(
465.31
)
15
162.84
(
49.63
)
254.44
(
77.55
)
397.56
(
121.18
)
1017.75
(
310.21
)
20
122.13
(
37.23
)
190.83
(
58.16
)
298.17
(
90.88
)
763.31
(
232.66
)
25
97.70
(
29.78
)
152.66
(
46.53
)
238.53
(
72.71
)
610.65
(
186.13
)
30
81.42
(
24.82
)
127.22
(
38.78
)
198.78
(
60.59
)
508.87
(
155.10
)
35
69.79
(
21.27
)
109.04
(
33.24
)
170.38
(
51.93
)
436.18
(
132.95
)
40
61.06
(
18.61
)
95.41
(
29.08
)
149.08
(
45.44
)
381.66
(
116.33
)
45
54.28
(
16.54
)
84.81
(
25.85
)
132.52
(
40.39
)
339.25
(
103.40
)
50
48.85
(
14.89
)
76.33
(
23.27
)
119.27
(
36.35
)
305.32
(
93.06
)
55
44.41
(
13.54
)
69.39
(
21.15
)
108.42
(
33.05
)
277.57
(
84.60
)
60
40.71
(
12.41
)
63.61
(
19.39
)
99.39
(
30.29
)
254.44
(
77.55
)
65
37.58
(
11.45
)
58.72
(
17.90
)
91.74
(
27.96
)
234.87
(
71.59
)
70
34.89
(
10.64
)
54.52
(
16.62
)
85.19
(
25.97
)
218.09
(
66.47
)
75
32.57
(
9.93
)
50.89
(
15.51
)
79.51
(
24.24
)
203.55
(
62.04
)
80
30.53
(
9.31
)
47.71
(
14.54
)
74.54
(
22.72
)
190.83
(
58.16
)
85
28.74
(
8.76
)
44.90
(
13.69
)
70.16
(
21.38
)
179.60
(
54.74
)
90
27.14
(
8.27
)
42.41
(
12.93
)
66.26
(
20.20
)
169.62
(
51.70
)
95
25.71
(
7.84
)
40.17
(
12.25
)
62.77
(
19.13
)
160.70
(
48.98
)
100
24.43
(
7.45
)
38.17
(
11.63
)
59.63
(
18.18
)
152.66
(
46.53
)
Содержание DH-SD49212I-HC
Страница 22: ...15 Figure 3 6 ...