ZM111317
14
7
APPENDIX Ⅱ 24V AC WIRE GAUGE AND TRANSMISSION
DISTANCE RELATIONSHIP SHEET
It is the recommended 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 141 inches (42m)
from the transformer, 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
)