54
Annex
Ⅱ
: 24VAC line gauge and transmission distance relationship
If the line gauge is specified, and the loss of 24VAC voltage is less than 10%, the recommended maximum transmission distance is shown as
table below. (For AC equipment, the maximum permissible voltage loss is 10%. For example: the rated power of one equipment is 80VA,
installed at the place 35 feet away from the transformer (10m), the required minimum line gauge is 0.8000mm.
Line gauge (mm)
Distance feet
(m)
Power va
0.8000 1.000 1.250 2.000
10
283
(
86
)
451
(
137
)
716
(
218
)
1811
(
551
)
20
141
(
42
)
225
(
68
)
358
(
109
)
905
(
275
)
30
94
(
28
)
150
(
45
)
238
(
72
)
603
(
183
)
40
70
(
21
)
112
(
34
)
179
(
54
)
452
(
137
)
50
56
(
17
)
90
(
27
)
143
(
43
)
362
(
110
)
60
47
(
14
)
75
(
22
)
119
(
36
)
301
(
91
)
70
40
(
12
)
64
(
19
)
102
(
31
)
258
(
78
)
80
35
(
10
)
56
(
17
)
89
(
27
)
226
(
68
)
90
31
(
9
)
50
(
15
)
79
(
24
)
201
(
61
)
100
28
(
8
)
45
(
13
)
71
(
21
)
181
(
55
)
110
25
(
7
)
41
(
12
)
65
(
19
)
164
(
49
)