Installation Manual
12
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)