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User Manual of HD-TVI Speed Dome
Appendix 3 24VAC Wire Gauge & Transmission Distance
The following table describes the recommended Max. distance adopted for the certain wire gauge
when the loss rate of 24VAC voltage is less than 10%. For the AC driven device, the maximum
voltage loss rate is 10% allowable. For example, for a device with the rating power of 80VA which is
installed at a distance of 35 feet (10m) away from the transformer, then 0.8000mm is required as
the minimum wire gauge.
Wire Gauge
Distance
(mm)
(feet)
Power (va)
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
0.8000
1.000
283(86)
451(137)
141(42)
225(68)
94(28)
150(45)
70(21)
112(34)
56(17)
90(27)
47(14)
75(22)
40(12)
64(19)
35(10)
56(17)
31(9)
50(15)
28(8)
45(13)
25(7)
41(12)
23(7)
37(11)
21(6)
34(10)
20(6)
32(9)
18(5)
30(9)
17(5)
28(8)
16(4)
26(7)
15(4)
25(7)
14(4)
23(7)
14(4)
22(6)
1.250
2.000
716(218)
1811(551)
358(109)
905(275)
238(72)
603(183)
179(54)
452(137)
143(43)
362(110)
119(36)
301(91)
102(31)
258(78)
89(27)
226(68)
79(24)
201(61)
71(21)
181(55)
65(19)
164(49)
59(17)
150(45)
55(16)
139(42)
51(15)
129(39)
47(14)
120(36)
44(13)
113(34)
42(12)
106(32)
39(11)
100(30)
37(11)
95(28)
35(10)
90(27)
44
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