Pelco PDF8 Series Table A. Video Coaxial Cable Requirements, Table B. 24 VAC Wiring Distances

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Table A. Video Coaxial Cable Requirements

EXAMPLE: An enclosure that requires 80 vA and is in- stalled 35 feet (10 m) from the transformer would re- quire a minimum wire gauge of 20 AWG.

NOTE: Wire gauges are standard AWG or metric sizes. Distances are calcu- lated in feet; values in parentheses are meters.

Table A. Video Coaxial Cable Requirements

Cable Type*

Maximum Distance

 

 

RG59/U

750 ft (229 m)

RG6/U

1,000 ft (305 m)

RG11/U

1,500 ft (457 m)

 

 

*Minimum cable requirements: 75 ohms impedance All-copper center conductor

All-copper braided shield with 95% braid coverage

Table B. 24 VAC Wiring Distances

The following are the recommended maximum distances for 24 VAC applications and are calculated with a 10-percent voltage drop. (Ten percent is generally the maximum allowable voltage drop for AC-powered devices.)

Wire Gauge

Total

20

18

16

14

12

10

vA

(0.5 mm2)

(1.0 mm2)

(1.5 mm2)

(2.5 mm2)

(4.0 mm2)

(6.0 mm2)

10

283

451

716

1142

1811

2880

 

(86)

(137)

(218)

(348)

(551)

(877)

 

 

 

 

 

 

 

20

141

225

358

571

905

1440

 

(42)

(68)

(109)

(174)

(275)

(438)

 

 

 

 

 

 

 

30

94

150

238

380

603

960

 

(28)

(45)

(72)

(115)

(183)

(292)

 

 

 

 

 

 

 

40

70

112

179

285

452

720

 

(21)

(34)

(54)

(86)

(137)

(219)

 

 

 

 

 

 

 

50

56

90

143

228

362

576

 

(17)

(27)

(43)

(69)

(110)

(175)

 

 

 

 

 

 

 

60

47

75

119

190

301

480

 

(14)

(22)

(36)

(57)

(91)

(146)

 

 

 

 

 

 

 

70

40

64

102

163

258

411

 

(12)

(19)

(31)

(49)

(78)

(125)

 

 

 

 

 

 

 

80

35

56

89

142

226

360

 

(10)

(17)

(27)

(43)

(68)

(109)

 

 

 

 

 

 

 

90

31

50

79

126

201

320

 

(9)

(15)

(24)

(38)

(61)

(97)

 

 

 

 

 

 

 

100

28

45

71

114

181

288

 

(8)

(13)

(21)

(34)

(55)

(87)

 

 

 

 

 

 

 

110

25

41

65

103

164

261

 

(7)

(12)

(19)

(31)

(49)

(79)

 

 

 

 

 

 

 

120

23

37

59

95

150

240

 

(7)

(11)

(17)

(28)

(45)

(73)

 

 

 

 

 

 

 

130

21

34

55

87

139

221

 

(6)

(10)

(16)

(26)

(42)

(67)

 

 

 

 

 

 

 

140

20

32

51

81

129

205

 

(6)

(9)

(15)

(24)

(39)

(62)

 

 

 

 

 

 

 

150

18

30

47

76

120

192

 

(5)

(9)

(14)

(23)

(36)

(58)

 

 

 

 

 

 

 

160

17

28

44

71

113

180

 

(5)

(8)

(13)

(21)

(34)

(54)

 

 

 

 

 

 

 

170

16

26

42

67

106

169

 

(4)

(7)

(12)

(20)

(32)

(51)

 

 

 

 

 

 

 

180

15

25

39

63

100

160

 

(4)

(7)

(11)

(19)

(30)

(48)

 

 

 

 

 

 

 

190

14

23

37

60

95

151

 

(4)

(7)

(11)

(18)

(28)

(46)

 

 

 

 

 

 

 

200

14

22

35

57

90

144

 

(4)

(6)

(10)

(17)

(27)

(43)

 

 

 

 

 

 

 

Maximum distance from transformer to load

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Pelco PDF8 Series Table A. Video Coaxial Cable Requirements, Table B. 24 VAC Wiring Distances, Wire Gauge, Cable Type