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C3453M-B (4/09) 11
Table C describes the recommended maximum distances for 24 VAC applications, which are calculated with a 10 percent voltage drop. (Ten
percent is generally the maximum allowable voltage drop for AC-powered devices.)
For example, an enclosure that requires 30 VA and is installed 94 feet (28 m) from the transformer would require a minimum wire gauge of
20 AWG.
Maintenance
Clean the window regularly to maintain picture clarity. Use a soft cloth and a mild, nonabrasive detergent and water.
Table C. 24 VAC Wiring Distances
Wire Gauge
Total VA 20 AWG (0.5 mm
2
) 18 AWG (1.0 mm
2
) 16 AWG (1.5 mm
2
) 14 AWG (2.5 mm
2
)
10 283 ft (86 m) 451 ft (137 m) 716 ft (218 m) 1142 ft (348 m)
20 141 ft (42 m) 225 ft (68 m) 358 ft (109 m) 571 ft (174 m)
30 94 ft (28 m) 150 ft (45 m) 238 ft (54 m) 380 ft (115 m)
40 70 ft (21 m) 112 ft (34 m) 179 ft (54 m) 285 ft (86 m)
50 56 ft (17 m) 90 ft (27 m) 143 ft (43 m) 228 ft (69 m)
Table D. Video Coaxial Cable Wiring Distance
Cable Type* Maximum Distance
RG59/U
RG6/U
RG11/U
750 ft (229 m)
1,000 ft (305 m)
1,500 ft (457 m)
*Minimum Cable Requirements:
75-ohm impedance
All-copper center conductor
All-copper braided shield with 95% braid coverage