Pelco Spectra IV SE manual Wire Gauge Total VA, Table C. UTP Wiring Distances

1.Locate the center point of the mounting location and insert the compass tool. Draw a circle.

2.Cut the circle out of the ceiling.

3.Attach the conduit fitting, lock nut, and safety chain bracket. Install a safety chain/cable (not supplied) that will support up to 16 pounds (7.3 kg).

4.Open the hinged door to the back box. Push the tab lock towards the wall of the unit and lift the door open. Pull wiring into the back box through the conduit fitting. Refer to Table A, Table B, and Table C for wiring distances.

5.Install the back box by compressing the spring clips and pushing the back box through the hole. Tighten the screws until you hear a clicking noise.

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)

*Cable requirements: 75 ohms impedance

All-copper center conductor All-copper braided shield with 95% braid coverage

Table B. 24 VAC/24VDC Wiring Distances

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

AC/DC		Wire Gauge
Total VA/	20 AWG	18 AWG	16 AWG	14 AWG
Total Watts	(0.5 mm2)	(1.0 mm2)	(1.5 mm2)	(2.5 mm2)
23 VA/	123 ft	196 ft	311 ft	495 ft
15 watts	(38 m)	(60 m)	(95 m)	(151 m)
73 VA/	39 ft	62 ft	98 ft	156 ft
65 watts	(12 m)	(19 m)	(30 m)	(48 m)

NOTE: Input power for the dome is 24 VAC or 24 VDC. Using 24 VAC input power, power consumption is 23 VA per dome for indoor models and 73 VA for outdoor models. Using 24 VDC input power, power consumption is 0.7 A (15 watts) for indoor models and 3 A (65 watts) for outdoor models.

Use a 24 VAC transformer with the following minimum VA:

40 VA per dome	For indoor models (without heater)
100 VA per dome	For outdoor models (with heater)
.	Table C. UTP Wiring Distances
	Receiver	Maximum Distance
	Active	0-3,000 ft
	(Video Only)	(0-914.4 m)
	Passive	0-750 ft
	(Video, Coaxitron, Pelco V-Sync)	(0-228.6 m)

NOTE: As a minimum, UTP requires Cat5, 100-ohm twisted pair cable.

C3417M-B (11/06) 3