Power Requirements; Power Cable Size And Length Requirements - GE CyberDome II Installation Manual

Power requirements

All CyberDome II domes require a 24 VAC power supply to operate the domes' PTZ, camera, and heater/
blower, if present. The startup and running power requirements vary depending on the model (Table 3).
CAUTION: Use only a Class 2 power supply of the required output rating as listed on individual units and specified.
Table 3. Power requirements at 24 VAC (±4 VAC) operating voltage
Model
Dome with fan
Dome with 12 W heater/fan (x2)
Rugged and HD dome with 23 W heater/fan (x2)

Power cable size and length requirements

Using the proper gauge of power cable will ensure proper operation and avoid voltage drops. See Table 4 for the
recommended cable gauge for varying maximum cable lengths and power draws.
WARNING: Be aware that the power requirements for CyberDome II and CyberDome are different, which may require
new cabling when replacing CyberDomes with CyberDome II domes.
Table 4. Recommended power cable gauges based on maximum lengths for an operating voltage of 24 VAC (±4 VAC)
Wire gauge
AWG mm2
10 2.60
12 2.05
14 1.62
16 1.29
18 1.02
Start-up power
Domes with fan
(20 VA)
feet meters
1569 478
988 301
620 188
391 119
246 74
Running power
25 VA 20 VA
93 VA 45 VA
153 VA 66 VA
Domes with
12 W heater/blower (x2)
(45 VA)
feet meters
784
494
310
196
123
Minimum power source to use
40 VA
56 VA
100 VA
HD domes with
23 W heater/fan (x2)
(66 VA)
feet
238 490
150 309
94 194
59 122
37 77
Chapter 1 7
Introduction
meters
149
94
59
37
23