Power Requirements; Power Cable Size And Length Requirements - GE Security Legend IP Installation Manual

Power requirements

All Legend IP 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).
Be aware that Legend IP domes have greater power requirements than do CyberDome or analog Legend
domes, which may require upgrading the power cabling for Legend IP domes.
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 without heater/blower
Dome with heater/blower
Rugged and HD dome with 25 W heater/blower

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 for the different models of domes.
Table 4. Recommended power cable gauges based on maximum lengths for an operating voltage of 24 VAC (±4 VAC)
Wire gauge
AWG mm
2
10 2.60
12 2.05
14 1.62
16 1.29
18 1.02
20 0.81
22 0.64
Domes without
heater/blower
(30 W)
feet meters
1565 477
985 300
620 189
390 119
245 75
150 46
95 29
Start-up power Running power
30 W
60 W
100 W
Domes with
heater/blower
(60 W)
feet meters
780 238
490 149
310 94
195 59
120 37
75 23
45 14
24 W
44 W
74 W
HD domes with
heater/blower
(100 W)
feet meters
470
295
185
115
70
45
25
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