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

6 CyberDome II
Installation Manual

Cable requirements

Table 3 lists the requirements for the cables that connect to the dome.
Table 3.

Cable requirements

Operation
Data
Video
Alarm
Relay contacts
Power
Note: When using UTP cable for video and data, the wires can share the same jacket but must remain separate twisted pairs.

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.
Table 4. Recommended power cable gauges based on maximum lengths for an operating voltage of 24 VAC (±4 VAC)
Wire gauge
AWG mm (dia.)
10 2.60
12 2.05
14 1.62
16 1.29
18 1.02
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.
Cable requirement
For RS-422: 22 gauge (0.64 mm) unshielded, two-conductor, twisted-pair (UTP)
cable
For RS-485: 22 gauge (0.64 mm) shielded, two-conductor, twisted-pair (STP) cable
75 ohm coaxial cable (RG59 with lift/gain)
22 gauge (0.64 mm) unshielded, two-conductor, twisted-pair (UTP) cable
Note: Use only crimp-on BNC connectors. Do not use screw-on connectors.
Cat-5 cable (recommended)
Cat-5 cable (recommended). Contacts rated for 60 W DC, 62.5 W AC with 2 A max.
24 VAC cable. To determine the size of cable needed for individual applications, see
length requirements.
Domes with fan (20 VA)
feet meters
1569 478
988 301
620 188
391 119
246 74
Domes with
12 W heater/fan (x2) (45 VA)
feet meters
784 238
494 150
310 94
196 59
123 37
Length
feet meters
10,000 3,000
3,000 900
1,600 486
1,250 381
1,250 381
1,250 381
Power cable size and
HD domes with
23 W heater/fan (x2) (66 VA)
feet meters
490 149
309 94
194 59
122 37
77 23