iPECS UCM
Installation Manual Issue 1.1
35
3.3.1.4 UCM-MGC3 Grounding
Before connection to power, the UCM-MGC3 must be connected to a protective earth ground in
conformance with the appropriate IEEE recommendations. A protective earth ground is required for
user safety and to minimize EMC interference.
To ensure proper system operation and safety purposes, it is important to be required a protective earth
ground. Connect to the communication ground of the building where available.
If AC power ground is used without separate communication ground, check induction of noise from other
equipment. For wiring, see the system power and ground cable wiring diagram.
A 8 AWG UL type 1015 or thicker copper wire is recommended as the protective earth ground connection wire.
However, check the appropriate national and local codes for proper conductor type and size.
The wire should be kept as short as possible; it is recommended that the wire be no longer than 1 meter
(about 3.3 feet).
For protective ground , unscrew the FGND terminal of the terminal block on the rear side of the cabinet,
connect the ground cable and tighten the screw. Refer to Figure 3-10
1) Loosen the screw.
Connect the cabinet to the ground.
2) Insert the grounding wire.
3) Tighten the screw.
4) Connect the grounding wire to the ground.
Figure 3-10 UCM-MGC3 Grounding
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