Figure 2-18: Grounding And Power Surge Protection - AudioCodes MediaPack Installation Manual

The MP-124 chassis is equipped with a protective earthing screw. Ensure that you connect
this to the grounding point using a suitable wire. Fasten the cable securely using a 6-32
UNC screw.
Note: Proper grounding is crucial to ensure the effectiveness of the primary protection
devices against power surges. Therefore, both the primary protector and the MP-124 must
be connected to the equipotential ground bus (in electrical switch board) that is connected
directly to the grounding of the foundation reinforcement conductor.
Before installation, loop-testing grounding measurements must be done by a certified
electrician to verify the quality of the grounding connection. The grounding impedance must
not exceed 0.5 ohm.
The figure below illustrates the connection method for grounding and lightning protector.
Telephone Lines
Outside Building
Installation Manual

Figure 2-18: Grounding and Power Surge Protection

Main Distribution Frame (MDF)
Tip
Stranded
Wire
10 mm 2
Ring
Primary Lightning
Protection (CIRCA)
To Foundation
Reinforcement/Ring Conductor (Ground)
Telecommunication Room
26 AWG
Equipotential
Ground Bus Bar
Equipotential Ground Bus
in Electrical Board
28
MediaPack Series
Equipment Rack
50-Pin Telco for
Telephone Lines
MP-124
Stranded Wire
2
6 mm
MP-124
Document #: LTRT-59811