iPECS eMG80
Hardware Description and Installation Manual Issue 1.0
65
6.2 Grounding the KSUs
Proper connection of the eMG80 KSUs to earth ground is very important to prevent user
contact with dangerous voltages and reduce electrical and RF interference. Assure that both
the KSU and EKSU are properly grounded as described below and shown in figure 6.2-1.
1. Turn the grounding screw counter clockwise with a screwdriver to loosen.
2. Insert the grounding wire and tighten the screw securely.
3. Then connect the grounding wire to an appropriate ground source (refer to Caution
below).
Figure 6.2-1 Grounding to the earth
CAUTION
This equipment should be connected to a socket-outlet with a protective ground
connection.
The Earth Ground wire shall have green-and-yellow insulation and the cross-
sectional area of the conductor must equal to or greater than UL 1015 AWG#18
(1.0mm).
Be sure to comply with applicable local regulations.
HIGH LEAKAGE CURRENT - Connect permanent earthing conductor before
connecting telephone lines.
A supplementary equipment earthing conductor is to be installed between the product
or system and earth, that is, in addition to the equipment earthing conductor in the
power supply cord.
The supplementary equipment earthing conductor may not be smaller in size than the
unearthed branch-circuit supply conductors. The supplementary equipment earthing
conductor is to be connected to the product at the terminal provided, and connected
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