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• Concrete Encased Ground. An electrode encased by
at least 2 in. (5.1 cm) of concrete and located
within and near the bottom of a concrete foundation
or footing in direct contact with the earth. The
electrode must be at least 20 ft. (6.1 m) of one or
more steel reinforcing bars or rods, 1/2-in. (1.3 cm)
in diameter, or at least 20 ft. (6.1 m) of bare solid
copper, 4 AWG (26 mm
2
) wire.
• Ground Ring. A buried ground that encircles a
building or structure at a depth of at least 2.5 ft
(0.76 m) below the earth’s surface. The ground ring
must be at least 20 ft. (6.1 m) of 2 AWG (35 mm
2
),
bare copper wire.
• Approved Floor Grounds. Floor grounds are those
grounds on each floor of a high-rise building that
are suitable for connection to the ground terminal
in the riser closet and to the cabinet single-point
ground terminal. Approved floor grounds may
include the following:
- Building steel.
- The grounding conductor for the secondary side
of the power transformer feeding the floor.
- Metallic water pipes.
- Power-feed metallic conduit supplying panel
boards on the floor.
- A grounding point specifically provided in the
building for that purpose.
WARNING:
If the approved ground or approved floor
ground can only be accessed inside a dedicated power
equipment room, then connections to this ground must be
made by a licensed electrician.
Connect the safety ground
Proper grounding of the i120 installation safeguards
the system, users, and service personnel by providing
protection from lightning, power surges, AC mains
faults, power crosses on central office trunks, and
electrostatic discharge (ESD).
Local electrical installation codes must be followed
when installing the i120.
DANGER:
Connection of both grounds (through the AC
Power Cord and the Supplementary Ground Conductor) is
required for safe operation of the i120.
WARNING:
An improper ground can cause electrical
shock as well as equipment failures and service outages.
Attaching the ground wires
1. Remove the ground screw on the rear of the i120
adjacent to the ground symbol.
2. Place the ring terminal of the 10 AWG (4.0 mm
2
)
Supplementary Ground Conductor on the screw.
3. Replace the ground screw on the i120 and securely
tighten the screw such that it cannot be loosened
without the use of a tool.
If the ground block has been purchased
1. Cut the Supplementary Ground Conductor (which
has one end attached to the grounding screw on the
i120) to the length needed to terminate it into one
of the terminals of the ground block. Do not coil the
Supplementary Ground Conductor.
2. Attach one end of the remaining 10 AWG (4 mm2)
ground wire to one of the terminals in the ground
block and the other end to an approved ground.
3. Cut this ground wire to the length needed to reach
the approved ground. Do not coil this wire.
Note:
The ground block is provided for use with more
than one i120 in the rack. It is usually mounted by the
customer electrician.
If the ground block is not being used
Attach the Supplementary Ground Conductor to an
approved ground.
Connect
Connect your Avaya Distributed Office to your
telephone, computers, and network. Refer to the
enclosed Installation Poster for information.
Connect your computer to the Services port on the
AM110, using an Ethernet cable.
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