Advertisement
joints, plastic pipe, or plastic water meters) to the
point where the protector ground wire connects. A
metallic underground water pipe must be
supplemented by the metal frame of the building, a
concrete-encased ground, or a ground ring. If these
grounds are not available, the water pipe ground
can be supplemented by one of the following types
of grounds:
- Other local metal underground systems or struc-
tures, such as tanks and piping systems.
- Rod and pipe electrodes. A 5/8-in. (1.6 cm)
solid rod or 3/4-in. (2 cm) conduit or pipe elec-
trode driven to a minimum depth of 8 ft.
(2.4 m).
- Plate electrodes. Must have a minimum of
2 sq. ft. (0.185 sq. m) of metallic surface
exposed to the exterior soil.
• 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
• 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
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 i40 installation safeguards the
system, users, and service personnel by providing pro-
tection from lightning, power surges, AC mains faults,
power crosses on central office trunks, and electro-
static discharge (ESD).
2
) wire.
Local electrical installation codes must be followed
when installing the i40.
DANGER:
Connection of both grounds (through the AC
Power Cord and the Supplementary Ground Conductor) is
required for safe operation of the i40.
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 i40
adjacent to the ground symbol.
2. Place the ring terminal of the 14 AWG (1.5 mm
Supplementary Ground Conductor on the screw.
3. Replace the ground screw on the i40 and securely
tighten the screw such that it cannot be loosened
2
without the use of a tool.
),
4. Attach the Supplementary Ground Conductor to an
approved ground.
Connect
Connect your Avaya Distributed Office to your
telephones, computers, and network. Refer to the
enclosed Installation Poster for information.
Connect your computer to the Services port on the i40,
using an Ethernet cable.
5
2
)
Advertisement
