Avaya DEFINITY ONE Installation And Upgrades page 61

Installation and Upgrades for DEFINITY ONE and
IP600 Internet Protocol Release 10 555-233-109
1 Install and Cable the Cabinet
Check AC power and ground for Avaya IP600I
Acceptable Water Pipe — A metal underground water pipe, at least 1/2 inch (1.3
cm) in diameter, in direct contact with the earth for at least 10 feet (3 m). The pipe
must be electrically continuous (or made electrically continuous by bonding
around insulated 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 1 of the following types of grounds:
Other local metal underground systems or structures — Local underground
structures such as tanks and piping systems
Rod and pipe electrodes — A 5/8-inch (1.6-cm) solid rod or 3/4-inch (2-cm)
conduit or pipe electrode driven to a minimum depth of 8 feet (2.4 m)
Plate electrodes — Must have a minimum of 2 square feet
(0.185 square m) of metallic surface exposed to the exterior soil
Concrete Encased Ground — An electrode encased by at least 2 inches
(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 feet (6.1 m) of 1 or more steel reinforcing bars or rods 1/2-inch (1.3 cm) in
diameter, or at least 20 feet (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 feet (0.76 m) below the earth's surface. The ground ring must be at
least 20 feet (6.1 m) of 2 AWG (35 mm
Approved floor grounds
!
WARNING:
If the approved ground is inside a dedicated equipment room, these
connections must be made by a qualified electrician.
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:
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 the purpose
2
), bare, copper wire.
Issue 6
December 2001
1-21
2
) wire.