Approved Grounds - Avaya G430 Installation And Upgrades

AC Service Panel:
• AC ground at the AC service panel serving the Avaya equipment.
Danger:
• Do not perform work inside electrical panels unless you are a qualified electrician.
• Do not try to remove bonding conductors without approval from qualified personnel.
Metal Water Pipe:
The water pipe must meet all the following –
• The entire length of the pipe must be visible – except for short sections passing through walls,
ceilings, etc.
• Be metallic thorough its length, or made electrically continuous by bonding around insulation
joints or insulating pipe.
• Be routed underground for at least 3 meters (10 feet).
Where a metal water pipe is used as an approved ground the following requirements apply to the
host building:
• The building must be industrial, commercial, or institutional, where only qualified persons
service the water piping.
• The building shall not rely only on the metal water pipe for grounding: a supplemental ground is
required. (See NEC Article 250.53 for additional details.)
Metal Frame of the Building:
The metal frame member (I-beam, pillar) must be connected to earth by one of the following
methods –
• Be in direct contact with the earth, or encased in concrete that is in direct contact with the
earth, for at least 3 meters (10 feet).
• Be connected to the reinforcing bars of a concrete-encased electrode. The electrode must be
encased by at least 5.1 cm (2 inches) 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
6.1 meters (20 feet) of one or more steel reinforcing bars or rods, 1.3 cm (0.5 inches) in
diameter, or at least 6.1 meters (20 feet) of bare solid copper, 4 AWG (26mm
• Be connected to a ground ring. A ground ring is a buried ground that encircles a building,
having a length of at least 6.1 meters (20 feet) of 2 AWG (35mm
• Be connected to rod and pipe electrodes. A rod or pipe electrode consists of one 1.6 cm (5/8
inch) solid rod or 2 cm (3/5 inch) conduit driven to a minimum depth of 2.4 meters (8 feet).
• Be connected to plate electrodes. Plate electrodes have a minimum of 0.185 square meter (2
square feet) of metallic surface exposed to the exterior soil.
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 equipment single-point ground terminal.
Approved floor grounds may include the following:
• Metal Frame of the Building (in accordance with the criteria specified in
Building on page 37)
February 2017 Installation and Upgrades for the Avaya Branch Gateway G430
Comments on this document? infodev@avaya.com
Ground conductor attachments
2
) wire.
2
) bare copper wire.
Metal Frame of the
37