2 Installing Hardware for the G700 Media Gateway and S8300 Media Server: Installation and Cabling
82 Installation and Upgrades for G700 with S8300 or S8700
555-234-100 — Issue 3 — May 2003
WARNING:
!
If the installation location is greater than 50 feet (15 m) from an approved ground, do
not install the Avaya G700 Media Gateway until a licensed electrician is prese nt to
install a Supplementary Ground Conductor.
A 55-foot (16-m) Supplementary Ground Conductor is provided with the equipment, and is
constructed of 10 AWG (4.0 mm2) wire, with an insulated ring terminal crimped to one end that is
suitable for the #8 (M4) stud/screw on the rear of the G700 chassis.
The customer will need to provide a means of connecting this Supplementary Ground Conductor to
an approved ground according to Article 250 of the National Electrical Code (NEC).
A ground block is available for use when multiple G700 Media Gateways are being installed. The
ground block, intended for rack mounting, has ten terminals available for terminating Supplementary
Ground Conductors. Up to ten G700 Media Gateways can be grounded at the block installed close to
the equipment (on a rack) and then a single ground conductor can be routed from the same block to an
approved ground. If the ground block is to be used, it must be ordered separately.
WARNING:
!
Failure to install both grounds will void the Product Safety certifications (UL and the
CE Mark) on the product, as well as allow a hazard to be present that could result in
death or severe personal injury.
Because of unreliable earthing concerns in Finland and Norway, the G700 Media Gateway must be
installed in a restricted access location. A restricted access location is defined as access that can be
gained by only Service Personnel or Customers who have been instructed about the reasons for the
restricted access and any safety precautions that must be taken. In these cases, access to the G700
Media Gateway is gained by the use of a tool (such as a lock and key) or other means of security.
WARNING:
!
For Installations in Finland and Norway, the Avaya G700 Media Gateway relies on two
ground connections (mains plug with an earth contact, and a Supplementary Ground
Conductor).
Approved Grounds
An approved ground is the closest acceptable medium for grounding the building entrance protector,
entrance cable shield, or a single-point ground of electronic telephony equipment. If more than one
type of approved ground is available on the premises, the grounds must be bonded together as
required in Section 250-81 of the NEC for the US or per the local electrical code regulations in the
country of installation.
• Grounded Building Steel: The metal frame of the building where it is effectively grounded by one
of the following grounds: acceptable metallic water pipe, concrete encased ground, or a ground
ring.
• Acceptable Water Pipe: A metal underground water pipe, at least 1/2-in. (1.3 cm) in diameter, in
direct contact with the earth for at least 10 ft. (3m). 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