Connecting The Safety Ground; Attaching The Ground Wires - Avaya G450 Installing And Upgrading

- 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
WARNING:
dedicated power equipment room, then connections to this ground must be made
by a licensed electrician.

Connecting the safety ground

Proper grounding of the G450 Media Gateway 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 G450.
!
DANGER:
Connection of both grounds (through the AC Power Cord and the Supplementary
DANGER:
Ground Conductor) is required for safe operation of the G450 Media Gateway.
!
WARNING:
An improper ground can cause electrical shock as well as equipment failures and
WARNING:
service outages.

Attaching the ground wires

1. Place the ring terminal of the 10 AWG (4.0 mm
ground screw that was provided in the accessories box.
2. Insert the ground screw on the rear of the chassis adjacent to the ground symbol 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 chassis) 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 mm
the ground block and the other end to an approved ground.
Step 4: Attaching ground conductors
2
) Supplementary Ground Conductor on the
2
) ground wire to one of the terminals in
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