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About installation and cabling
Issue 9.1 June 2006 119
Connecting the Safety Ground
Proper grounding of the G700 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 G700 Media Gateways.
!
WARNING:
WARNING: Connection of both grounds (through the AC or DC Power Cord and the
Supplementary Ground Conductor) is required for safe operation of the G700
Media Gateway.
!
WARNING:
WARNING: An improper ground can cause electrical shock as well as equipment failures and
service outages.
To attach the ground wires
1. Remove the ground screw on the rear of the chassis adjacent to the ground symbol:
2. Place the ring terminal of the 10 AWG (4.0 mm
2)
Supplementary Ground Conductor on the
screw.
3. Replace the ground screw to the chassis and securely tighten the screw such that it cannot
be loosened without the use of a tool.
The ground block is provided for use with more than one G700 (or other Cajun devices) in the
rack. It is usually mounted by the customer electrician.
If the ground block has been purchased: Proceed with step 4; otherwise, proceed with
step 7
.
4. 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.
5. Attach one end of the remaining 10 AWG (4mm
2
) ground wire to one of the terminals in the
ground block and the other end to an approved ground.
6. Cut this ground wire to the length needed to reach the approved ground.
Do not coil this wire.