CHAPTER 2 INSTALLATION
Precautions
NEAX2000 IVS
2
Installation Procedure Manual
Page 38
ND-70928 (E), Issue 1.0
PRECAUTIONS
Grounding Requirements
The system grounding must have a specific ground resistance and AC noise level, and is to be
connected to a predetermined terminal in the PBX. Standard grounding requirements are as
shown below:
• Communication grounding : Less than 10 ohm
• Protective ground for PIM : Less than 10 ohm
NOTE:
The AC ripple on these various grounds should be less than 0.5Vp-p.
The following specific requirements apply to ground wiring.
• An equipment grounding conductor that is at least as large as the ungrounded branch-
supply conductors is to be installed as part of the circuit that supplies the NEAX2000 IVS
2
.
Bare, covered, or insulated grounding conductors are acceptable. Individually covered or
insulated equipment grounding conductors shall have a continuous outer finish that is either
green, or green with one or more yellow stripes. The equipment grounding connector is to
be connected to ground at the service equipment.
• The attachment-plug receptacles in the vicinity of the NEAX2000 IVS
2
are all to be of a
grounding type, and the equipment grounding conductors serving these receptacles are to
be connected to earth ground at the service equipment.
CAUTION
Grounding circuit continuity is vital for safe operation of telecommunication equipment. Never
operate this equipment with the grounding conductor disconnected.
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