Precautions; Grounding Requirements - NEC NEAX 2000IVS2 Installation Manual

CHAPTER 2 INSTALLATION

Precautions

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.
Grounding circuit continuity is vital for safe operation of telecommunication equipment. Never
operate this equipment with the grounding conductor disconnected.
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
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
grounding type, and the equipment grounding conductors serving these receptacles are to
be connected to earth ground at the service equipment.
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CAUTION
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are all to be of a
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NEAX2000 IVS Installation Procedure Manual
ND-70928 (E), Issue 1.0
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