CHAPTER 2 INSTALLATIONPrecautionsNEAX2000 IVS 2 Installation Procedure ManualPage 38 ND-70928 (E), Issue 1.0PRECAUTIONSGrounding RequirementsThe system grounding must have a specific ground resistance and AC noise level, and is to beconnected to a predetermined terminal in the PBX. Standard grounding requirements are asshown below:• Communication grounding : Less than 10 ohm• Protective ground for PIM : Less than 10 ohmNOTE: 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 orinsulated equipment grounding conductors shall have a continuous outer finish that is eithergreen, or green with one or more yellow stripes. The equipment grounding connector is tobe connected to ground at the service equipment.• The attachment-plug receptacles in the vicinity of the NEAX2000 IVS2 are all to be of agrounding type, and the equipment grounding conductors serving these receptacles are tobe connected to earth ground at the service equipment.CAUTIONGrounding circuit continuity is vital for safe operation of telecommunication equipment. Neveroperate this equipment with the grounding conductor disconnected.
