Nebs Supplemental Unit Bonding And Grounding Guidelines - Cisco ASR 9001-S Hardware Installation Manual

Site Requirement Guidelines

NEBS Supplemental Unit Bonding and Grounding Guidelines

Although the router chassis requires a safety earth ground connection as part of the power cabling to
power modules, you must permanently connect the central office ground system or interior equipment
grounding system to the supplemental bonding and grounding connection on the side of the router
chassis to meet network equipment building system (NEBS) requirements as well as safety compliance
requirements. These grounding points are referred to as the NEBS bonding and grounding points.
Figure 1-22
These bonding and grounding connections satisfy the Telcordia NEBS requirements for supplemental
Note
bonding and grounding connections. If you are not installing the router in a NEBS environment, you can
choose to bypass these guidelines and rely on the safety earth ground connections to the AC or DC power
modules.
Figure 1-22 NEBS Bonding and Grounding Points on the Cisco ASR 9001 Router
1 NEBS grounding point on side of chassis
To ensure a satisfactory supplemental ground connection to the router, use these parts:
•
•
Cisco ASR 9001 and Cisco ASR 9001-S Routers Hardware Installation Guide
1-20
shows the NEBS grounding locations for the Cisco ASR 9001 Router.
One grounding lug, which has two M6 bolt holes with 0.625- to 0.75-inch (15.86- to 19.05-mm)
spacing between them, and a wire receptacle large enough to accept a six AWG or larger, multistrand
copper wire. For four AWG cable, use Panduit part number LCD4-14AF-L; for six AWG, use
Panduit part number LCD6-14AF-L.
Two 10-32 round-head screws and two locking washers (nickel-plated brass is ideal).
Chapter 1
1
Preparing for Installation
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