Cisco ASR 14000 Series Installation Manual page 25

Chapter 2 Installing and Removing Power Components
These bonding and grounding receptacles 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 connection for the AC- and
DC-input PDUs.
Figure 2-1
1 NEBS supplemental bonding and grounding points
If you plan to connect the routing system to a network equipment building system (NEBS)-compliant
supplemental bonding and grounding system at the site, you must have the following:
A minimum of one ground lug that has two M6 bolt holes with 0.625-inch (15.86-mm) spacing
•
between them, and a wire receptacle large enough to accept a 6-AWG or larger multistrand copper
wire. The lug is similar to the type used for the DC-input power supply leads (see
ground lug is not available from Cisco Systems. This type of lug is available from
electrical-connector vendors, such as Panduit (see
Two M6 or equivalent hex-head bolts with locking washers (nickel-plated brass is ideal) and nuts.
•
These bolts, locking washers, and nuts are not available from Cisco Systems; they are available from
any commercial hardware vendor.
A ground wire. Although we recommend at least 6-AWG multistrand copper wire, the actual wire
•
diameter and length depend on your router location and site environment. This wire is not available
from Cisco Systems; it is available from any commercial cable vendor.
Caution The DC Return of the Cisco ASR 14000 series 8-slot line card chassis should remain isolated from the
system frame and chassis (DC-I: Isolated DC Return).
OL-16973-01
NEBS Bonding and Grounding Points (Rear of Chassis)
1
Information About Installing and Removing the Power Components
Figure
Cisco ASR 14000 Series Router 8-Slot Line Card Chassis Installation Guide
Figure
2-3).
2-3). This
2-3