17-18
Cisco ONS 15454 Procedure Guide, R5.0
March 2005
Chapter 17 DLPs A1 to A99
DLP-A16 Connect the Office Ground to the ONS 15454
DLP-A16 Connect the Office Ground to the ONS 15454
Step 1 Verify that the office ground cable (#6 AWG stranded) is connected to the top of the bay according to
local site practice.
Step 2 Attach one end of the shelf ground cable (#10 AWG) to the right side of the backplane ground nut. See
Figure 17-9 for the location of the ground on the backplane.
Note When terminating a frame ground, use the Kepnut provided with the ONS 15454 and tighten it
to a torque specification of 31 in-lb (0.36 m-kg). The Kepnut provides a frame ground
connection that minimizes the possibility of loosening caused by rotation during installation and
maintenance activity. The type of prevention the Kepnut provides for the frame ground
connection is inherently provided by the terminal block for battery and battery return
connections.
Figure 17-9 Ground Location on the Backplane
Step 3
Attach the other end of the shelf ground cable to the bay.
Step 4 Return to your originating procedure (NTP).
Purpose This task connects ground to the ONS 15454 shelf.
Tools/Equipment #2 Phillips screwdriver
Medium slot-head screwdriver
Small slot-head screwdriver
Screws
Power cable (from fuse and alarm panel to assembly), #10 AWG, copper
conductors, 194 degrees Fahrenheit [90 degrees Celsius])
Ground cable #6 AWG stranded
Listed pressure terminal connectors such as ring and fork types; connectors
must be suitable for #10 AWG copper conductors
Prerequisite Procedures DLP-A10 Remove the Lower Backplane Cover, page 17-10
Required/As Needed Required
Onsite/Remote Onsite
Security Level None
FRAME GROUND
61852
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