User Manual

December 16, 2002 Part 003609A revision 01 63
Chapter 4: Installation Procedures
Ground the NPM Racks
Each rack requires a ground cable connecting the PDP to the building’s
grounding system. A frame ground cable connects the NPM frame to the PDP,
ensuring that the frame and its attached components are grounded.
Figure 4.4 shows the cables used to ground the NPM. For clarity, the PDP rear
cover is not depicted.
Figure 4.4 Ground Cables
 To ground the NPM racks
1 If necessary, remove the PDP rear cover. The rear cover attaches to the PDP
using four #1 Phillips screws.
2 Ensure that all the circuit breakers on the PDP are in the OFF (down) position.
3 Connect the main ground cable to the building’s grounding system using a
minimum of #6 AWG stranded copper wire.
4 Terminate the main ground cable with a two-hole compression lug. Apply an anti-
oxidant solution to the cable before attaching the compression lug.
NOTE: When crimping the compression lug, ensure that you
are using the appropriate tool. Compression lugs for #6 AWG wire
are colored blue and require that a blue die be used with the
crimping tool.
00279
Main Ground Cable
Frame Ground Cable