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Cisco AC/DC Power System User Guide, R1.0
May 2006
Chapter 2 System Installation
2.2.3 Install the Ground Cable
2.2.3.1 Install the Cabinet/Rack Ground
The equipment rack should be bonded to the building principal ground busbar. Refer to the NEC, CEC,
ANSI T1-333, ETSI 300-386-TC, and local codes for guidelines on bonding telecom DC power
equipment to the building ground.
2.2.3.2 Install the System Shelf Ground
Step 1 Loosen the cover from the rear of the system shelf by loosening the four screws (Figure 2-9).
Figure 2-9 Removing the System Shelf Rear Cover
Step 2 Pull out from the bottom and lift up to remove.
Step 3 Locate the #10 studs at the rear of the system shelf (Figure 2-10).
Step 4 Using a UL-listed 6 AWG (16mm²) wire with an insulation rated to at least 75°C, connect the shelf to
the appropriate cabinet connection point. The connection at the shelf end is made using a UL-listed
double-hole lug 1/4in and 5/8in. center-to-center (lug part # Panduit LCD6-14A-L or equivalent)
(Figure 2-10).
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