Cisco Nexus 7000 Series - Connecting the DC Power Supply Unit to a Power Source through a PIU; Grounding the PIU; Installing the PIU in a Rack; Required Tools and Equipment

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5-13
Cisco Nexus 7000 Series Hardware Installation and Reference Guide
OL-23069-06
Chapter 5 Installing Power Supply Units
Connecting a DC Power Supply Unit to DC Power Sources
This section includes the following topics:
• Required Tools and Equipment, page 5-13
• Installing the PIU in a Rack, page 5-13
• Grounding the PIU, page 5-15
• Connecting the DC Power Supply Unit to a Power Source through a PIU, page 5-16
Required Tools and Equipment
To install a power interface unit, you need the following tools and materials:
• PIU.
• Two mounting brackets.
• Four M6 x 19 mm and four 12-24 x 3/4” Phillips screws.
• Grounding lug—A two-holed standard barrel lug that supports up to 6 AWG wire.
• Grounding nuts—Two M6 nuts.
• Grounding wire—This wire should be sized to meet local and national installation requirements. For
U.S. installations, you must provide a 6 AWG copper conductor. For installations outside the U.S.,
consult your local and national electrical codes. The length of the grounding wire depends on the
proximity of the switch to proper grounding facilities. You must supply this wire.
• Wire-stripping tool to remove the insulation from the grounding wire.
• Number 1 Phillips screwdriver.
• Crimping tool to crimp the grounding wire to the grounding lug.
• Power cables—one for 3-kW output power or two for 6 kW output power. Each cable is 4.6 meters
(15 feet) in length with one plug at one end and terminal lugs on each of four inputs.
• Power cables that connect the PIU to the power source. These cables need to be sized to meet local
and national electrical codes.
Installing the PIU in a Rack
To install a PIU in a rack, follow these steps:
Step 1 Position and fasten the two mounting brackets in one of four ways shown in Figure 5-9.