Required Tools And Equipment; Connecting A Dc Power Supply Unit To The Earth Ground - Cisco Nexus 7000 Series Hardware Installation And Reference Manual

Connecting a DC Power Supply Unit to DC Power Sources
S e n d d o c u m e n t c o m m e n t s t o n e x u s 7 k - d o c f e e d b a c k @ c i s c o . c o m

Required Tools and Equipment

To ground a DC power supply unit, you need the following tools and materials:
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Connecting a DC Power Supply Unit to the Earth Ground

Warning Installation of the equipment must comply with local and national electrical codes. Statement 1074
To connect the system ground to the data center earth ground, follow these steps:
Use a wire-stripping tool to remove approximately 0.75 inch (19 mm) of the covering from the end of
Step 1
the grounding wire.
Step 2 Insert the stripped end of the grounding wire into the open end of the grounding lug as shown in
Figure
Figure 5-1
1
Use the crimping tool to crimp the lug to the grounding wire. Verify that the ground wire is securely
Step 3
attached to the ground lug by attempting to pull the wire out of the crimped lug.
Remove the adhesive label from one of the power supply grounding pads, and secure the grounding wire
Step 4
lug to the grounding pad threaded studs with two M6 nuts.
grounding pads on the front side of the power supply unit. Ensure that the grounding lug and the
grounding wire do not interfere with other switch hardware or rack equipment.
Cisco Nexus 7000 Series Hardware Installation and Reference Guide
5-6
Grounding lug—A two-holed standard barrel lug that supports up to 6 AWG wire. You must supply
this lug.
Grounding nuts—Two M6 nuts. You must supply these nuts.
Grounding wire—This wire should be sized to meet local and national installation requirements. For
U.S. installations, you must use 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.
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.
5-1.
Inserting the Grounding Wire in the Grounding Lug
Grounding lug for 6 AWG grounding
cable
Chapter 5
2 6 AWG grounding cable with 0.75 in. (19 mm) of
insulation stripped from the end
Figure 5-2 shows the location of the
Installing Power Supply Units
OL-23069-06