Chapter 3 Installing a Cisco Nexus 7018 Chassis

Grounding the Cisco Nexus 7018 Chassis

Se n d d o c u m e n t c o m m e n t s t o n ex u s 7 k - d o c f e e d b a ck @ c i s c o . c o m

Grounding the Cisco Nexus 7018 Chassis

The Cisco Nexus 7018 system is grounded through the AC power supply cables and one of two grounding connections on the chassis. The AC power supply cables provide a connection to an earth ground whenever you connect the AC power to the system. The system ground, also referred to as the network equipment building system (NEBS) ground, provides additional grounding for EMI shielding requirements and for the low-voltage supplies (DC-DC converters) on the modules. This grounding system is active even when the AC power cables are not connected to the system. You establish this ground by connecting one of the two grounding pads on the chassis to the rack (if it is connected to an earth ground) or directly to the earth ground for the data center building.

This section includes the following topics:

•Prerequisites for Grounding the Chassis, page 3-11

•Required Tools and Equipment, page 3-11

•Connecting the System Ground, page 3-12

•Connecting Your ESD Strap to the Chassis, page 3-13

Prerequisites for Grounding the Chassis

Before you can ground the chassis, you must have a connection to the earth ground for the data center building. If you installed the Cisco Nexus 7018 chassis into a bonded rack (see the rack manufacturer’s instructions for more information) that now has a connection to the data center earth ground, you can ground the chassis by connecting its ground ports to the rack. Otherwise, you must connect the chassis grounding ports directly to the data center ground.

Required Tools and Equipment

To connect the system ground, you need the following tools and materials:

•Grounding lug—A two-holed standard barrel lug that supports up to 6 AWG wire. This lug is supplied with the Cisco Nexus 7018 system accessory kit.

•Grounding screws—Two M4 x 8 mm (metric) pan-head screws. These screws are shipped with the Cisco Nexus 7018 system accessory kit.

•Grounding wire—Not supplied with the Cisco Nexus 7018 system accessory kit. This wire should be sized to meet local and national installation requirements. Depending on the power supply and system, a 12 AWG to 6 AWG copper conductor is required for U.S. installations. We recommend that you use commercially available 6 AWG wire. The length of the grounding wire depends on the proximity of the switch to proper grounding facilities.

•No. 1 Phillips screwdriver.

•Crimping tool to crimp the grounding wire to the grounding lug.

•Wire-stripping tool to remove the insulation from the grounding wire.

 

 

Cisco Nexus 7000 Series Hardware Installation and Reference Guide

 

 

 

 

 

 

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Cisco Systems N6KC600164P, 7000, N7KC7004 Grounding the Cisco Nexus 7018 Chassis, Prerequisites for Grounding the Chassis
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N6KC600164P, UCSCPCIECSC02, N7KF248XP25E, N7KF248XT25E, N7KF248XT25EP1 specifications

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