Juniper Networks EX8208 manual Connecting Earth Ground to an EX4200 Switch

Chapter 10: Connecting the Switch

3.Secure the grounding lug to the protective earthing terminal with screws.

4.Dress the grounding cable and ensure that it does not touch or block access to other switch components and that it does not drape where people could trip over it.

Connecting Earth Ground to an EX4200 Switch

The protective earthing terminal is located on the left side of the chassis in an EX4200 switch.

An AC-powered EX Series switch chassis gets additional grounding when you plug the power supply in the switch into a grounded AC power outlet by using an AC power cord appropriate for your geographical location. See AC Power Cord Specifications for EX3200 and EX4200 Switches.

Ensure that you have the following parts and tools available:

•Grounding cable for your EX4200 switch—The grounding cable must be minimum 14 AWG (2 mm²), minimum 90°C wire, or as permitted by the local code.

•Grounding lug for your grounding cable—The grounding lug required is a Panduit LCD6-14BH-L or equivalent.

•Washers and 10-32x.25-in. screws to secure the grounding lug to the protective earthing terminal

NOTE: Some early models of EX4200 switches require 10-24x.25-in. screws rather than 10-32x.25-in. screws. If the Juniper Networks product number on the label next to the protective earthing terminal is from 750-021xxx through 750-030xxx, the switch requires 10-24x.25-in. screws.

•Phillips (+) screwdriver, number 2

To connect earth ground to an EX4200 switch:

1.Connect one end of the grounding cable to a proper earth ground, such as the rack in which the switch is mounted.

2.Place the grounding lug attached to the grounding cable over the protective earthing terminal. See Figure 64 on page 167.

If you mounted an EX4200 switch on four posts of a rack using the four-post rack-mount kit, the protective earthing terminal on the switch is accessible through the slot on the left rear bracket. See Figure 65 on page 170.

NOTE: The protective earthing terminal on an EX4200 switch mounted on four posts is available only if the rack is 27.5 in. deep through 30.5 in. deep for a switch mounted flush with the rack front and 29.5 in. deep through 32.5 in. deep for a switch mounted 2 in. recessed from the rack front.

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