Juniper Networks EX8208 - Manual (Page 197)

• Washers and 10-32x.25-in. screws to secure the grounding lug to the protective earthing
terminal
• Phillips (+) screwdriver, number 2
To connect earth ground to an EX4500 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.
NOTE: If you mounted the 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.
The protective earthing terminal on the 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.
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 EX8208 Switch
The protective earthing terminal is located on the left side of the chassis in an EX8208
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 an
EX8200 Switch” on page 112.
Ensure that you have the following parts and tools available:
• Grounding cable for your EX8208 switch—The grounding cable must be 6 AWG
(13.3 mm²), minimum 60°C wire, or as permitted by the local code.
• Grounding lug for your grounding cable. See “Grounding Cable and Lug Specifications
for EX8200 Switches” on page 87.
• Washers and ¼-20x.75-in. screws to secure the grounding lug to the protective earthing
terminal
• Phillips (+) screwdriver, number 2
To connect earth ground to an EX8208 switch:
171 Copyright © 2010, Juniper Networks, Inc.
Chapter 10: Connecting the Switch