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Washersand10-32x.25-in.screwstosecurethegroundinglugtotheprotectiveearthing
terminal
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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. Placethe groundinglugattachedtothe groundingcableovertheprotectiveearthing
terminal. See Figure 52 on page 141.
NOTE: Ifyoumountedtheswitchonfourpostsofarackusingthefour-postrack-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 mountedon four posts is available only
ifthe rackis27.5in.deep through30.5in. deepfora switchmountedflushwiththe 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. Dressthe groundingcable and ensurethatit does nottouch orblockaccesstoother
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.
Ensure that you have the following parts and tools available:
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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.
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Grounding lug for your grounding cable. See Grounding Cable and Lug Specifications
for EX8200 Switches.
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Washersand¼-20x.75-in.screwstosecurethegroundinglugtotheprotectiveearthing
terminal
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Phillips (+) screwdriver, number 2
To connect earth ground to an EX8208 switch:
145Copyright©2010,Juniper Networks,Inc.
Chapter11:Connectingthe Switch