Juniper QFX3500, Hardware Documentation

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Connecting Earth Ground to QFX3600 or QFX3600-I Devices
To meet safety and electromagnetic interference (EMI) requirements and to ensure proper operation, you
must connect the QFX3600 and QFX3600-I devices to earth ground before you connect it to power.
For installations that require a separate grounding conductor to the chassis, use the protective earthing
terminal on the left rear of the chassis to connect to the earth ground (see Figure 86 on page 309 ).
Before you connect earth ground to the protective earthing terminal of a QFX3600 or QFX3600-I device,
ensure that a licensed electrician has attached an appropriate grounding lug to the grounding cable.
CAUTION: Using a grounding cable with an incorrectly attached lug can damage the
switch.
NOTE: Mount your device in the rack or cabinet before attaching the grounding lug to the switch.
See “Mounting a QFX3600 or QFX3600-I Device on Two Posts in a Rack or Cabinet” on page 301
and “Mounting a QFX3600 or QFX3600-I Device on Four Posts in a Rack or Cabinet” on page 303 .
Ensure that you have the following parts and tools available:
•
Grounding cable for your QFX3600 or QFX3600-I device—The grounding cable must be 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 LCD10-10A-L or
equivalent. This grounding lug is provided in the accessory kit.
•
Two M5 screws with integrated washers—The screws are used to secure the grounding lug to the
protective earthing terminal. The screws are provided in the accessory kit.
•
Phillips (+) screwdriver, number 2.
An AC-powered QFX3600 or QFX3600-I device chassis gains 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 a QFX Series Device” on page 154 .
To connect earth ground to a QFX3600 or QFX3600-I device:
1. Connect one end of the grounding cable to a proper earth ground, such as the rack in which the device
is mounted.
2. Place the grounding lug attached to the grounding cable over the protective earthing terminal.
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