Juniper QFX10008 Hardware Manual page 129

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Copyright © 2019, Juniper Networks, Inc.
QFX10000 modular chassis, connect a grounding cable to earth ground and then attach
it to the chassis grounding point on the rear of the chassis beneath.
NOTE: A ground connection to the protective earthing terminal is not required
for an AC powered switch. The AC power cords provide adequate grounding
when you connect the power supply in the switch to a grounded AC power
outlet by using the AC power cord appropriate for your geographical location.
WARNING: The switch is pluggable type A equipment installed in a
restricted-access location. It has a separate protective earthing terminal
provided on the chassis in addition to the grounding pin of the power supply
cord. This separate protective earthing terminal must be permanently
connected to earth ground for installations that require a separate grounding
conductor to the chassis.
WARNING: To comply with GR-1089 requirements, all intra-building copper
cabling used for SFP+, QSFP+, and QSFP28 ports must be shielded and
grounded at both ends.
CAUTION: If an external ground connection is required, ensure that a licensed
electrician has attached an appropriate grounding lug to the grounding cable
that you supply. Using a grounding cable with an incorrectly attached lug can
damage the switch. See
page 164. A cable with an incorrectly attached lug can damage the switch.
Before connecting the switch to earth ground, review the following information:
Two threaded inserts (PEM nuts) are provided on the lower rear of the chassis for
connecting the switch to earth ground. The grounding points are spaced at 0.63 in.
(16 mm) centers.
The grounding lug required is a Panduit LCD6-10A-L or equivalent (provided). The
grounding lug accommodates 6 AWG (13.3 mm²) stranded wire.
The grounding cable that you provide for a QFX10016 must be the same size or heavier
than the input wire of each power supply. Minimum recommendations are 6 AWG (13.3
mm²) stranded copper wire, Class B; 90° C wire, or as permitted by local code.
Connecting the QFX10000 to Power on page 163
QFX10000 AC Power System on page 50
QFX10000 DC Power System on page 59
Chapter 2: Site Planning, Preparation, and Specifications
"Connecting Earth Ground to a QFX10000" on
129