Grounding Cable And Lug Specifications For Ex8200 Switches - Juniper EX8216 Hardware Manual

EX8216 Switch Hardware Guide
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Grounding Cable and Lug Specifications for EX8200 Switches

134
P = 6 dBm
M
The calculated power margin is greater than zero, indicating that the link has sufficient
power for transmission. Also, the power margin value does not exceed the maximum
receiver input power. Refer to the specification for your receiver to find the maximum
receiver input power.
Calculating the EX Series Switch Fiber-Optic Cable Power Budget on page 131
Understanding EX Series Switches Fiber-Optic Cable Signal Loss, Attenuation, and
Dispersion on page 146
Pluggable Transceivers Supported on EX Series Switches on page 138
To ensure proper operation and to meet safety and electromagnetic interference (EMI)
requirements, you must connect an EX Series switch to earth ground before you connect
power to the switch. You must use the protective earthing terminal on the switch chassis
to connect the switch to earth ground.
WARNING: The switch is installed in a restricted-access location. It has a
separate protective earthing terminal on the chassis that must be permanently
connected to earth ground to adequately ground the chassis and protect the
operator from electrical hazards.
CAUTION: Before switch installation begins, 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.
Grounding requirements for EX8200 switches:
EX8208 switches—A pair of threaded inserts (PEM nuts) is provided on the right side
toward the top rear corner of the EX8208 chassis for connecting the switch to earth
ground. The grounding points fit UNC ¼-20 screws. The grounding points are spaced
at 0.625 in. (15.86 mm).
The grounding cable that you provide for an EX8208 switch must be 2 AWG (33.6
2
mm ), minimum 60°C wire, or as permitted by the local code.
Figure 37 on page 135 shows the grounding lug that attaches to the grounding cable in
an EX8208 switch.
Copyright © 2017, Juniper Networks, Inc.