Connecting the T640 Grounding Cable
You ground the T640 router by attaching a grounding cable to the grounding points on
the chassis. You must provide the grounding cable (the cable lugs are supplied with the
router). For grounding cable specifications, see “T640 Chassis Grounding Cable and Lug
Specifications” on page 118.
1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
the strap to an approved site ESD grounding point. See the instructions for your site.
2. Make sure that grounding surfaces are clean and brought to a bright finish before
grounding connections are made.
3. Connect the grounding cable to a proper earth ground.
4. Verify that a licensed electrician has attached the cable lug provided with the router
to the grounding cable.
5. Place the grounding cable lug over the grounding The left pair is sized for M6 bolts,
and the right pair is sized for UNC 1/4-20 bolts.
6. Secure the grounding cable lug to the grounding points, first with the washers, then
with the screws.
7. Verify that the grounding cabling is correct, that the grounding cable does not touch
or block access to router components, and that it does not drape where people could
trip on it.
Related
Documentation
• T640 General Electrical Safety Guidelines and Electrical Codes on page 529
• Site Electrical Wiring Guidelines for Juniper Networks Devices on page 538
Copyright © 2017, Juniper Networks, Inc.208
T640 Core Router Hardware Guide
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