Juniper M320 Hardware Manual page 190

M320 Multiservice Edge Router Hardware Guide
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Two pairs of threaded inserts (PEM nuts) are provided on the right rear of the chassis for
connecting the router to earth ground. The left pair of grounding points fits M6 screws
(European), and the right pair fits UNC 1/4–20 screws (American). The grounding points
are spaced at 0.625-in. (15.86-mm) centers. The accessory box shipped with the router
includes the cable lug that attaches to the grounding cable (see
Cable and Lug Specifications" on page
and grounding cable specifications, see
CAUTION: Before router installation begins, a licensed electrician must attach
a cable lug to the grounding and power cables that you supply. A cable with
an incorrectly attached lug can damage the router.
To ground AC and DC powered routers:
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
1.
the strap to one of the ESD points on the chassis.
Connect the grounding cable to a proper earth ground.
2.
Verify that a licensed electrician has attached the cable lug provided with the router
3.
to the grounding cable.
Place the grounding cable lug over the grounding points on the bottom rear of the
4.
chassis. The left pair is sized for M6 bolts, and the right pair is sized for UNC 1/4-20
bolts.
Secure the grounding cable lug to the grounding points, first with the washers, then
5.
with the screws.
Preventing Electrostatic Discharge Damage to an M320 Router on page 318
General Electrical Safety Warnings for Juniper Networks Devices on page 341
"M320 Chassis Grounding
94) and two UNC 1/4–20 screws. For power cord
"M320 AC Power Cord Specifications" on page
Copyright © 2015, Juniper Networks, Inc.
102.