Chapter 10 Grounding The M40E Router; Connecting The M40E Grounding Cable - Juniper M40E Hardware Manual

CHAPTER 10
Grounding the M40e Router

Connecting the M40e Grounding Cable

Copyright © 2010, Juniper Networks, Inc.
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Connecting the M40e Grounding Cable on page 109
Ground the router by attaching a grounding cable to the chassis grounding points. The
grounding cable is not supplied with the router. For cable specifications, see "M40e
Chassis Grounding Specifications" on page 276.
To connect the grounding cable (see Figure 63 on page 110):
Verify that there is no power flowing from either external power source, so that the
1.
voltage across the leads of the power cables is 0 V. Ensure that there is no chance
that the cable leads might become active during the procedure.
For each power supply, verify that the power switch on the circuit breaker box is in the
2.
( ) position.
OFF O
Make sure that grounding surfaces are clean and brought to a bright finish before
3.
grounding connections are made.
Connect the grounding cable to a proper earth ground.
4.
Verify that a licensed electrician has attached the cable lug provided with the router
5.
to the grounding cable.
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
6.
the strap to an approved site ESD grounding point. See the instructions for your site.
Place the grounding cable lug over the grounding points. The grounding points are
7.
sized for 1/4-20 UNC screws.
Secure the grounding cable lug to the grounding points, first with the washers, then
8.
with the screws.
Verify that the grounding cabling is correct, that the grounding cable does not touch
9.
or block access to router components, and that it does not drape where people could
trip on it.
109