Mx2020 Router Grounding Cable Lug Specifications; Mx2020 Router Grounding Cable Specifications; Figure 158: Connecting Chassis Grounding Points On The Mx2020 Router; Figure 159: Grounding Cable Lug - Juniper MX2020 Hardware Manual

MX2020 Router Grounding Cable Lug Specifications

MX2020 Router Grounding Cable Specifications

Copyright © 2013, Juniper Networks, Inc.
Appendix D: Power Guidelines, Requirements, and Specifications for the MX2020 Router

Figure 158: Connecting Chassis Grounding Points on the MX2020 Router

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–powered or DC–powered routers, connect a grounding cable to earth
ground and then attach it to the chassis grounding points using two screws. The top pair
of grounding points fits UNC 1/4–20 screws (American), and the lower pair fits M6 screws
(European). The grounding points are spaced at 0.625-in. (15.86-mm) centers. The cable
lugs get attached to the grounding
screws are used to secure the grounding cable to the top pair of grounding points.
WARNING: The router is a pluggable type A equipment installed in a restricted
access location. It has a separate protective earthing terminal (Metric [–M6]
and English [–¼-20] screw ground lugs) provided on the chassis in addition
to the grounding pin of the power supply cord. This separate protective earth
terminal must be permanently connected to earth.

Figure 159: Grounding Cable Lug

End view
0.27
0.55
2 holes
0.09
0.25 0.63
The 48 VDC facility must be equipped with a circuit breaker rated 60 A (–48 VDC), or
80 A (–48 VDC) for each PDM input, and the grounding cable must be minimum 10 AWG,
or as required by the local code.
cableFigure 159 on page 381, and the two UNC 1/4–20
All measurements in inches
381