Juniper MX2010, Hardware Manual

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MX2000 Series Chassis Grounding Points Specifications
To meet safety and electromagnetic interference (EMI) requirements and to ensure proper operation, the
router must be adequately grounded before power is connected. To ground AC-powered or DC-powered
routers, you must connect a grounding cable to earth ground and then attach it to one of the chassis
grounding points using the two screws provided. (see Figure 57 on page 142 ).
Figure 66: Connecting to a Chassis Grounding Point on the MX2000 Series Router
MX2000 Series Router Grounding Cable Lug Specifications
CAUTION: Before you install the router, 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.
The chassis has two grounding points. The upper pair is sized for UNC 1/4-20 nuts, and the lower pair is
sized for M6 nuts. You only need to connect to one of the grounding points to properly ground the router.
The grounding points are spaced at 0.625-in. (15.86-mm) centers. To ground the router, attach cable lugs
to the grounding cable and secure the grounding cable to a grounding point on the chassis with two screws.
The router is shipped with two Standard UNC 1/4–20 screws for connecting to the top (left) 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 Standard
[–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.
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