The Juniper Networks MX10004 routers support AC, DC, high-voltage alternating current (HVAC), and
high-voltage direct current (HVDC) power supplies. To connect power to an MX10004 router, complete
the tasks in this section.
NOTE: Do not mix power supply models in the same chassis in a running environment.
Connect the MX10004 Router to Earth Ground
To meet safety and electromagnetic interference (EMI) requirements and to ensure proper operation,
you must connect the chassis to earth ground. Make this connection before you connect the router to
power.
You must install the Juniper Networks MX10004 router in a restricted-access location and ensure that
the chassis is always properly grounded.
The MX10004 has a two-hole protective grounding terminal provided on the chassis. See
. Under all circumstances, use this grounding connection to ground the chassis.
For AC-powered systems, you must also use the grounding wire in the AC power cord along with the
two-hole grounding lug connection. This tested system meets or exceeds all applicable EMC regulatory
requirements with the two-hole protective grounding terminal.
If an external ground connection is required, ensure that a licensed electrician has attached an
appropriate grounding lug to the grounding cable you supply.
WARNING: Using a grounding cable with an incorrectly attached lug can damage the
router.
NOTE: Mount your router in the rack before attaching the grounding lug to the router; see
"Mount the Juniper Networks MX10004 Router Using the JNP10004-RMK-4POST Rack-Mount
Kit" on page 120
Ensure that you have the following parts and tools available:
• An electrostatic discharge (ESD) grounding strap (provided).
• Protective earthing terminal lug (provided).
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