A cable with an incorrectly attached lug can damage the switch (for
example, by causing a short circuit).
To meet safety and electromagnetic interference (EMI) requirements and
to ensure proper operation, you must connect the chassis to earth ground
before you connect it to power. For installations that require a separate
grounding conductor to the chassis, use the protective earthing terminal
on the switch chassis to connect to the earth ground. For instructions on
connecting earth ground, see “Connecting Earth Ground to an EX4600
Switch” on page 146. The switch gains additional grounding when you plug
the power supply in the switch into a grounded AC power outlet by using
the AC power cord appropriate for your geographical location (see “AC
Power Supply in an EX4600 Switch” on page 23).
•
Install the power supply in the chassis. For instructions on installing a power supply in
an EX4600 switch, see “Installing a Power Supply in an EX4600 Switch” on page 168.
NOTE: Each power supply must be connected to a dedicated power source
outlet.
To connect AC power to an EX4600 switch:
1. Attach the grounding strap to your bare wrist and to a site ESD point.
2. Ensure that the power supplies are fully inserted in the chassis and the latches are
secure. If only one powersupply is installed, ensure a that blankcover panel is installed
over the second power supply slot.
3. Locate the power cord or cords shipped with the switch; the cords have plugs
appropriate for your geographical location. See “AC Power Cord Specifications for an
EX4600 Switch” on page 79.
WARNING: Ensure that the power cord does not block access to device
components or drape where people can trip on it.
4. Connect each power supply to the power sources. Insert the coupler end of the power
cord into the AC power cord inlet on the AC power supply faceplate.
5. Push the power cord retainer onto the power cord (see Figure 22 on page 149).
Copyright © 2014, Juniper Networks, Inc.148
EX4600 Switch Hardware Guide
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