• General Safety Guidelines and Warnings on page 133
• Grounded Equipment Warning on page 150
Connecting AC Power to an EX3300 Switch
The power supply is built in along the rear panel, with an AC power cord inlet on the rear
panel.
Ensure that you have the following parts and tools available:
•
A power cord appropriate for your geographical location
•
A power cord retainer clip
Ensure that you have connected the switch chassis to earth ground.
CAUTION: To meet safety and electromagnetic interference (EMI)
requirements and to ensure proper operation, youmust connectthe switches
to earth ground before you connect them 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 EX SeriesSwitch”on page83. An EX3300 switch getsadditional 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 Cord Specifications for EX3300 Switches” on page 56).
To connect AC power to the switch:
1. Squeeze the two sides of the power cord retainer clip and insert the L-shaped ends
of the wire clip into the holes in the bracket on each side of the AC power cord inlet
(Figure 35 on page 92).
The power cord retainer clip extends out of the chassis by 3 in.
2. 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
EX3300 Switches” on page 56.
WARNING: Ensure that the power cord does not drape where people can
trip on it or block access to switch components.
3. Insert the coupler end of the power cord into the AC power cord inlet on the rear panel.
4. Push the power cord into the slot in the adjustment nut of the power cord retainer
clip. Turn the nut until it is tight against the base of the coupler and the slot in the nut
is turned 90° from the top of the switch (see Figure 36 on page 92).
5. If the AC power source outlet has a power switch, set it to the OFF (0) position.
91Copyright © 2011, Juniper Networks, Inc.
Chapter 11: Connecting the Switch
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