Juniper EX4300 Hardware Manual page 208

EX4300 Switch Hardware Guide
186
Ensure that you have taken the necessary precautions to prevent electrostatic discharge
(ESD) damage (see "Prevention of Electrostatic Discharge Damage" on page
Ensure that you have connected the device chassis to earth ground.
CAUTION: Before you connect power to the switch, a licensed electrician
must attach a cable lug to the grounding cable that you supply. 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 EX4300 switch 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
an EX Series Switch" on page
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
Switch" on page
Install the power supply in the chassis. For instructions on installing a power supply in
an EX4300 switch, see "Installing an AC Power Supply in an EX4300 Switch" on page
Ensure that you have the following parts and tools available:
A power cord appropriate for your geographical location (provided)
NOTE: Each power supply must be connected to a dedicated power source
outlet.
To connect AC power to an EX4300 switch:
Attach the grounding strap to your bare wrist and to a site ESD point.
1.
NOTE: The power supply slots are at the right end of the rear panel on
24-port and 48-port switches, and at the left end on 32-port
switches.Figure 50 on page 187
to an AC power supply installed on 24-port or 48-port EX4300 switches.
The procedure is the same for 32-port EX4300 switches.
Ensure that the power supplies are fully inserted in the chassis and the latches are
2.
secure. If only one power supply is installed, ensure that a cover panel is installed over
the second power supply slot.
179. An EX4300 switch gains additional
"AC Power Cord Specifications for an EX4300
100).
shows how to connect an AC power cord
Copyright © 2017, Juniper Networks, Inc.
313).
"Connecting Earth Ground to
233.