Juniper Networks EX4200 - Manual (Page 172)

■ Connecting AC Power to an EX8200 Switch
■ Connecting DC Power to an EX8200 Switch
■ Connecting and Configuring an EX Series Switch (CLI Procedure) on page 161
■ Connecting and Configuring an EX Series Switch (J-Web Procedure) on page 163
■ General Safety Guidelines and Warnings for EX Series Switches on page 207
■ Grounded Equipment Warning for EX Series Switches on page 226
Connecting AC Power to an EX3200 or EX4200 Switch
The power supply in an EX3200 or EX4200 switch is a hot-removable and
hot-insertable field-replaceable unit (FRU) located on the rear panel: You can remove
and replace it without powering off the switch or disrupting switch functions.
Ensure that you have a power cord appropriate for your geographical location available
to connect AC power to an EX3200 or EX4200 switch.
Before you begin connecting AC power to an EX3200 or EX4200 switch:
■ Ensure that you have taken the necessary precautions to prevent ESD damage
(see “Prevention of Electrostatic Discharge Damage on EX Series Switches” on
page 236).
■ Ensure that you have connected the switch chassis to earth ground.
CAUTION: Before you connect power to the switch, 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 switch (for example, by causing a short
circuit).
To meet safety and electromagnetic interference (EMI) requirements and to ensure
proper operation, you must connect EX3200 and EX4200 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 Series Switch” on page 141. An EX3200 or EX4200
switch gets 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 Cord Specifications for EX3200 and EX4200
Switches” on page 98).
■ Install the power supply in the chassis. For instructions on installing a power
supply in an EX3200 or EX4200 switch, see “Installing a Power Supply in an
EX3200 or EX4200 Switch” on page 130.
146 ■ Connecting AC Power to an EX3200 or EX4200 Switch
Complete Hardware Guide for EX3200 and EX4200 Ethernet Switches