Juniper Networks EX8208 - Manual (Page 66)

AC Power Supply in an EX8200 Switch
EX8200 switches can use either AC or DC power supplies. This topic describes the AC
power supplies in EX8200 switches:
• AC Power Supply Description on page 40
• N+1 Redundancy Configuration of AC Power Supplies on page 42
• N+N Redundancy Configuration of AC Power Supplies on page 43
AC Power Supply Description
The AC power supplies in EX8200 switches are hot-insertable and hot-removable
field-replaceable units (FRUs).
You can install up to six AC power supplies in an EX8200 switch. Power supplies are
installed at the bottom of the chassis in slots PSU 0 through PSU 5 (left to right). All
power supplies are accessible from the front of the chassis.
WARNING: The switch is pluggable type A equipment installed in a restricted-access
location. It has a separate protective earthing terminal provided on the chassis in addition
to the grounding pin of the power supply cord. This separate protective earthing terminal
must be permanently connected to earth ground.
NOTE: All base configuration EX8200 switches are shipped with two power supplies.
Cover panels are installed over the remaining four power supply slots. Additional power
supplies can be added to base configuration switches as necessary.
For details about different switch configurations, see “EX8208 Switch Configurations”
on page 6 or EX8216 Switch Configurations.
Each AC power supply weighs approximately 7 lb (3.2 kg) and has an independent 16 A
rated AC inlet on its front. Each inlet requires a dedicated AC power feed. Each AC power
supply has an
Enable switch, a fan, and three LEDs on the faceplate that indicate the
status of the power supply. See Figure 25 on page 41.
Copyright © 2010, Juniper Networks, Inc. 40
Complete Hardware Guide for EX8208 Ethernet Switches