Juniper EX8208 Complete Hardware Manual page 198

Complete Hardware Guide for EX8208 Ethernet Switches
172
NOTE: EX8208 switches support 2000 W DC power supplies.
EX8216 switches support 3000 W DC power supplies.
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).
CAUTION: Mixing different types of power supplies in the same chassis is
not a supported configuration.
NOTE: A 2000 W DC power supply requires a dedicated 60 A circuit breaker
for each input DC feed.
A 3000 W DC power supply requires a dedicated 100 A circuit breaker for
each input DC feed.
NOTE: Each power supply input feed must be connected to a dedicated DC
power source outlet.
Before you begin connecting DC power to an EX8200 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 298).
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, you must connect EX8200
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
earth ground. For instructions on connecting an EX8200 switch to ground
using a separate grounding conductor, see "Connecting Earth Ground to
an EX Series Switch" on page 163.
Install the power supply in the chassis. See "Installing a DC Power Supply in an EX8200
Switch" on page 146.
Copyright © 2010, Juniper Networks, Inc.