Juniper EX8208 Hardware Manual page 175

WARNING:
from the DC circuit. To ensure that all power is off, locate the circuit breaker on the
panel board that services the DC circuit, switch the circuit breaker to the OFF position,
and tape the switch handle of the circuit breaker in the OFF position.
NOTE: EX8208 switches support 2000 W DC power supplies.
EX8216 switches support 3000 W DC power supplies.
CAUTION:
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:
Before you begin connecting DC power to an EX8200 switch:
Ensure that you have taken the necessary precautions to prevent ESD damage (see
Electrostatic Discharge Damage" on page
Ensure that you have connected the switch chassis to earth ground.
CAUTION:
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
Series Switch" on page
Install the power supply in the chassis. See
page 245.
Ensure that you have the following parts and tools available to connect DC power to an EX8200 switch:
Before performing DC power procedures, ensure that power is removed
Before you connect power to the switch, a licensed electrician must attach
Do not mix different types of power supplies in the same chassis.
381).
To meet safety and electromagnetic interference (EMI) requirements
164.
"Installing a DC Power Supply in an EX8200 Switch" on
"Prevention of
"Connect Earth Ground to an EX
175