WARNING: DC-powered switches are intended for installation only in a
restricted access location.
Before you begin connecting DC power to the switch, 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 cablewith an incorrectlyattached lugcan damagethe switch(forexample,
by causing a short circuit).
To meet safety and electromagnetic interference (EMI) requirements and
to ensure proper operation, you must connect the switch 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 103.
NOTE: Grounding is required for DC systems and recommended for AC
systems. An AC-powered 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.
Ensure that you have the following parts and tools available:
•
DC power source cables (14 AWG) with ring lug (Molex 0190700067 or equivalent)
(not provided) attached to them by a licensed electrician
•
Phillips (+) screwdriver, number 2
111Copyright © 2011, Juniper Networks, Inc.
Chapter 10: Connecting the Switch
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