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EX2300-C and EX2300 Switches Hardware Guide
164
connecting earth ground, see
Switch" on page
NOTE:
Grounding is required for DC systems and recommended for AC
systems.
Ensure that you have taken the necessary precautions to prevent electrostatic discharge
(ESD) damage (see
"Prevention of Electrostatic Discharge Damage" on page
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
To connect DC power to the switch:
Ensure that the input circuit breaker is open so that the cable leads do not become
1.
active while you are connecting DC power.
NOTE:
The DC power supply in the switch has four terminals labeled
,
INPUT 1+
INPUT 1–
source cables labeled positive
covered by a clear plastic cover.
NOTE:
The
INPUT 1+
and
INPUT 1–
Wiring Sequence Warning" on page 261
Guidelines for Switches" on page
Grasp the plastic cover in the middle, gently bend it outward, and pull it out. Save the
2.
cover.
Remove the screws on the terminals by using the screwdriver. Save the screws.
3.
WARNING:
Ensure that the power cables do not block access to switch
components or drape where people can trip on them.
Connect the power supply to the power sources. Secure power source cables to the
4.
power supply by screwing the ring lugs attached to the cables to the appropriate
terminals by using the screw from the terminals (see
"Connecting Earth Ground to an EX Series
155.
,
, and
INPUT 2+
INPUT 2–
(+)
and negative
and
terminals are referred to as +RTN and
INPUT 2+
terminals are referred to as –48 V in
INPUT 2–
256.
253).
for connecting DC power
(–)
. The terminals are
"DC Power
and
"DC Power Electrical Safety
Figure 60 on page
165).
Copyright © 2017, Juniper Networks, Inc.
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