Figure 37: Securing Ring Lugs to the Terminals on the DC Power Supply
g021215
A-
DC power source cable
with lug attached
B-
B+
A+
DC power terminals:
•
To connect the power supply to a power source:
a. Secure the ring lug of the positive (+) DC power source cable to the A+ or B+
terminal on the DC power supply.
b. Secure the ring lug of the negative (–) DC power source cable to the A– or B–
terminal on the DC power supply.
c. Tightenthe screwson the powersupply terminals until snug using the screwdriver.
Do not overtighten—apply between 8 in.-lb (0.9 Nm) and 9 in.-lb (1.02 Nm) of
torque to the screws.
•
To connect the power supply to two power sources:
a. Secure the ring lug of the positive (+) DC power source cable from the first DC
power source to the A+ terminal on the power supply.
b. Secure the ring lug of the negative (–) DC power source cable from the first DC
power source to the A– terminal on the power supply.
c. Secure the ring lug of the positive (+) DC power source cable from the second
DC power source to the B+ terminal on the power supply.
d. Secure the ring lug of the negative (–) DC power source cable from the second
DC power source to the B– terminal on the power supply.
e. Tighten the screws on the power supply terminals on both the power supplies
until snug using the screwdriver. Do not overtighten—apply between 8 in.-lb
(0.9 Nm) and 9 in.-lb (1.02 Nm) of torque to the screws.
5. Hook the plastic cover on one side of the terminal block and gently flex it inwards to
hook it on the other side also.
6. Close the input circuit breaker.
Related
Documentation
Connecting and Configuring an EX Series Switch (CLI Procedure) on page 110•
Copyright © 2011, Juniper Networks, Inc.94
Complete Hardware Guide for EX3300 Ethernet Switches
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