NOTE: Each power supply input feed must be connected to a dedicated DC
power source outlet.
Before you begin connecting DC power to an EX9208 switch:
•
Ensure that you have taken the necessaryprecautions to prevent electrostatic discharge
(ESD) damage (see “Prevention of Electrostatic Discharge Damage” on page 351).
•
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 EX9208
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 EX9208 switch to ground
using a separate grounding conductor, see “Connecting Earth Ground to
an EX Series Switch” on page 173.
•
Install the power supply in the chassis. See “Installing a DC Power Supply in an EX9208
Switch” on page 218.
Ensure that you have the following parts and tools available to connect DC power to an
EX9208 switch:
•
ESD grounding strap
•
DC power source cables (not provided) with the cable lugs (provided) attached.
The provided cable lugs in an EX9208 switch are sized for 6 AWG (13.3 mm
2
) power
source cables. The DC power source cables that you provide must be 6 AWG (13.3
mm
2
), minimum 60°C wire. We recommend that you install heat-shrink tubing
insulation around the power cables and lugs.
•
3/8-in. (9.5-mm) nut driver or socket wrench
•
Phillips (+) screwdriver, number 1 and 2
•
Multimeter
WARNING: Ensure that the power cords do not block access to switch
components or drape where people can trip on them.
To connect DC power to an EX9208 switch:
Copyright © 2017, Juniper Networks, Inc.184
EX9208 Switch Hardware Guide
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