Ensure that you have the following parts and tools available to connect power to the
device:
•
Electrostatic discharge (ESD) grounding strap
•
Phillips (+) screwdriver, number 1
•
Slotted (–) screwdriver, 1/4 inch, with a torque range between 23 in-lb (2.6 Nm) and
25 in-lb (2.8 Nm)
CAUTION: You must use an appropriate torque-controlled tool to tighten
the screws on the terminal block. Applying excessive torque damages the
terminalblockand the wiring tray. The absolute maximum torquethatmay
be applied to this screw is 50 in-lb (5.6 Nm).
WARNING: Ensure that the power cords do not block access to device
components or drape where people can trip on them.
To connect AC power to three-phase wye wiring trays:
1. Attach the ESD grounding strap to your bare wrist, and connect the strap to the ESD
point on the chassis.
2. Ensure that the power cords are not connected to power outlets. Switch off the
customer site circuit breakers. Ensure that the voltage across the AC power source is
0 V and that there is no chance that the voltage might become active during
installation.
3. If the wiring tray is installed in the chassis, remove it. See “Removing a Wiring Tray
from a QFX3008-I Interconnect Device”on page326. The powercord must be attached
to the wiring tray as described in “Preparing Delta and Wye Three-Phase Power Cords”
on page 241.
4. Ensure that the power switch on the wiring tray faceplate is in the OFF (O) position.
5. Using a number 1 Phillips (+) screwdriver, loosen the four screws on the metal AC
wiring compartment on the side of the wiring tray (see Figure 71 on page 252).
6. Open the metal door of the wiring tray compartment.
251Copyright © 2012, Juniper Networks, Inc.
Chapter 19: Installing a QFX3008-I Interconnect Device
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