Juniper QFabric QFX3008-I, Manual, Page: 169 / 472

CAUTION: Power cords and cables must not block access to device
components or drape where people could trip on them.
Each three-phase AC wiring tray has a metal wiring compartment that contains the AC
terminal block and ground. There are two types of three-phase wiring trays:
delta
(three-wire) and wye (four-wire). The wye AC terminal block consists of four input
terminals labeled N , L1 , L2 , and L3 , from top to bottom in the common three-phase naming
convention.
You must provide cords appropriate for your geographical location. The AC power cord
wires insert into the AC terminal block on the wiring tray.
The power cords you provide must comply with the specifications listed in Table 51 on
page 143 .
NOTE: In North America, AC power cords must not exceed 4.5 m
(approximately 14.75 ft) in length, to comply with National Electrical Code
(NEC) Sections 400-8 (NFPA 75, 5-2.2) and 210-52, and Canadian Electrical
Code (CEC) Section 4-010(3).
Table 51: Three-Phase Delta AC Power Cord Specifications
Cord or Cable Type
Plug
Color
Plug Type
Electrical
Rating
The cord or cable must be HAR compliant, IEC 60245 (designation
60245 IEC 53) or IEC 60227 (designation 60227 IEC 53); or meet
one of the following standards (North America): SV, SVE, SVO,
SVOO, SVT, SVTO, SVTOO, SP-2, SPE-2, SPT-2, NISP-2, NISPE-2,
NISPT-2, SP-3, SPE-3, SPT-3, SJ, SJE, SJO, SJOO, SJT, SJTO,
SJTOO, S, SE, SO, SOO, ST, STO, STOO Red International
Electrotechnical
Commission (IEC) 60309 400 VAC, 32 A
Related
Documentation
AC Power Supply in a QFX3008-I Interconnect Device on page 52
•
•
Wiring Tray in a QFX3008-I Interconnect Device on page 54
•
AC Power Electrical Safety Guidelines on page 194
•
AC Power Disconnection Warning on page 196
•
General Electrical Safety Guidelines and Warnings on page 191
•
Connecting AC Power to a QFX3008-I Interconnect Device with Three-Phase Wye
Wiring Trays on page 250
Calculating Power Requirements for a QFX3008-I Interconnect Device
Use the information in this topic to calculate power consumption, system thermal output,
and number of power supplies required for different QFX3008-I Interconnect device
configurations.
143 Copyright © 2012, Juniper Networks, Inc.
Chapter 10: Planning QFX3008-I Power Requirements