Power And Electrical Safety Information; General Electrical Safety Guidelines And Warnings For Ex Series Switches - Juniper EX3200 Series Complete Hardware Manual

CHAPTER 20

Power and Electrical Safety Information

General Electrical Safety Guidelines and Warnings for EX Series Switches

Copyright © 2010, Juniper Networks, Inc.
General Electrical Safety Guidelines and Warnings for EX Series Switches on page 235
Prevention of Electrostatic Discharge Damage on EX Series Switches on page 236
AC Power Electrical Safety Guidelines for EX Series Switches on page 238
AC Power Disconnection Warning for EX Series Switches on page 239
Multiple Power Supplies Disconnection Warning for EX Series Switches on page 240
Power Sources for Redundant Power Supplies Warning for EX4200 Switches on page 240
DC Power Electrical Safety Guidelines for EX Series Switches on page 240
DC Power Disconnection Warning for EX Series Switches on page 242
DC Power Grounding Requirements and Warning for EX Series Switches on page 243
DC Power Wiring Sequence Warning for EX Series Switches on page 244
DC Power Wiring Terminations Warning for EX Series Switches on page 246
TN Power Warning for EX Series Switches on page 247
In Case of Electrical Accident: Action to Take on an EX Series Switch on page 248
WARNING: Certain ports on the switch are designed for use as intrabuilding
(within-the-building) interfaces only (Type 2 or Type 4 ports as described in
, Issue 4) and require isolation from the exposed outside plant (OSP)
GR-1089-CORE
cabling. To comply with NEBS requirements and protect against lightning surges and
commercial power disturbances, the intrabuilding ports must not be metallically
connected to interfaces that connect to the OSP or its wiring. The intrabuilding ports
on the switch are suitable for connection to intrabuilding or unexposed wiring or cabling
only. The addition of primary protectors is not sufficient protection for connecting these
interfaces metallically to OSP wiring.
CAUTION: Before removing or installing components of a switch, attach an ESD strap
to an ESD point and place the other end of the strap around your bare wrist. Failure to
use an ESD strap could result in damage to the switch.
235