Chapter 19
Power and Electrical Safety Information
■ General Electrical Safety Guidelines and Warnings for EX Series
Switches on page 173
■ Prevention of Electrostatic Discharge Damage on EX Series Switches on page 174
■ AC Power Electrical Safety Guidelines for EX Series Switches on page 176
■ AC Power Disconnection Warning for EX Series Switches on page 177
■ Multiple Power Supplies Disconnection Warning for EX Series
Switches on page 178
■ TN Power Warning for EX Series Switches on page 178
■ In Case of Electrical Accident: Action to Take on an EX Series Switch on page 179
General Electrical Safety Guidelines and Warnings for EX Series Switches
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
GR-1089-CORE, Issue 4) and require isolation from the exposed outside plant (OSP)
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.
■ Install the EX Series switch in compliance with the following local, national, and
international electrical codes:
■ United States—National Fire Protection Association (NFPA 70), United States
National Electrical Code.
■ Other countries—International Electromechanical Commission (IEC) 60364,
Part 1 through Part 7.
General Electrical Safety Guidelines and Warnings for EX Series Switches ■ 173
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