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Related Topics Prevention of Electrostatic Discharge Damage on EX Series Switches on page 292•
• Clearance Requirementsfor Airflow and Hardware MaintenanceforEX2200 Switches
• Clearance Requirements for Airflow and Hardware Maintenance for EX3200 and
EX4200 Switches
• ClearanceRequirementsforAirflowand HardwareMaintenanceforEX4500Switches
• ClearanceRequirementsforAirflowandHardwareMaintenanceforanEX8208Switch
on page 101
• ClearanceRequirements forAirflow and Hardware Maintenanceforan EX8216 Switch
• Environmental Requirements and Specifications for EX Series Switches on page 95
Site Electrical Wiring Guidelines for EX Series Switches
Table37onpage94describesthefactorsyoumustconsiderwhileplanningtheelectrical
wiring at your site.
WARNING: It is particularly important to providea properly grounded and shielded
environment and to use electrical surge-suppression devices.
Table 37: Site Electrical Wiring Guidelines
GuidelinesSiteWiring Factor
Ifyour siteexperiencesanyof the followingproblems,consult
expertsin electrical surge suppressionand shielding:
•
Improperlyinstalledwirescauseradiofrequencyinterference
(RFI).
•
Damage from lightning strikes occurswhen wiresexceed
recommended distances or passbetweenbuildings.
•
Electromagneticpulses(EMPs) causedby lightning
damages unshieldedconductors and electronic devices.
Signaling limitations
Toreduceoreliminateradiofrequencyinterference(RFI)from
yoursite wiring, do the following:
•
Usetwisted-paircablewithagooddistributionofgrounding
conductors.
•
If youmust exceedthe recommendeddistances,use a
high-qualitytwisted-paircablewith one ground conductor
foreachdatasignal when applicable.
Radiofrequencyinterference
Copyright ©2010,Juniper Networks,Inc.94
CompleteHardwareGuide forEX8208 EthernetSwitches