Lightning and AC Power Fault Interference
If signal wires exceed recommended cabling distances, or if signal wires pass between buildings, you should
consider the effect that a lightning strike in your vicinity might have on the controller.
The electromagnetic pulse (EMP) generated by lightning or other high-energy phenomena can couple enough
energy into unshielded conductors to damage or destroy electronic equipment. If you have previously
experienced such problems, you should consult with RFI/EMI experts to ensure that you have adequate
electrical surge suppression and shielding of signal cables in your controller operating environment.
Rack-Mounting Guidelines
This section describes guidelines on rack-mounting.
Precautions for Rack-Mounting
The following rack-mounting guidelines are provided to ensure your safety:
• Do not move large racks by yourself. Due to the height and weight of a rack, a minimum of two people
are required to accomplish this task.
• Ensure that the rack is level and stable before extending a component from the rack.
• Ensure that proper airflow is provided to the components in the rack.
• Do not step or stand on any component or system when servicing other systems or components in a rack.
• When mounting the controller in a partially filled rack, load the rack from the bottom to the top with the
heaviest component at the bottom of the rack.
• If the rack is provided with stabilizing devices, install the stabilizers before mounting or servicing the
unit in the rack.
General Rack-Selection Guidelines
The Cisco Catalyst 9800-80 Wireless Controller can be mounted in most two-post or four-post, 19-in. equipment
racks that comply with the Electronics Industries Association (EIA) standard for equipment racks (EIA-310-D
19-in.). The rack must have at least two posts with mounting flanges to mount the chassis.
When mounting a chassis in any type of rack equipment, ensure that the inlet air to the chassis does not exceed
131°F (55°C).
Caution
The distance between the center lines of the mounting holes on the two mounting posts must be 18.31 in. ±
0.06 in. (46.50 cm ± 0.15 cm). The rack-mounting hardware included with the chassis is suitable for most
19-in. (48.3-cm) equipment racks.
Consider installing the Cisco Catalyst 9800-80 Wireless Controller in a rack with the following features:
• NEBS-compliant, 19-in. (48.3-cm) wide rack.
Cisco Catalyst 9800-80 Wireless Controller Hardware Installation Guide
30
Preparing Your Site for Installation
Rack-Mounting Guidelines
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