Mechanical Recommendations For The Rack; Ground The Rack; Provide Adequate Space For The Rack - Extreme Networks 7720 Installation Manual

Mechanical Recommendations for the Rack

Mechanical Recommendations for the Rack
Use equipment racks that meet the following mechanical recommendations:
•
Use an open style, 19-inch rack to facilitate easy maintenance and to provide proper
ventilation.
•
Use a rack made of steel or aluminum.
•
The rack should use the universal mounting rail hole pattern that is identified in IEC
Standard 297.
•
The rack should have designated earth grounding connections (typically on the
base).
•
The rack must meet earthquake safety requirements equal to that of the installed
chassis.
•
The mounting holes should be flush with the rails to accommodate the chassis.
•
The rack should support approximately 270 kg (600 lb).

Ground the Rack

The rack must be properly grounded.
Use a rack grounding kit and a ground conductor that is carried back to earth or to
another suitable building ground.
At a minimum, follow these guidelines to ground equipment racks to the earth ground:
•
CAD weld appropriate wire terminals to building I-beams or earth ground rods.
•
For a DC-powered switch, use a minimum 14 AWG stranded copper wire for
grounding.
AC-powered switches do not need separate chassis grounding.
•
Position the earth ground as close to the equipment rack as possible to maintain the
shortest wiring distance possible.
•
Use a ground impedance tester or micro-ohm meter to test the quality of earth
ground connection at the chassis. This will ensure good grounding between the
chassis, rack, and earth ground.
Note
Because building codes vary worldwide, consult an electrical contractor to
ensure proper equipment grounding for your specific installation.

Provide Adequate Space for the Rack

Provide enough space in front of and behind the switch so that you can service it easily.
42 Extreme 7720 Hardware Installation Guide
Site Preparation