Extreme Networks 12800 Series manual Rack Specifications and Recommendations

Site Preparation

Rack Specifications and Recommendations

Racks should conform to conventional standards. In the United States, use EIA Standard RS-310C: Racks, Panels, and Associated Equipment. In countries other than the United States, use IEC Standard

297.In addition, verify that your rack meets the basic mechanical, space, and earthquake requirements that are described in this section.

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 600 pounds (272 kilograms).

Protective Grounding for the Rack

Use a rack grounding kit and a ground conductor that is carried back to earth or to another suitable building ground.

BlackDiamond 12800 series switches are designed with mounting ears that provide metal-to-metal contact for grounding. Extreme Networks switches also have grounding terminals on the back of the chassis.

If you do not use equipment racks, you can attach wiring terminals directly to the mounting brackets for appropriate grounding.

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.

●Use the appropriate chassis grounding wire for your system, which is dependent upon the available input current to the power supply.

■For AC systems using a 20A breaker per PSU (SSI AC), the chassis ground can be as small as 14 AWG. The power cable ground should be the same size as the primary.

■For DC systems using a 40A breaker per PSU (SSI DC), the chassis ground can be as small as 10 AWG. The power cable ground should be the same size as the primary.

NOTE

For complete details on power supplies and power supply cords, refer to the following: Chapter 4, “Extreme Networks Power Supply Units for BlackDiamond Switches,” and “Selecting Power Supply Cords” on page 136 in Appendix A, “Safety Information.” Drill and tap wire terminals to equipment racks.

●Position the earth ground as close to the equipment rack as possible to maintain the shortest wiring distance possible.

46 BlackDiamond 12800 Series Switches Hardware Installation Guide