Use a rack grounding kit and a ground conductor that is carried back to earth or to another suitable building ground.
All Extreme Networks switches are designed with mounting brackets that provide solid metal-to-metal connection to the rack. 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:
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Ground equipment racks to the earth.
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CAD weld appropriate wire terminals to building I-beams or earth ground rods.
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Use #4 copper wire.
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Drill and tap wire terminals to equipment racks.
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Position the earth ground as close to the equipment rack as possible to maintain the shortest wiring distance possible.
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Properly test the quality of the earth ground.
