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Meeting Site Requirements
At a minimum, follow these guidelines to ground equipment racks to the earth ground:
●CAD weld appropriate wire terminals to building
●Use the appropriate chassis grounding wire for your system, which is dependant 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 15A breaker per PSU (Summit
■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 3, “Power Supply Units for BlackDiamond 8800 Series Switches,” and “Selecting Power Supply Cords” on page 158 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.
●Use a ground impedance tester or
NOTE
Because building codes vary worldwide, Extreme Networks strongly recommends that you consult an electrical contractor to ensure proper equipment grounding for your specific installation.
Space Requirements for the Rack
Provide enough space in front of and behind the switch so that you can service it easily. Allow a minimum of 48 inches (122 cm) in front of the rack and 24 inches (61 cm) behind the rack. When using a relay
WARNING!
The chassis does not have a switch for turning power to the unit on and off. For systems using an AC power supply, power to the chassis is disconnected by removing the wall plug from the electrical outlet. For systems using a DC SSI power supply, power to the chassis can be turned off by lifting the handle on the power supply or by de- energizing the circuit that feeds the power supply, which is usually accomplished by turning off a circuit breaker.
Securing the Rack
The rack should be attached to the wiring closet floor with
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