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WARNING: Do not work on the system or connect or disconnect cables during
lightning activity.
WARNING: Be sure circuit breakers for the power source are in the OFF position
before attaching power cables.
WARNING: Before servicing the router, turn off the power.
WARNING: Remove jewelry (including rings, necklaces, and watches) before working
on equipment that is connected to power lines. Metal objects heat up when connected
to power and ground and can cause serious burns or become welded to the terminals.
CAUTION: Evaluate the overall loading of the branch circuit before you install any
equipment into a rack.
Equipment Rack Requirements
When allocating equipment rack space, consider the following:
Make sure your distribution rack meets basic mechanical and space requirements
and complies with conventional standards. In the United States, use EIA-310-D
Cabinets, Racks, Panels, and Associated Equipment, September 1992.
Mechanical Requirements
Follow these mechanical requirements for your rack:
Type of equipment racks recommended for the router
Number of equipment racks required to hold your current router configuration
Future expansion
Select from the following rack options:
Two-post rack a freestanding enclosed cabinet with two mounting posts
in the front
Telco-type rack two adjacent mounting posts that you must secure to the
floor or an overhead structure
Four-post rack a freestanding open rack, either open or closed
The rack must have at least two mounting posts.
Appendix B: Installation Guidelines and Requirements
Equipment Rack Requirements
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