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WARNING: Before servicing the system, 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:
■ Type of equipment racks recommended for the system
■ Number of equipment racks required to hold your current system configuration
■ Future expansion
Make sure that your distribution rack meets basic mechanical and space requirements
and complies with conventional standards. In the United States, use the EIA-310-D
Cabinets, Racks, Panels, and Associated Equipment, September 1992 standard.
Mechanical Requirements
Follow these mechanical requirements for your rack:
■ 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.
46 ■ Equipment Rack Requirements
C2000 and C4000 1.0.x Hardware Guide