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Cisco Network Convergence System 6000 Series Routers Site Planning Guide
OL-29236-02
Chapter 2 Power and Cooling
Bonding and Grounding Guidelines
Note A qualified electrician should review the information in these sections to ensure that the installation site
meets these requirements. For larger system configurations, consult a facilities electrical expert to
understand the load that the routing system may put on the facility power plant.
• Installation of the routing system must follow national and local electrical codes:
–
In the United States: United States National Fire Protection Association (NFPA) 70 and United
States National Electrical Code (NEC).
–
In Canada: Canadian Electrical Code, part I, CSA C22.1.
–
In other countries: International Electrotechnical Commission (IEC) 60364, parts 1 through 7.
• Two separate and independent AC or DC power sources are needed to provide N+N redundancy for
system power. Each power source requires its own circuit breaker.
• Each power source must provide clean power to the site (free of spikes and noise). If necessary,
install a power conditioner.
• The site must provide short-circuit (over-current) protection for devices.
• Proper grounding is required at the site to ensure that equipment is not damaged by lightning and
power surges:
• AC-powered systems require chassis grounding. A grounding-type AC power outlet is required.
• DC-powered systems require chassis grounding only.
• When planning the power for the site, be sure to include the power requirements for any external
terminals and test equipment you will use with your system.
Note Be sure to review the safety warnings in Regulatory Compliance and Safety Information for the Cisco
Network Convergence System 6000 Series Routers before attempting to install the routing system.
Bonding and Grounding Guidelines
The chassis has two safety earth ground connections. The chassis allows you to connect the central office
ground system or interior equipment grounding system to either of the two grounding points on the rear
side of the chassis. Threaded ground inserts are located on a rear panel near the top of the chassis (above
the power trays) and near the bottom of the chassis (Figure 2-1). The grounding points are also referred
to as Network Equipment Building System (NEBS) bonding and grounding points.
Note These bonding and grounding receptacles satisfy the Telcordia NEBS requirements for bonding and
grounding connections.
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