Maintaining Safety With Electricity - Cisco Catalyst 9200 Series Hardware Installation Manual

Maintaining Safety with Electricity

Note
Note
Note
Maintaining Safety with Electricity
When working on electrical equipment, follow these guidelines:
• Do not work alone if potentially hazardous conditions exist anywhere in your work space.
• Never assume that power is disconnected from a circuit; always check the circuit before working on it.
• Look carefully for possible hazards in your work area, such as damp floors, ungrounded power extension
• If an electrical accident occurs, proceed as follows:
• Use the product within its marked electrical ratings and product usage instructions.
• Install the product in compliance with local and national electrical codes.
• If any of the following conditions occur, contact the Cisco Technical Assistance Center:
Cisco Catalyst 9200 Series Switches Hardware Installation Guide
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In all situations, grounding practices must comply with Section 250 of the National Electric Code (NEC)
requirements or local laws and regulations. A 6 AWG grounding wire is preferred from the chassis to
the rack ground or directly to the common bonding network (CBN). The equipment rack should also be
connected to the CBN with a 6 AWG grounding wire.
Grounding lugs must be installed on the location marked on the chassis only.
Always ensure that all of the modules are completely installed and that the captive installation screws
are fully tightened. In addition, ensure that all the I/O cables and power cords are properly seated. These
practices are normal installation practices and must be followed in all installations.
cables, frayed or damaged power cords, and missing safety grounds.
• Use extreme caution; do not become a victim yourself.
• Disconnect power from the system.
• Seek medical attention, if necessary.
• The power cable or plug is damaged.
• An object has fallen into the product.
• The product has been exposed to water or other liquids.
• The product has been dropped or shows signs of damage.
• The product does not operate correctly when you follow the operating instructions.
Preparing for Installation