Maintaining Safety With Electricity; Preventing Esd Damage - Cisco Catalyst 9500 Series Hardware Installation Manual

Maintaining Safety with Electricity

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:
• Use the correct external power source. Operate the product only from the type of power source indicated
• To help prevent electrical shock, plug all the power cables into properly grounded electrical outlets.
• Observe power strip ratings. Make sure that the total current rating of all products that are plugged into
• Do not modify power cables or plugs yourself. Consult with a licensed electrician or your power company

Preventing ESD Damage

ESD damage might occur when modules or other FRUs are improperly handled, resulting in intermittent or
complete failure of the modules or FRUs. Modules consist of printed circuit boards that are fixed in metal
carriers. EMI shielding and connectors are integral components of a carrier. Although the metal carrier helps
to protect the board from ESD, always use an ESD-grounding strap when handling modules. To prevent ESD
damage, follow these guidelines:
Cisco Catalyst 9500X Series Switches Hardware Installation Guide
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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.
on the electrical ratings label. If you are not sure of the type of power source required, consult a local
electrician.
These power cables are equipped with three-prong plugs to ensure proper grounding. Do not use adapter
plugs or remove the grounding prong from a power cable.
the power strip does not exceed 80 percent of the power strip rating.
for site modifications. Always follow your local and national wiring codes.
Preparing for Installation