Safety with Electricity
Before working on a chassis or with power supplies, unplug the power cord on AC units. Disconnect
the power at the circuit breaker on DC units.
Statement 12
Warning
Before working on equipment that is connected to power lines, remove jewelry (including rings, necklaces,
and watches). Metal objects heat up when connected to power and ground and can cause serious burns
or weld the metal object to the terminals.
Statement 43
Warning
Avoid using or servicing any equipment that has outdoor connections during an electrical storm. There
may be a risk of electric shock from lightning.
Statement 1088
Warning
This equipment must be grounded. Never defeat the ground conductor or operate the equipment in the
absence of a suitably installed ground conductor. Contact the appropriate electrical inspection authority
or an electrician if you are uncertain that suitable grounding is available.
Statement 1024
Warning
This unit may have more than one power supply connection. All connections must be removed to
de-energize the unit.
Statement 1028
Warning
When installing or replacing the unit, ensure the ground connection first and disconnected last.
Statement
1046
Warning
This equipment is intended to be grounded to comply with emission and immunity requirements. Ensure
that the switch functional ground lug is connected to earth ground during normal use.
Statement 1064
Warning
Power Connection Guidelines
Check the power at your site to ensure you are receiving clean power (free of spikes and noise).
Ensure to observe the following safety guidelines while connecting the device power supplies.
Hardware Installation Guide for Cisco NCS 1004
7
Safety Guidelines
Safety with Electricity
