Step 3
Attach the alligator clip directly over the head of the system ground lug screw or to the system ground lug
barrel.
Figure 11: Attaching the ESD Wrist Strap to the System Ground Lug Screw
Power Requirements
When preparing your site for the switch installation, follow these requirements:
•
When installing two power supplies, connect each power supply to a separate input power source. If
you fail to do this, your system might be susceptible to total power failure due to a fault in the external
wiring or a tripped circuit breaker.
•
To prevent a loss of input power, be sure that the total maximum load on each source circuit is within
the current ratings of the wiring and breakers.
•
You might decide to use an uninterruptible power supply (UPS) to protect against power failures at your
site. Be aware when selecting a UPS that some UPS models that use ferroresonant technology can become
unstable when operating with the Catalyst 6880-X switch power supplies which use power factor
correction (PFC). This can cause the output voltage waveform to the switch to become distorted resulting
in an undervoltage situation in the system.
•
The AC-input power supply has a detachable power cord that allows you to connect each power supply
to the site power source.
•
You can connect the DC-input power supply to the power source with heavy-gauge wiring connected
to a terminal block. The wire gauge size is determined by local electrical codes and restrictions.
•
If you are using a 200/240 VAC power source in North America, the circuit must be protected by a
two-pole circuit breaker.
•
The source AC outlet must be within 6 feet (1.8 meters) of the system and should be easily accessible.
Catalyst 6880-X Switch Hardware Installation Guide
OL-30827-02 27
Preparing for Installation
Power Requirements
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