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4-2
Cisco Nexus 7000 Series Hardware Installation and Reference Guide
OL-18634-01
Chapter 4 Installing Power Supply Units
Connecting the Power Supply Units to AC Power
Note If you do not have enough power supply units to fill all of the power supply bays, cover each empty
power supply bay with a blank plate (Cisco part number 800-28658-01) and secure it by screwing in its
captive screws to 69 N m (8 in-lbs).
Connecting the Power Supply Units to AC Power
You must connect two or more installed 6-kW or 7.5-kW power supply units to an AC power source to
power your Cisco Nexus 7000 Series system. To connect a 6-kW power supply unit, you must connect
one or two power cables to the power supply and to one or two 20A AC power sources that provide 110
V or 220 V of power. To connect a 7.5-kW power supply unit, you must connect one or two power cables,
which are permanently attached to the power supply unit, to 30A AC power sources that provide 220 V
of power.
Note The power cables required for each 6-kW power supply unit are shipped in the system accessory kit.
Check the power cables with the list of available power cables in the Cisco Nexus 7010 System Accessory
Kit Contents or Cisco Nexus 7018 System Accessory Kit Contents to be sure you have the correct cables.
If you do not have the correct cables, contact Cisco Technical Support.
Warning
Read the installation instructions before connecting the system to the power source.
Statement 1004
This section includes the following topics:
• Prerequisites for Connecting Power Supply Units to AC Power, page 4-2
• Required Tools and Equipment, page 4-2
• Connecting 6-kW Power Supply Units, page 4-3
Prerequisites for Connecting Power Supply Units to AC Power
Before you connect the power supply units to AC power sources, you must install the power supply units
in the chassis and you must have the appropriate AC power source receptacles within reach of the power
supply cables that are attached to the installed power supply units. For 6-kW power supply units, you
must have one or two 20 A circuits that provide 110 V or 220 V of power. For 7.5-kW power supply
units, you must have one or two 30 A circuits that provide 220 V of power. If you are using the combined
power mode or power supply redundancy mode, you only need one circuit. If you are using the input
source redundancy mode, you must have at least two circuits.
Required Tools and Equipment
You need a Phillips screwdriver to secure power cables to the power supply units.
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