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Cabling and powering up the enclosure 64
Three-phase AC configuration
For a three-phase power configuration, the AC power cables are already attached to the enclosure. To cable
the enclosure using a three-phase AC configuration:
1. Connect the AC power cables to the AC power source.
2. Turn on the AC circuit breakers that power the power cables installed in the enclosure.
When the enclosure powers up for the first time, it might take up to 5 minutes before all blades are initialized
and recognized by the Onboard Administrator. The time it takes to complete initialization depends on the
number of blades configured in the enclosure. For example, a full enclosure of 16 blades might take 5
minutes to power up, while an enclosure with fewer blades might take less time. Server blades are powered
up incrementally, starting from device bay 1.
When first initialized, the Onboard Administrator programs the mezzanine cards on the blades during
discovery. After the mezzanine cards are programmed, powering up the enclosure takes only 1 to 2 minutes.
The enclosure and the Insight Display now have power. Configure the enclosure ("Running the Insight Display
installation steps" on page 65) using the Insight Display.