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HP StorageWorks XP12000 Disk Array Site Preparation Guide
Three-phase cabling for the USA (60 Hz)
Each three-phase DKU has two main disconnect devices (two main
breakers for dual power lines) so that AC power to the unit can be supplied
from separate power distribution panels with two power-supply cords.
Caution
An HP representative should be present whenever the disk array is being
connected to a new power source for the first time.
Connecting the external power-supply cords
The XP12000 disk array is factory-configured for 30-amp, three-phase
power.
When the disk array uses 30-amp, three-phase input power, the DKC and
DKUs have two power cords each.
Figure 12. 30-amp, three-phase power cords
If one power source malfunctions, the other power source assumes the total
load, providing uninterrupted operation. HP recommends that each power