HP StorageWorks Disk Array XP1024: Site Preparation Guide (A7906-96013, July 2005)

Preparing for installation 57
Branch circuit requirements
To protect your disk array, your building must be wired correctly. Each
supply (“hot”) conductor must be protected by a short-circuit protective
device and by an overcurrent protective device. The following tables list
the current specifications for the overcurrent protective devices required for
three-phase operation:
• 30-Amp, 50 or 60 Hz, three-phase DKC (page 40)
• 60-Amp, 50 or 60 Hz, three-phase R1 DKU (page 43)
All protective devices must comply with national standards of the country
where the units are to be installed. If a protective device interrupts any
supply conductor, it must also interrupt all other supply conductors.
Overcurrent protection is not required for the neutral conductor of this unit.
Only 50 Hz, three-phase configurations have a neutral conductor.