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

64 HP StorageWorks Disk Array XP1024: Site Preparation Guide
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
single-phase operation:
• 40-Amp, 50 or 60 Hz, single-phase DKC (page 38)
• 30-Amp, 50 or 60 Hz, single-phase DKC (page 39)
• 50-Amp, 50 or 60 Hz, single-phase DKU (page 41)
• 30-Amp, 50 or 60 Hz, single-phase DKU (page 42)
The protective device must comply with national standards of the country
where the units is to be installed (USA). If a protective device interrupts a
supply conductor, it must also interrupt all other supply conductors.
Note In many cases, local codes do not allow a branch circuit fitted with a
50-amp receptacle or connector to be protected by an
overcurrent-protection device with a rating lower than 50 amps. You can
order your HP Disk Array XP1024 with the 30-amp power option to
comply with these local codes. Your electrician knows the appropriate code
requirements for your location/site.