Branch Circuit Requirements - HP StorageWorks XP48 - Disk Array Manual

Branch Circuit Requirements

Preparing for Installation
High leakage current may occur between the power supply and the unit. To
avoid an electrical shock, be sure to perform the protective earth connection
before the supply connections are made.
To protect your disk array, your building must be wired correctly. Each line
(U/L1, V/L2 line) should be protected by a short circuit protective device
and by an overcurrent protective device rated 20 amp on building
installation.
The protective device on building installation should comply with National
Standards of the country where the units shall be installed, and if a
protective device interrupts a conductor, it shall also interrupt all other
supply conductors.
43