Service and Maintain

Utilities 17
Power
IMPORTANT: To provide power to the HP POD 240a, external transformers and switchboards
may be required. This equipment must be designed and installed to adhere with local, state, and
national codes, and installed by contractors with licensing required by the local jurisdiction;
city, township, and state.
For all site preparation drawings, see the HP Site Preparation Drawing Package (on page 6) included on the
documentation CD.
Power requirements
The HP POD 240a can be installed as a single source 1N load by providing all required feeders from one
common power sources and from common switchboards and transformers, if required. A fully redundant 2N
installation can be achieved by feeding the parallel power paths from independent power sources,
switchboards and transformers if required.
IMPORTANT: All 3-phase WYE feeders for the HP POD 240a require that the neutrals and the
equipment grounding conductors remain isolated. Bonding of the two conductors is allowed at
the power source only.
Power feeder requirements:
Feature Specification
Enclosure rating
NEMA 3R
Mechanical power for
cooling system
components
4 x 300A feeders at 480VΔ, 3-phase, 3-wire, with
equipment ground conductor
2 x 3" conduit fittings per feeder provided
Critical power for IT
equipment
4 x 1000A feeders at 415Y/240V, 3-phase, 4-wire,
with equipment ground conductors
4 x 4" conduit fittings per feeder provided
Total critical power
required for HP POD
240a full capacity
 2N Redundant—1.2 MVA
 Non-redundant—2.4 MVA
External power source
When determining the final location of the power connections, consider the following:
 Distance between the facility utilities and the location of the transformer and switchboard
 Distance between the transformer and switchboard and the HP POD 240a
 Distance between the UPS/Generator locations and the HP POD 240a switchboard
 Requirements for routing electrical feeders (underground or overhead)
The facility power connection must be installed in compliance with local electrical codes and regulations. HP
reference electrical installation design is based on a maximum distance of 15.2 m (50 ft) or line of sight
between the switchboard and the HP POD 240a.