HP Performance Optimized Datacenter 20c User Guide - North America

Power, electrical, and controls 23
Power, electrical, and controls
Site electrical system
To ensure a complete and safe integration of the HP POD solution with your facility, HP requires that you
complete the following actions for the installed electrical system prior to the installation of the HP POD
solution:
• Short circuit analysis
• Arc flash study
• Circuit breaker coordination study
These actions must be performed for all associated parts of the electrical power train. The majority of the
details and factors required to complete these studies are associated with the existing installed facility
infrastructure.
CAUTION: Failure to complete these studies can cause serious issues with the electrical
integration of the POD into your electrical system.
Power safety
WARNING: To avoid the risk of personal injury or loss of life, all personnel must comply with PPE
requirements when opening or working inside areas of the HP POD 20c that are marked as
hazardous voltage, per NFPA 70E in accordance with NEC (NA) and IEC (EMEA and APJ).
Grounding
WARNING: To avoid the risk of personal injury or electric shock, the HP POD 20c must be
properly earthed (grounded) in accordance with NFPA 70 2008/2011 and any local or
regional codes applicable to the installation site.
The HP POD 20c must be properly earthed to ensure a common return path for electric current, limit the
build-up of static electricity, and absorb an unlimited amount of current without changing its potential. To
properly ground the HP POD 20c to the earth, you must connect the POD to building steel, a ground rod, or
a properly installed ground well that is connected to a building’s grounding system. The grounding electrode
conductor connection point is located on the cold aisle side adjacent to the power cabinet.