NonStop NS2400 Series Planning Guide

Figure 19 Example of Bottom AC Power Feed With Three-Phase UPS
Each PDU is wired to distribute the load segments to its receptacles.
CAUTION: If you are installing NonStop NS2400 series system enclosures in a rack, balance
the current load among the available load segments. Using only one of the available load segments,
especially for larger systems, can cause unbalanced loading and might violate applicable electrical
codes. Connecting the two power plugs from an enclosure to the same load segment causes failure
of the hardware if that load segment fails.
PDU Strapping Configurations
PDUs are available in four static strapping configurations that are factory-installed in a modular
cabinet. The specific PDU strapping configuration for a particular site depends on the type and
66 System Installation Specifications for NonStop NS2400 Series Systems