Cable Connections
Wire Selection and Terminal Lugs for Connection of DC Power
Chapter 5
68
Wire Selection and Terminal Lugs for Connection of DC Power
WARNING Always check that the power cable is not connected to a power source before
attempting to connect the power cable to server power supply terminals. Failure to
observe this warning could result in personal injury or damage to equipment.
WARNING Failure to use the appropriate wire and terminal lugs when connecting DC power to
the server could result in personal injury or damage to equipment.
A DC power terminal block is provided at the rear of each DC power supply. All four terminals (2+ and 2-)
should be used. HP recommends a minimum #12 AWG or larger copper conductor be used for connecting DC
power. The wire style and insulation type must be appropriately rated for the application.
Aluminum conductors should be avoided. Aluminum has a coefficient of expansion that differs significantly
from that of other metals commonly used in power hardware. Because of this difference, use of aluminum
conductors can cause connector hardware to loosen, overheat, and fail.
The terminal lugs used to connect DC power must be rated to handle the expected load of 15A/PSU. The width
of the lug can be no larger than 0.3 inches (0.762 cm).
