Power Supply Considerations - Avaya 8300 Installation Manual

AC power supply fundamentals
Figure 2: 8302AC power supply

Power supply considerations

• Avaya recommends you install each power supply on its own dedicated branch circuit.
When you plug the power cord for each power supply into a separate AC circuit, the
redundant power supply provides protection against the disconnection, failure of an
individual branch circuit, or power supply failure.
• If you install a redundant power supply, power available for PoE is determined on an N
+1 redundancy. If there are one or two power supplies in the chassis, PoE power
equivalent to one power supply is allocated. If there are three power supplies in the
chassis, PoE power equivalent to two power supplies is allocated.
Important:
Avaya does not support installing a combination of AC-input and DC-input power supplies
in the same chassis.
24 Installation — AC Power Supply May 2011