HP Netserver L Server series - Manual (Page 15)

Chapter 2 Controls, Ports, and Indicators
7
Serial B Port
Serial A Port
Parallel Port
Mouse Port
Keyboard Port
Monitor Port
Power
Connector
Power
Supplies
Remote
Management Port
Figure 2-2. Rear Panel and Ports
Connecting the NetServer to AC Power
When you connect the NetServer to an AC power source, the server temporarily
draws additional current. This occurs even when the system is in standby mode.
This "inrush current" is much greater than the server's normal operating needs.
Generally, your external AC power source can handle the inrush current.
If you install several NetServers on one circuit, however, precautions are
necessary. If there is a power failure and power is then restored, all the servers
immediately begin to draw inrush current at the same time. If the circuit breakers
on the incoming power line have insufficient capacity, they may trip and thus
prevent the servers from powering up.
When preparing your site for installation, allow for the additional inrush current.
Follow these circuit breaker recommendations before installing the server at your
site:
•
In North American, use a 20-amp-minimum circuit with one NEMA AB1
class 14B breaker for each 16-amp Power Distribution Unit (PDU).