2-6
Power Requirements
The most important installation considerations are for power requirements. The basic power 
requirements for the HP 3000 and HP 9000 Enterprise Servers are listed in Table 2-2. (Additional 
power specifications are contained in Appendix B of this manual.) Also, refer to Section 3 of the 
Computer Products Site Preparation Resource Guide. Your Hewlett-Packard Sales Representative and 
CE can assist you in determining peripheral power requirements.
NOTE
Some systems require single-phase power. Single-phase power may be 
obtained by making power connections in one of the following ways:
• Line-to-neutral: 200-240 Volts (One hot (phase) wire and a neutral).
• Line-to-line: 200-240 Volts. Connect across two phase (hot) wires.
i. 20 Amps for: HP 9000 Models K100, K200, K210, K220, K400, K410, & K420 and HP 3000
Models 929KS, 939KS, 959KS, 969KS/x00, and 969KS/x20
Table 2-2. Power Requirements.
Line Voltage 90-127 VAC or
200-240 VAC 
(Nominal)
Line Frequency 50-60 Hz ±5%
Voltage Waveform Harmonic
Distortion
<5%
Recommended Circuit
Breaker Rating
30 Amps 
i
(motor start rating)