Intel SGI Altix 450 manual 007-4857-002

1: System Installation

For international sites, follow these steps to ensure that a single-phase power receptacle is properly wired:

1.Set the voltmeter to a high AC voltage range.

2.Check the voltage between socket 1 and socket 2 (see Figure 1-2). The meter should read between 200 and 240 VAC.

3.Check the voltage between socket 1 (line) and the ground socket. The meter should read between 200 and 240 VAC.

Note: The ground pin is slightly larger in diameter than the other two pins.

4.Check the voltage between socket 2 (neutral) and the ground socket. The meter should read approximately 0 VAC.

5.Check the voltage between the ground socket and an earth-ground location. The meter should read 0 VAC.

6.Change the voltmeter to a low-resistance setting.

7.Measure between the ground socket and an appropriate earth-ground location and ensure that resistance is less than 1 ohm.

8.Repeat steps 1 through 7 for any additional single-phase power receptacles.

Caution: If a voltage reading is incorrect, or if the resistance measured in step 7 is more than 1 ! ohm, contact a site-approved electrician. Do not proceed with the installation.

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