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Power supply installation order, 1 power supply installation order, Figure 12 power supply installation order – Compaq ALPHA GS320 User Manual

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4.3.1.1 Power Supply Installation Order

Figure 10 Power Supply Installation Order

Loads must be properly distributed across the three phases to avoid nuisance tripping of circuit breakers. Therefore,
placement of the third, redundant power supply is important. Figure 12 provides a chart showing the recommended
placement.

Two power supplies are needed to power one system box, the H-switch, OCP, and blower. The third power supply
is redundant. When three power supplies are in a subrack, one may be hot swapped.