15
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.
