Table 42 Input power requirements - three-phase, North American, International, Australian
Specification North American 4-wire
connection
(3 L & 1 G)
a
International 5-wire
connection
(3 L & 1 N & 1 G)
a
Input voltage
b
200–240 VAC ± 10% L- L
nom
220–240 VAC ± 10% L- N
nom
Frequency 50–60 Hz 50–60 Hz
Circuit breakers 50 A 32 A
Power zones Two Two
Minimum power requirements
at customer site
l
Two 50 A, three-phase
drops per bay.
l
PDU A and PDU B require
one separate three-phase
Delta 50 A drops for
each.
Two 32 A, three-phase drops
per bay.
a.
L = line or phase, N = neutral, G = ground
b.
An imbalance of AC input currents may exist on the three-phase power source feeding the
array, depending on the configuration. The customer's electrician must be alerted to this
possible condition to balance the phase-by-phase loading conditions within the customer's
data center.
Best Practices for AC Power Connections
AC power specifications 131
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