Connecting A System Directly To Two Separate Power Sources; Table 4-7. Worksheet: A-Side External Power Outlet Requirements - No Pdus; Table 4-8. Worksheet: B-Side External Power Outlet Requirements - No Pdus - NEC Express5800/320Ma Planning Manual

Table 4-7. Worksheet: A-Side External Power Outlet Requirements - No PDUs

Component
Express5800/320Ma 3.2 GHz, 3.6
GHz, or Dual-Core systems+
TOTAL NUMBER OF A-SIDE POWER OUTLETS

Table 4-8. Worksheet: B-Side External Power Outlet Requirements - No PDUs

Component
Express5800/320Ma 3.2 GHz, 3.6
GHz, or Dual-Core systems
TOTAL NUMBER OF B-SIDE POWER OUTLETS

Connecting a System Directly to Two Separate Power Sources

If you do not connect your Express5800/320Ma 3.2 GHz or 3.6 GHz system or PDUs
to a UPS, provide two AC power sources that are as electrically independent of each
other as the installation site allows. At a minimum, the two power sources must be
powered by separate circuit breakers (maximum of 20A) to AC power and, if possible,
be independent of each other beyond that level. The more electrical separation
between the two power sources, the less likely they will both fail at the same time. Due
to redundancy in Express5800/320Ma 3.2 GHz and 3.6 GHz systems, power to either
side of the system keeps the system in operation, although the system is no longer
fault-tolerant with regard to power.
Figure 4-1 shows how to connect a rack-mounted Express5800/320Ma 3.2 GHz,
3.6GHz, or Dual-Core system directly to two separate AC power sources, and
Figure 4-2 shows how to connect a pedestal system directly to two separate power
sources.
Connecting a System Directly to Two Separate Power Sources
Quantity
Quantity
Outlets Subtotal
x 1
Outlets Subtotal
x 1
Electrical (AC) Power Planning 4-5