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 Express5800/320Fc Site Planning Manual

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

Component
Express5800/320Fc systems
TOTAL NUMBER OF A-SIDE POWER OUTLETS

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

Component
Express5800/320Fc systems
TOTAL NUMBER OF B-SIDE POWER OUTLETS

Connecting a System Directly to Two Separate Power Sources

If you do not connect your Express5800/320Fc 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 Express5800/320Fc 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 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