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Connecting power from the power plant to the PDU
Note 1: It is good installation practice to fully wire out a pedestal, even if
only one or two columns are being installed at first. This facilitates future
expansion to a four-module column. The number of wires depends on
whether the requirements are for two feeds per column (standard), four
feeds per column (enhanced reliability), or one feed per Common
Equipment (CE) module.
Note 2: If only two modules are used in the column, set the CB2 and CB3
circuit breakers to OFF.
Procedure 9
Connecting power from the power plant to the PDU (NT4N49AA)
1
Ensure that power to the power plant is removed from the service panel.
2
Remove the air intake grill from the rear of the column pedestal being
wired by removing the two screws securing the air intake grill to the
pedestal.
3
Use a Phillips screwdriver to remove the PDU safety cover.
4
Remove the top cover from the power plant.
a.
Remove the six screws from the top of the power plant.
b.
Release the captive screw on the front control panel.
c.
Lay the control panel down and remove the top cover.
5
Route the wires between the power plant and the pedestal of the column
being wired.
6
For installations that use a junction box:
a.
Insert the conduit from the junction box into one of the conduit access
holes in the pedestal.
b.
Route the wires within the cable-tie saddles and under the cable
restraint bar at the base of the pedestal.
Installing DC power
Large System Installation and Commissioning
Page 129 of 436
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