Communication Server Large System Installation and Commissioning

Page 122 of 456 Installing DC power
NN43021-310 Standard 02.01 December 2007
With the NT4N49AA PDU, the safety ground/protective earth wires and all
wiring to the terminal block in the PDU must be neatly routed within the
cable-tie saddles and under the cable restraint bar at the base of the pedestal
(see Figure 44 on page 122). This ensures that there is room to install the
PDU cover, safety cover, and rear grill.
Conduit is not required with the NT4N49AA PDU. However, 32 mm
(1 1/4 in.) or 20 mm (3/4 in.) conduit can be used if local codes or individual
installations require it. Conduit can be routed down through the column from
overhead racks or up through the floor. Conduit clamps and the hardware to
fasten the conduit are provided in the pedestal. If the NT7D0902 Rear Mount
Conduit Kit is used, conduit can enter from the rear of the column (above the
floor).
Figure 44
Cable routing in the rear of the pedestal – NT4N49AA PDU
FLTR / PWR DIST
UNIT ASSY
LRTN
Cable restraint bar
BLO CB0 CB1 CB2 CB3
NT4N49AA
Cable-tie saddle Cable-tie saddle
553-8989
J6J5J3 J4
BAT
0/1
BAT
2/3
+
RTN
0/1
+
RTN
2/3