26
Underfloor Cabling
b
Do not install or remove power cables while the equipment is powered on. Ensure that the power is switched
off prior to removing or installing a power cable to avoid bodily injuries.
When power and ground cables are installed underfloor, there is little space
left for routing external fibers. In this case, fiber management frames must be
used to route external fibers.
Ground cable
(yellow-green)
Cabling area
NOTE
CAUTION
Thread power and ground cables into the cabinet through cable holes at the
bottom of the cabinet. Route the ground cable by way of the cabling area,
thread it through the cable hole at the top of the cabinet, and connect it to the
ground bolt. In addition, route the power cables by way of the cabling area to
the top of the cabinet.
Put the cord end terminals of the BGND cable and blue -48 V power cable
on the RTN(+) and NEG(-) input terminals respectively, with the fluted sides
of the cord end terminals facing outward. Then tighten the screws.
M8 screw
Phillips screwdriver
Adjustable wrench
If copper fittings have been installed in the power input areas, put the cord
end terminal of each BGND cable on the RTN(+) input terminal on the PDU
with the fluted side facing outward. Then tighten the screws.
Put the two-hole OT terminal of each blue -48 V power cable on the NEG(-)
input terminal on the PDU with the protruding side facing outward.
5±0.5 N.M
M6
When copper fittings have been installed, the blue -48 V power cables
must use two-hole OT terminals instead of cord end terminals, while the
BGND cables must use cord end terminals.
CAUTION
A1/A2 (-) A3/A4 (-) B1/B2 (-) B3/B4 (-)
A1
(+)
A3
(+)
B1
(+)
B3
(+)
-48 V power cables (blue)
NEG(-)
BGND cables (black)
RTN(+)
-48 V power cables (blue)
NEG(-)
Four-in-one
copper fittings
installed
Two-in-one copper
fittings installed
A1-A4 (-)
B1-B4 (-)
A1
(+)
B1
(+)
-48 V power cables (blue)
NEG(-)
BGND cables (black)
RTN(+)
-48 V power cables (blue)
NEG(-)
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