39.
Connect
the
power
distribution
system
as
described
in
“Connecting
the
power
distribution
system.”
40.
After
the
rack
is
bolted
down
and
you
are
going
to
attach
a
front
electrical
outlet,
go
to
“Attaching
the
front
or
back
ac
electrical
outlet”
on
page
28.
41.
If
you
are
not
going
to
attach
a
front
electrical
outlet
and
you
are
installing
rack
doors,
go
to
“Attaching
the
rack
doors”
on
page
19.
Connecting
the
power
distribution
system
You
might
need
to
connect
a
power
distribution
system.
Use
the
procedure
in
this
section
to
perform
this
task.
To
connect
a
Power
Distribution
Unit,
see
“Power
distribution
unit
plus
(PDU+).”
Power
distribution
unit
plus
(PDU+)
The
power
distribution
unit
plus
(PDU+)
can
be
installed
in
the
14T/00
and
14T/42
racks,
and
allows
you
to
monitor
the
individual
power
loads
of
the
devices
that
are
plugged
into
it.
Checking
the
ac
outlets
You
might
need
to
check
the
ac
outlets.
Use
the
procedure
in
this
section
to
perform
this
task.
Before
you
begin,
ensure
that
you
have
a
multimeter
to
check
voltages
and
an
appropriately
approved
ground-impedance
tester
to
test
the
grounding
resistances.
Note:
Use
only
an
appropriately
approved
ground-impedance
tester
to
test
the
grounding
resistances.
Do
not
use
a
multimeter
to
measure
grounding
resistance.
Before
plugging
the
rack
into
the
ac
power
source,
complete
the
following
checks
on
the
ac
power
source.
1.
Turn
off
the
branch
circuit
breaker
for
the
ac
power
outlet
that
the
rack
will
plug
into.
To
the
circuit
breaker
switch,
attach
tag
S229-0237,
which
reads
″
Do
Not
Operate.
″
Note:
All
measurements
are
made
with
the
receptacle
faceplate
in
the
usual
installed
position.
2.
Some
receptacles
are
enclosed
in
metal
housings.
For
this
type
of
receptacle,
do
the
following:
a.
Using
a
multimeter,
check
for
less
than
1
volt
from
the
receptacle
case
to
any
grounded
metal
structure
in
the
building,
such
as
a
raised-floor
metal
structure,
water
pipe,
building
steel,
or
similar
structure.
b.
Using
a
multimeter,
check
for
less
than
1
volt
from
the
receptacle
ground
pin
to
a
grounded
point
in
the
building.
Note:
If
the
receptacle
case
or
faceplate
is
painted,
be
sure
the
probe
tip
penetrates
the
paint
and
makes
good
electrical
contact
with
the
metal.
c.
Using
a
multimeter,
check
the
resistance
from
the
receptacle
ground
pin
to
the
receptacle
case.
Check
resistance
from
the
ground
pin
to
the
building
ground.
The
readings
should
be
less
than
1.0
ohm,
which
indicates
the
presence
of
a
continuous
grounding
conductor.
3.
If
any
of
the
checks
made
in
step
2
are
not
correct,
ask
the
customer
to
remove
the
power
from
the
branch
circuit
and
make
the
wiring
corrections.
Recheck
the
receptacle
after
the
wiring
is
corrected.
4.
Using
a
ground-impedance
tester,
check
for
infinite
resistance
between
the
ground
pin
of
the
receptacle
and
each
of
the
phase
pins.
This
is
a
check
for
a
wiring
short
to
ground
or
a
wiring
reversal.
5.
Using
a
ground-impedance
tester,
check
for
infinite
resistance
between
the
phase
pins.
This
is
a
check
for
a
wiring
short.
6.
Turn
on
the
branch
circuit
breaker.
7.
Using
a
multimeter,
measure
for
the
appropriate
voltages
between
phases.
If
no
voltage
is
present
on
the
receptacle
case
or
grounded
pin,
the
receptacle
is
safe
to
touch.
Chapter
2.
Installing
your
system
in
a
rack
27
Summary of Contents for PL160R
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