Installation
61287722G1-5B
15
CAUTION
!
•
This
equipment
must
be
connected
to
a
known,
reliable
earth
ground
at
all
times
during
installation
and
service.
Refer
to
the
National
Electrical
Code
(NEC)
and
state/local
codes
for
details
on
grounding
requirements.
A
minimum
12
AWG
copper
ground
conductor
shall
be
used
to
connect
the
equipment
to
earth
ground.
•
This
equipment
must
be
serviced
by
authorized
service
personnel
only.
All
repair
procedures
are
detailed
to
allow
sub
‐
assembly
level
repairs
ONLY.
Authorized
service
personnel
should
not
attempt
component
level
repairs
or
circuit
modifications
to
the
printed
circuit
board.
Improper
repairs
can
create
a
safety
hazard.
Determining SBU ONT Enclosure Location
General
SBU
ONT
mounting
requirements
for
both
indoor
and
outdoor
are
as
follows:
• Maintain
proper
airflow
in
and
around
the
unit
at
its
final
mounted
location.
Do
not
install
siding
and
other
building
material
around
the
outside
of
the
enclosure
to
prevent
excessive
heat
buildup
and
ultimate
product
failure.
• Mount
the
unit
within
proximity
of
the
AC
electrical
power
meter
where
the
Multi
‐
Ground
Neutral
(MGN)
is
easily
accessible.
• Mount
the
unit
away
from
down
spouts,
permanent
water
sprinklers,
or
other
water
sources.
• Consider
proper
clearances
for
opening
of
the
swinging
SBU
ONT
covers.
The
height
of
the
mounting
can
vary,
however,
it
is
recommended
that
the
enclosure
be
installed
at
a
vertical
distance
of
approximately
four
feet
(1.2
meters)
from
grade.
This
height
lends
to
ease
of
installation/repair.
Naturally,
this
mounting
is
dependent
on
the
height
of
the
customer
provided
inside
wire
and/or
length
or
location
of
the
buried
fiber
drop,
which
is
assumed
to
enter
the
SBU
ONT
from
the
ground
upwards.
The
enclosure
is
mounted
vertically.
If
at
all
possible,
the
enclosure
should
be
surface
mounted
on
a
flat
surface.
CAUTION
!
Ensure
the
SBU
ONT
is
grounded
before
making
any
other
connections.
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