GE AV-Line - Main and Load Cable Installation; Main Cable Installation (AV-3;4)

Installing
The
Main
Cable
f
AV
-
3
,
AV
-
4
SWITCHBOARDS
UTILIZING
CORD
FOR
SHORT
CIRCUIT
PROTECTION
A
A
ft
g
*
CABLE
BRACE
|
oT
o
B
Cal
[
o
;
FIGURE
7
C
FIGURE
7
D
PRIOR
TO
INSTALLATION
INSPECTION
AFTER
MAIN
CABLE
INSTALLATION
Before
any
installation
work
is
performed
,
study
all
drawings
furnished
by
the
General
Electric
Company
for
the
particular
installation
.
These
include
arrangement
drawings
(
front
,
end
and
plan
view
)
,
connection
diagrams
and
schedule
of
equip
-
ment
.
Any
material
external
to
the
equipment
which
may
be
required
to
meet
any
local
codes
(
railings
,
etc
.
)
is
not
furnished
.
To
prevent
heating
,
there
should
be
no
closed
loop
of
steel
around
a
single
conductor
or
group
of
conductors
which
does
not
include
all
the
conductors
(
including
the
neutral
)
of
the
circuit
.
If
the
conductors
must
pass
through
separate
holes
in
a
piece
of
steel
,
slots
should
be
cut
between
the
holes
.
Do
not
allow
cables
carrying
heavy
current
to
come
near
instruments
or
meters
as
this
may
affect
their
accuracy
.
Use
the
minimum
amount
of
cable
necessary
to
accomplish
the
connections
.
The
increased
resis
-
tance
of
longer
cables
generates
unneccessary
heat
.
Main
ca
-
ble
lashing
should
be
checked
bi
-
monthly
.
INSTALLATION
PROCEDURES
FOR
MAIN
CABLE
WITH
SHORT
CIRCUIT
PROTECTION
Align
conduit
holes
in
a
linear
orientation
a
distance
equal
to
the
radius
bend
of
the
cable
.
Consideration
should
be
given
to
in
-
stalling
conduits
or
sleeves
which
might
be
required
for
future
connections
(
see
Figure
7
D
)
.
Run
and
bend
the
main
cable
in
a
most
convenient
orientation
,
making
sure
the
main
cable
has
been
located
directly
up
against
cable
braces
before
it
connects
to
the
main
cable
terminals
(
see
Figure
7
C
)
.
Lash
the
main
cable
according
to
Figure
7
C
above
,
using
a
polyester
braided
rope
having
atensile
strength
of
2000
lbs
.
minimum
,
making
6
revolu
-
tions
around
the
“
A
”
and
“
B
”
phase
main
cables
and
6
revolu
-
tions
around
the
“
B
”
and
“
C
”
phase
main
cables
.
Now
with
the
remaining
cord
,
wrap
the
main
cable
lashing
to
the
cable
brace
in
between
phases
with
4
to
5
revolutions
,
and
tie
a
knot
to
the
cable
brace
as
you
complete
your
last
revolution
.
All
revolutions
should
be
made
as
tight
as
possible
so
as
to
prevent
whipping
during
short
circuits
.
7
Courtesy of NationalSwitchgear.com