GE Limitamp CR194 - Lead-Covered Cable Termination; Pothead Cable Termination Methods; Non-Shielded Cable Termination; Interlocked-Armor Cable Termination

CR
194
Vacuum
Umitamp
400
Ampere
Control
4
.
If
contact
between
the
cable
and
an
adjacent
bus
cannot
be
avoided
,
as
may
be
the
case
with
the
two
500
-
MCM
cables
per
phase
,
tape
the
bus
in
the
immediate
vicinity
of
the
cable
contact
point
so
that
the
surface
creepage
distance
from
the
cable
to
the
bare
bus
bar
is
at
least
three
inches
.
Thus
,
the
surface
creepage
from
the
bare
bus
where
the
cable
terminates
,
to
the
bare
part
of
the
bus
where
the
cable
touches
,
will
be
at
least
seven
inches
.
The
thickness
of
tape
on
the
bus
should
be
approximately
inch
.
General
Electric
No
.
8380
tape
is
recommended
for
most
of
the
buildup
and
General
Electric
No
.
42005
Irrasil
®
tape
is
recommended
over
-
all
.
5
.
Where
more
than
two
500
-
MCM
cables
per
phase
are
required
,
they
should
be
brought
into
different
sections
,
or
an
incoming
line
compartment
must
be
provided
.
If
the
two
500
-
MGM
cables
must
be
terminated
with
stress
cones
,
a
cable
entrance
compartment
must
be
ordered
.
6
.
Run
all
the
low
-
voltage
wires
so
as
to
avoid
any
possible
contact
with
high
-
voltage
lines
.
Termination
of
Lead
-
covered
Cable
Termination
of
lead
-
covered
cable
requires
the
use
of
potheads
(
see
Figure
39
.
)
The
pothead
manufacturer
’
s
instructions
should
be
followed
in
terminating
the
cable
at
the
pothead
.
Standard
Limitamp
starters
have
space
for
locating
one
pothead
of
the
pull
-
through
type
which
accommodates
up
to
and
including
2
/
0
,
three
-
conduc
-
tor
,
5000
-
volt
cable
.
In
this
type
of
pothead
,
the
three
conductors
of
the
cable
are
fanned
out
within
the
pothead
and
pass
completely
through
it
,
with
the
pothead
sealing
and
terminating
the
lead
covering
.
For
larger
cables
,
potheads
with
terminating
bushings
are
required
.
In
this
case
,
or
when
more
than
one
pull
-
through
type
is
required
,
special
cable
entrance
compartments
are
available
.
Through
-
type
potheads
are
satisfactory
for
varnished
-
cambric
cable
indoors
.
Paper
-
insulated
cables
are
more
hygroscopic
and
,
since
the
only
thing
protecting
the
individual
conductors
from
moisture
is
tape
on
the
surface
,
high
humidity
might
cause
difficulty
.
Terminal
-
type
potheads
are
required
for
paper
-
insulated
cable
.
GE
NO
.
8380
TAPE
INSIDE
FOR
RUBBER
OR
NO
.
992
VC
TAPE
FOR
VARNISHED
CAMBRIC
IS
RECOMMENDED
.
ALTERNATE
:
BUILD
ENTIRE
END
SEAL
WITH
GE
IRRASIL
®
NO
.
42005
TAPE
O
CABLE
LUG
1
"
I
T v
!
CABLE
INSULATION
|
END
SEAL
5
"
MIN
I
12
Vi
"
GE
NO
.
8380
TAPE
2
"
MIN
NO
.
19
AWG
TINNED
COPPER
WIRE
2
"
GE
IRRASIL
®
NO
.
42005
TAPE
SHIELDING
TAPE
GE
NO
.
8380
TAPE
^
GE
IRRASIL
®
NO
.
42005
TAPE
2
"
GROUND
STRIP
N
2
Termination
of
Pothead
Cable
The
instructions
for
terminating
lead
-
covered
cable
by
using
potheads
apply
as
well
to
those
terminations
of
other
types
of
cable
where
potheads
may
be
desired
.
Figure
44
.
Termination
of
shielded
,
5000
-
volt
cable
showing
stress
-
cone
construction
.
1
.
Maintains
tight
fit
under
load
cycling
and
all
cable
operating
conditions
.
2
.
Track
-
proof
Insulating
EPDM
rubber
.
3
.
Heavily
-
Insulated
shield
edge
protects
high
stress
area
of
stress
cone
.
4
.
High
conductivity
semi
-
conducting
rubber
relieves
electrical
stress
.
5
.
Internal
step
positions
stress
cone
properly
on
cable
shield
.
6
.
Ground
clamp
provides
positive
ground
.
Termination
on
Non
-
shielded
,
Non
-
lead
-
covered
Cable
This
cable
is
generally
run
through
rigid
conduit
or
cable
raceways
and
brought
into
the
enclosure
by
the
use
of
conventional
cable
clamps
and
conduit
fittings
.
Refer
to
Figures
40
and
41
for
termination
details
.
Termination
of
Interlocked
-
armor
Cable
Interlocked
-
armor
cable
is
terminated
by
means
of
specially
designed
cable
fittings
.
These
terminators
consist
generally
of
mounting
bracket
,
armor
clamp
,
and
supporting
base
and
bushing
,
with
various
modifications
available
for
special
types
of
sealing
.
SEMI
-
CONDUCTOR
Figure
45
.
TERMI
-
MATIC
preformed
stress
cones
(
5
kV
)
.
22
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