Onan LTC Series - Page 9

INSTALLATION
ONAN
recommends
that load transfer controls be installed
by an
experienced
electrician, observing
all
normal
safety
precautions
and
local
codes.
LOCATING THE
CONTROL
The
point
at
which the
load
transfer
cuts
into
the existing
electrical circuit
varies according to
application and type
of
entrancer
switch.
There must be
a switch and fuses
in
the
commercial
line before
the control.
Both
the
generator
output and ltrad
should
be similarly
protected.
To
provide
maximum plant protection,
have a fused
switch
or
circuit
breaker
with the same capacity and electrical characteristics
as the
plant
connected between
the load
transfer conhol and
p
lant.
When
a
standby
plant
protects
the
complete electrical
service,
it
is normally installed
between
the
main
entrance
switch
and the
disbibution
panel
(Fig.
7).
If
the
protection
is
limited to
a
single
emergency distribution
panel,
cut
inb
the circuit
after
the
entrance
switch
fuses for the
emergency
distribution
panel
(Fig.
8).
If the entrance
switch
is of
the
compact type where
branch
and
main
fuses
are
in
a
single
cabinet
(such
as used
in
most modern
homes) cut
into
the
main
entrance
between
the
meter and
switch. Then
install
an additional
fused
switch
ahead
of
the load transfer control
(Fig.
6t.
LOAD
WIR
ES
METER
LOAD
TRANSFER
CON TROL
PLANT
CONTROL
BOX
r-,i.dE
FROM
SERVICE
E NTN
ANCE
FUSED
swtTcH
BOX
R EMOTE
CONTROL
WIRES
'-----
WIRES
FROM
GEN.
SIDE
OF
TRANSFER SWITCH
.tt-'--t-
I
I
I
I
I
i
I
L
FIG.
4