o
ELECTRICAL LOADS
AND
CONNECTIONS
All of
the tollowing descriptron
pertainsto
alternaling
cu rrent Onan electric
generating
setsfor
recreational
vehicles.
1. All
wiring must
meet
appljcable
local
eleclrical
codes.
Have a
qualilied
electrician
install and
inspect the wiring.
2. Wires must be adequate size,
properly
insulaled
and supported
in
an
approved manner.
3 Mount switches
and controls securely
to
prevenl
damage
trom
vibration
and road
shocks. All
switches must be
vibralion-proof to
prevent
ac-
cidental
opening orclosing
whilethe vehicle
is
in
motion.
4. lnstall an approved
junction
box
tor
feeder
con_
ductors
lrom the electric
generating
sel. lt
must
have a blank cover and
be inside compartment
(not
on set).
WirN,NG I
To
prct.nl
norlou!
9!.6
lrom
enl.ring Yehl-
--:-l
cle
lnl..iot. .e.l .ny op.nlnst
mlde l. lho
3el 6
comp.dn.hr torcondult, wldnc,.ic.
WIRE
TYPES
Use multistrand
wirc which meets
all applicable
codes as teeder
conductors, lrom electric
generating
set to compartment
iunclion
box.
l,tany installers use
multistrand wire throughout the
vehicle to
reducethe
danger ol breakage
trom vibration.
The
conductors
of the electric
generating
set
shall
have an ampacity not less than
115
percent
of the
nameplate current €ting ol
the
generator.
Neutral
conductors shall be
the
same
size as
the conductors
of
ihe
outside
Iegs-
Supply conductors
lrom the electricgenerating
selto
ihe
junction
box on
the
compartment
wall must be
installed in flexible conduit.
Oo
nol u3e 3olid melll conducloF
lh
con-
p.rlm€nr.
lhcy 6!t ddelop mrlrl
l.rbue
positive
oft, switching
device
must be
used-
Neutral
must be
switched.
u3e onry.Pproved
Power
3u
pply
.$embli€.,
Never
remove
groundiog
pln
irom
power
supPly
....mbly. lncorrecl or no
ground
ma, cau3e the
recrearion.l v.hicle to be
eleclrically hol."
RECONNECTIBLE, SINGLE.PHASE
GENERATOR
Voltage
selection on
reconnectibe single-phase
generators
is for use as 120/240
volts,3 wrre; or 120
volls, 2 wire. Use the connection
'or
lwo w're service
when
used lor motorstarting such
as air conditioning.
Balance
the load when connecting
for lhree wjre
service.
Current
for
any one output
lead must not
exceed nameplale
rating. When two or more
single-
phase
circuits are
available, divide
lhe load equally
belween them.
See Figure
7.
STARTING
CONTROLS
Remole control Onan
electric
generating
sets
are
designated
by
an
"R
inthemodelnumberandallow
the operator
to stan
the
set
rnside theveh icle, etc. See
operator's
manoal
for more specific intormation.
LOAD CONNECTIONS
Generalor
set load
wires fu11, [r2,
M3 and t\r4 ter
minate within
lhe
junction
box. Connect
and
join
wires
within
junction
box
in an approved
manner ior
desired voltage code.
See Figure
7.
On
motor homes
which have
provisions
tor using
outside
Ac
utility
power (separate
irom the electric
generating
set) the
neutral
as
well as lhe Hot"
lead
MUST be completely
isolated trom
the motor home
when load or
power
is
switched
The operation
ot a lypical lransier
device is shown in
Figure
L
ln addition to the
transler device, an over
current
protection
device
(circuit
breaker
or fuse)
shall be
provided
between lhe
transler device
and lhe
AC
circuit
in the
molor home- The
generalor
set
field
has inherent overload
protection
when any overload
is applied; frequency
will sag which causes
output
voltage to drop
and in turn lhe
generator
sel
fleld
drops to
zero vollage. A
ground
lault circLrrl
in-
terrupter should be
installed in the wiring system
lo
protect
all
branch circuits.
r.oF
ler
novemenr
lnd
evcnlurlly bre.l.
B..,u.e ol tne h.u rd. do not lie .le.klc.l
DISCONNECT SWITCH
The feeder conduclors from
the set compartment
musl lerminate
in a double-pole,
double-ihrow
positive
oll
switch
device
for 1m
voltoperalion before
the vehicle distribution
panel.
This assures
the out-
side
power
source cannot be
connected
simultaneously with the
electric
generating
set.
For
12O/24O voll operation, a
3-pole,
double-throw,
wAtl{rNG
13
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