Jayco SENECA, Owner'S Manual

Page: 42 / 93

SECTION 5
ELECTRICAL SYSTEM – 50 AMP
Maintenance
Inspect the power cord for cuts, cracks and
worn insulation. Have the power cord
replaced immediately if these symptoms are
noticed.
P
OWER
C
ONVERTER
The power converter converts 120-volt AC
power to useable 12-volt DC power when the
shore power cord is connected to an external
power source. The converter has a built-in
protective thermal breaker that will shut it
down should overheating occur. Overheating
can be caused by operating the converter
above its maximum power output for an
extended period of time, or by an obstruction
to its ventilation air flow. To reduce converter
heat build keep unnecessary 12-volt lights
and motors turned “off”
.
Keep the converter
cooling fins and fan clear of obstructions.
Inspection and maintenance
If the 12-volt power converter is not working
(auxiliary battery not being charged) check
the reverse polarity fuse(s) located on the end
of the converter.
There are no customer
serviceable parts inside the converter case
and the manufacturer’s warranty will be
void if
the case has been removed
. If you
have further concerns contact your dealer.
GFCI R
ECEPTACLE
O
UTLET
Grounding is your personal protection from
electrical shock. Each motor home has a
ground fault current interrupter (GFCI)
engineered into the electrical system. This
device has been designed to reduce the
possible injury caused by electric shock. The
GFCI will not protect against short circuits or
circuit overloads.
Test all GFCI receptacles monthly

Push in the GFCI “TEST” button. The
GFCI “RESET” button should pop out
indicating the GFCI receptacle has been
“tripped” and interrupted 120-volt power.

Push in the GFCI “RESET” button to
restore 120-volt power. Contact your
independent Jayco dealer for assistance if
the GFCI “RESET” button does not
restore 120-volt power and pops back out.
A “tripped” GFCI receptacle indicates that
abnormally high 120-volt current flow (a
ground fault) was detected through the
electrical system grounding circuit. A fault
condition can be caused by faulty wire
insulation, wet wiring inside an appliance, or
faulty electrical equipment connected to the
circuit, etc. All ground faults must be repaired
before use of the motor home
C
ALCULATING
E
LECTRICAL
L
OAD
When connecting appliances to the electrical
system, remember that 120-volt power usage
is limited to 30 amps per electrical system leg,
for a total of 100 amps. Be mindful of the fact
that each operating appliance collectively
places an added load on your 120-volt
electrical system.
An unintentional “trip” of a circuit breaker may
occur if you overload the motor homes and/or
campgrounds electrical system. The
amperage rating of individual appliances can
be calculated by dividing appliance wattage
consumed (normally listed on the appliance)
by nominal design voltage (120 for a 120-volt
appliance).
For example: 1200 watts divided by 120-
volts equals 10 amps.
To help prevent power surges from
damaging the electrical system and its
connected devices, please follow the
instructions listing below when connecting
to shore power.

Only connect the shore power cord to
properly wired 50 amp NEMA 14-50
120 volt power receptacles.

Do not connect the shore power cord to
any power receptacle until you have
contacted the campground owner
and/or premise attendant to verify
proper shore receptacle polarity and
grounding. Polarity indicators can be
purchased in most electrical and
hardware stores.
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