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Electrical Systems - 8
2014 Holiday Rambler Travel Trailer
WARNING:
This panel contains high voltage that
can cause serious injury or death.
Before beginning any work or testing
procedures involving the electric
panels or any of the branch circuits, be
sure to unplug the recreational vehicle
from shore power. Certain testing
procedures can require the AC power
to be on. Only qualified technicians
with electrical backgrounds should
attempt any testing or repair
procedures.
DC fuses supply power to individual circuits
for interior lighting or the furnace for example.
Refer to the panel labels for specific circuit
assignments.
Branch circuits supply AC power to the
different items or “loads.” An electrical load
is any item or device that uses current when
supplied with an electromotive force. Should a
breaker “trip” from an over-current condition,
or from a shorted circuit, the load to which
the breaker is supplying the electromotive
force should be reviewed or disconnected to
determine the cause of the trip. If no cause
is found, or not readily apparent, reset the
breaker by toggling the breaker to the Off
position, then back to On. Should the breaker
trip again after the load is reapplied, it may
indicate a fault with that particular load. Do
not continue to reset breaker until the problem
is diagnosed and corrected.
WARNING:
If a fuse blows, replace the fuse with
same amperage rating and type.
Installing a higher amperage fuse can
damage the wiring or the item the fuse
is protecting or may cause a fire. If the
fuse repeatedly blows after replacing,
do not continue to replace it. Have the
problem diagnosed and corrected by a
qualified technician.
GFCI Breakers & Outlets
A
Ground Fault Circuit Interrupter
(GFCI) can be found in two different types
of applications. One type is incorporated in a
breaker used in 120 Volt AC breaker panels;
the other is incorporated in an outlet.
The GFCI, whether it is a breaker or an
outlet, offers two types of protection. One type
of protection is from over-current or shorts to
guard against hazardous ground fault currents
that can result in injury or death. Ground fault
currents are currents that flow from the “hot”
or power terminal through a person to the
ground. Example: touching a faulty appliance
while making contact with an electrical ground
such as a water fixture or the earth.
Test the ground fault outlet or breaker once a
month to ensure it is operating. Use the TEST
button on the outlet or breaker. It should trip
with an audible “click.” The breaker or outlet
will not trip if AC power is not present at the
device. If power is present and the device will
not trip, replace it before using that circuit.
The GFCI offers protection against the type
of shock that can result from faulty insulation,
wet wiring from inside an appliance, or any
device or equipment plugged in or wired to
that circuit. The ground fault portion of the
outlet or breaker uses sensitive electronics
inside the outlet or breaker to detect a ground
fault problem. The electronics monitor the
normal current of power flowing to the hot
(black) wire through the load (eg. a light bulb
or appliance) and coming back on the neutral
(white) wire. If a small amount of current
comes back on the safety ground wire, the
electronics will trip the breaker or outlet,
stopping the flow of electricity.
The amount of current it takes to trip the
device from a ground fault varies slightly from
the different outlet or breaker manufacturer
(approximately 4 to 6 milliamps).
NOTE:
One milliamp is 1/1000 of one Amp.
Electrical shocks resulting from ground
faults can be felt, but such a shock is
considerably less than one without ground
fault protection. People with medical
conditions that make them susceptible to shock
can still be seriously injured. A GFCI outlet or
breaker will not protect against shock from a
normal current flow.
GFCI circuit
breaker
RM03A0003
120 volt GFCI outlet
RESET
teSt
060072