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The GFCI receptacle should be tested initially when the motorhome is purchased, and
at least monthly thereafter.
To test the circuit, use the following procedure:
1. Make sure power is on to the circuit. A test light or 120 volt lamp
will work.
2. Push the test button.
3. The red reset button should pop out.
4. All power should be interrupted to outlets protected by the GFCI.
5. Verify by plugging in a light at these outlets, and pushing in the
reset button.
If the red reset button does not pop out after pushing the test button, or GFCI
circuit continues to trip, or if the power is not interrupted to the test light,
immediately turn off power at the circuit breaker panel and have a qualified
electrician check it out.
Note: The GFCI does not protect any circuit other than the one to which it
is connected.
A 12 Volt DC distribution panel is located next to the 120 Volt circuit breakers. The
panel contains circuits with replaceable fuses for protection of motorhome 12 Volt
lines. If any line is shorted, the fuse will ‘“blow”. Replace the fuse with the same size
fuse. DO NOT replace with a larger fuse than indicated.
If this action does not solve the problem, there may be a “short” somewhere along
the 12 Volt line, or at a non-fused 12 Volt component on the line. Check the 12 Volt
line and any components along the line. Locate the “short” and take necessary steps
to repair it. If you cannot locate the problem, have a qualified electrician check it out.
It is a good idea to keep additional fuses on hand in the motorhome. Replacement
fuses are available at filling stations, hardware stores, or automotive supply stores.
Remember that the replacement fuse must be the same amperage rating as the
original.
Your motorhome chassis is equipped with an automotive 12 Volt fuse panel located
below the dash near the steering column and/or under the hood. You should refer to
the chassis owner’s manual for details on these fuses.
The Class A motorhome also has a 12 Volt fuse panel, electrical distribution box,
located on the fire wall under the hood. These fuses protect the automotive features
which are installed by Thor Motor Coach. There is a complete breakdown on the
various fuses printed on the backside of this fuse panel cover.
The 120 Volt system is protected by circuit breakers which automatically shut the
circuit off if the circuit load is too heavy, or a short circuit occurs. If a circuit breaker
has been tripped, do not reset the breaker until the cause of the problem is identified
and corrected.
The generator also has one or two AC circuit breakers, and a DC fuse on the generator
control panel. If an interruption in generator operations occurs, check to see if any of
these have been tripped. Consult the manuals provided with the generator before
attempting maintenance on the generator.
12 VOLT SYSTEM
FUSES
Interior
Automotive
CIRCUIT
BREAKERS
Electrical Systems
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