6-1
5 - DASH / AUT
O
SECTION 6 – ELECTRICAL
12-VOLT CHASSIS
ELECTRICAL SYSTEM
A trailer chassis electrical system includes:
•
Trailer battery
•
Charging system
•
Brake system
•
Taillights
•
Turn signals
•
12-volt convenience outlets
•
12-volt power vents
•
Fans
•
Motors
•
Freshwater pump
•
Any 12-volt entertainment equipment
•
All 12-volt interior lighting fixtures
•
Other vehicle lights and accessories.
The tow vehicle’s 12-volt battery, the trailer’s
12-volt battery or the AC/DC power converter
may provide 12-volt power. The battery’s charge
is maintained by the tow vehicle alternator, or by
the charging circuit included in the power
converter.
12-VOLT FUSE BLOCK PANEL
The 12-volt fuse block panel for DC circuits is
located in a cabinet in various locations by
model. Fuses are automotive type and should
always be replaced with the same type and
amperage rating. Replace bulbs with same type
or equivalent.
12-VOLT CIRCUIT BREAKER & RESET
In all units, 30-amp circuit breakers have been
installed to protect the trailer’s 12-volt electrical
system.
Travel trailers circuit breakers will be located
inside a covered junction box attached inside the
front cross member of the A-frame. Additional
circuit breakers may be used for slideout switch
protection.
Fifth wheel circuit breakers will be located
inside a covered fuse box attached inside the
baggage compartment with additional 30-amp
breakers for slideout protection and other 12-volt
circuits.
NOTE: Not all 30-amp circuit breakers are
equipped with the reset switch. Resets on
30-amp circuit breakers for slideout
motors are automatic reset switches.
120-VOLT AC SYSTEM
The 120-volt AC system provides grounded
electrical service for the refrigerator and optional
appliances such as air conditioners, microwave
ovens, water heaters, TVs, etc. Other appliances
such as toasters, lamps, etc. may also operate on
the 120-volt system.
The 120-volt system also provides a power
source for the power converter. The trailer is
equipped with a heavy-duty power cord to
connect to an external 120-volt, 30-amp rated AC
service. Some units have an optional 120-volt,
50-amp service.
•
The cord and connector are molded together
to form a weatherproof cable assembly.
•
Do not cut or alter the cable in any way.
•
Do not remove the cable connector ground pin
or bypass the ground circuit of the trailer.
•
Be sure the ground is maintained if an adapter
is used to plug into an electrical service.
•
Do not use a two-conductor extension cord, or
any cord or cable that does not assure
appropriate and adequate ground continuity.
WARNING
DO NOT INSTALL 12-VOLT FUSES
WITH AMPERAGE RATINGS
GREATER THAN THAT SPECIFIED ON
FUSE BOX LABEL.
