Chassis Electrical; Coach Electrical; Converter/Inverter - Thor Motor Coach tuscany 2013 Owner's Manual

The basic utility systems in your unit can be classified under two general titles, Electrical,
and Propane. This section outlines these systems, describing their function, operation,
and simple maintenance. This section is not intended as a service guide. Should a
problem arise, we recommend that you contact your Thor Motor Coach dealer.
The electrical system in your motorhome is designed and built in accordance with the
latest codes, standards, and regulations effective at the time of construction. It consists
of two types of systems, alternating current (AC) 120 Volt service and direct current (DC)
12 Volt service. Because of the many model variations and options, it is not possible
to provide wiring diagrams in this manual. We recommend that any electrical work be
done by a Thor Motor Coach dealer or a qualified RV electrician.
The chassis electrical system is separate from the coach electrical system, except for
the emergency start which may provide power from the auxiliary batteries to the chassis
battery. The chassis system gets its power from the automotive battery, providing power
to all of the dash controls and their functions. If any chassis electrical system should
fail, first check the fuses at the circuit panel under the interior dash on the drivers' side.
These are automotive type fuses, which are available at many service stations. The
dash fuses will be located either under the dash on the drivers' side, or in the Battery
Control Center (BCC) in the compartment in front of the drivers' front tire.
Replace fuses or bulbs only with those of equivalent size and type as
marked on the fuse or bulb. Incorrect sizing will not match component
circuitry causing a possible electrical hazard.
The direct current (DC) system supplies all the power to operate the 12 Volt devices in
your vehicle. It is made up of four parts:
1. Auxiliary Coach Batteries
2. Chassis Batteries

3. Converter/Inverter

4. Battery Control Center (BCC)
The system has been designed to provide adequate power during travel, dry camping
or campground use.
When shore power is unavailable, the coach batteries power all house 12 Volt
devices. The coach batteries are of the golf cart variety and are capable of being deeply
discharged. With a large reserve rating, the batteries are able to provide limited use for
several days before needing to be recharged. Because of the large power rating, the
batteries must be recharged for a minimum of 24 hours to reach a full charge.
Never expose batteries to open flame or electrical spark. Chemical
action in the battery generates hydrogen gas which is flammable and
explosive. Do not allow battery electrolyte (battery acid) to contact skin, eyes,
fabric, or painted surfaces. Wear eye protection when working with batteries.
Charging of the batteries comes from one of two sources, the engine alternator or the
converter. When driving, circuitry in the BCC (Battery Control Center) directs charging
current from the chassis electrical system to the coach battery bank. When power from
Chapter 7 - Technical Systems
CHASSIS
ELECTRICAL

COACH ELECTRICAL

CONVERTER/
INVERTER
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