Thor Motor Coach CLASS B, Owner'S Manual

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E L E C T R I C A L S Y S T E M
T H O R M O T O R C O A C H | M A D E T O F I T
NOTE: Always turn OFF the air conditioner, furnace,
and all electrical appliances before connecting and
disconnecting the shore power cord from the 120
volt AC power source and/or before operating or
turning off the generator.
When you are ready to leave the campsite, reverse the shore
line power cord connection process. Use care to prevent
damaging the electrical connection pins when connecting
or disconnecting the shore line power cord. Grasp the plug
to remove the shore line power cord from the outlet; do not
unplug it by pulling on the cord.
Shore Power Wiring Configuration
For safe electrical power for your motorhome’s electrical sys-
tem, it is important that the external power source is correctly
wired. If the shore power source is incorrectly wired, it is pos-
sible that the chassis frame and metal objects could become
energized. It is also extremely important that the shore power
source is properly grounded, thus protecting from the physi-
cal hazards of electrical shock.
Below are illustrations of the proper wiring for the 50 amp
and 30 amp shore power cords and their corresponding pow-
er receptacles. Please talk to the campground’s maintenance
personnel if you have any questions or concerns regarding the
wiring of the campground’s electrical hook-ups.
G = Ground
N = Neutral
L1 = Leg 1 (120 VAC measured to neutral or ground)
G
N
L1
G
N
L1
Standard 3-prong, 120 volt, 30 amp RV shore power plug and
receptacle wiring configuration
Shore Line Cord Plug Adapters
Plug adapters are available to connect your 3-prong, 30 amp
shore power cord to a 3-prong, 15-20 amp standard house-
hold electrical receptacle.
Only do so as a TEMPORARY means of supplying limited
electrical power to your motorhome. Do not use high-demand
electrical devices, such as air conditioners and microwave
ovens. Electrical overloads can easily happen and could cause
damage to the electrical devices of your motorhome.
NEVER ADAPT A 30 AMP SHORE POWER CORD TO A
50 AMP EXTERNAL POWER SERVICE.
SEVERE ELECTRICAL OVERLOAD TO THE SHORE
POWER CORD AND/OR THE MOTORHOME'S
ELECTRICAL SYSTEM COMPONENTS COULD CAUSE
ELECTRICAL FIRES OR OTHER DAMAGE.
WARNING WARNING
REDUCE POWER LOADS WHENEVER ADAPTING A
LARGER AMPERAGE SHORE POWER CORD TO A
SMALLER SHORE POWER SOURCE.
DO NOT USE POWER-CONSUMING ITEMS, SUCH AS
AIR CONDITIONERS, MICROWAVE OVENS, ETC.
CAUTION CAUTION
USE EXTREME CAUTION WHENEVER ADAPTING
SHORE POWER CORDS TO A UN-MATCHED
(CURRENT) ELECTRICAL SERVICE.
• 30 AMPERAGE SHORE POWER CORD TO A 15-20
AMPERAGE SERVICE
THE SIGNIFICANTLY REDUCED AMOUNT OF
AVAILABLE INCOMING POWER COULD DAMAGE
ELECTRICAL MOTORS, COMPRESSORS, AND OTHER
DEVICES.
WARNING WARNING
Shore power cord
adapter