Calculating 30 Amp Electrical Load - Jayco 2016 White Hawk Owner's Manual

JAYCO TOWABLE
The 50 amp external utility power cord is commonly referred to as the "shore" power cord.
It is designed to mate and properly function with 50 amp "shore" power receptacles
available at most campgrounds.
The shore power cord is designed to continuously carry the 50 amp current flow required
to power each leg of the electrical system. It also creates a critical ground connection
between the vehicle electrical system and the campground shore power receptacle.
120- (30 AMP) AC S
VOLT
Your recreation vehicle may be equipped with a 30 amp 120-volt 60hz AC electrical
system. The entire system is designed to operate on 1 leg of 120-volt power at a maximum
current flow of 30 amperes. Depending on your model, the 30 Amp input will look like
one of the two examples shown here.
Exposure to voltages higher or lower than a nominal 120-volts will damage or shorten the
service life of the electrical system and appliances. The 30 amp 120-volt 60hz AC
electrical system can be powered by the 120-volt 60hz utilities found in RV campgrounds
or by 120-volt 60hz generator power.
The following electrical components will only operate when your motorhome is connected
to shore or generator power: 120 to 12-volt power converter, air conditioner, refrigerator,
microwave oven, television(s), home theater system(s), electric water heater, washer,
dryer, fireplace, and appliances plugged into convenience receptacles.
Circuit breakers and fuses will not offer complete protection of the electrical system
in the event of power surge or voltage spike.
Make certain the external power source you connect the power cord to is a properly
wired 30 amp NEMA TT-30 RV receptacle and not 240 volt AC.
C 30 AMP E
ALCULATING
When connecting appliances to the electrical system, remember that 120-volt power usage
is limited to a total of 30 amps. Be mindful of the fact that each operating appliance
collectively places an added load on your 120-volt electrical system.
An unintentional "trip" of a circuit breaker may occur if you overload the recreation
vehicle and/or campground electrical system. The amperage rating of individual appliances
can be calculated by dividing appliance wattage consumed (normally listed on the
appliance) by nominal design voltage (120 for a 120-volt appliance). For example: 1200
watts divided by 120-volts equals 10 amps.
Only connect the shore power cord to properly wired 30 amp NEMA TT30 120 volt
power receptacles.
SECTION 6 – ELECTRICAL SYSTEM
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