Airstream Interstate 2019 - 120-Volt Automatic Switch over Box; Generator;City Power; Status

Interior
5-12 2019 Interstate
Generator/City Power
A
B
C
a� To Energy Management System module main
breaker
b� From generator
c� From shoreline
1� When plugged into shoreline power, the current
path is from C to A�
2� When you start your generator, the points switch
and the power ow is from B to A. Stopping the
generator releases the points back to shoreline
feed�
3� If you’re plugged into shoreline and you start the
generator, the points still switch since the generator
has the priority, so the current ow is still B to A.
NOTE
Make sure to read and understand all electrical
Component owner’s manuals provided in the
owner’s Packet before operating the touring coach.
Observe all operating instructions and Warnings as
well as all recommended maintenance schedules
and procedures.
WARNING
Your Touring Coach is equipped with an Automatic
Generator Start System. Exposure to carbon
monoxide, moving parts, and electricity hazards
are possible due to unexpected automatic starting.
Press the “SELECT” button to switch to 20-amp service
if it is necessary to use a 20-amp adaptor or you know
the shoreline power is 20 amp, The screen will display
“Service 20A”�
The generator supplies 20-amp service and is set to
switch the system automatically to the 20-amp mode
whenever the generator is the power source� The
screen will display “Generator 20A” when the generator
is supplying power�
The Display Panel is protected by a 5-amp automotive-
type fuse located under the EMS 120-volt Distribution
Panel cover� Remove four screws from the cover to
access the fuse�
Status
The roof A/C and microwave are set at the factory to be
the controlled circuits and are shed in this order�
This means if a power hungry appliance is plugged
into an outlet and the system begins to use more than
30-amps it will begin to shed loads and will shut off the
A/C�
120-Volt Automatic Switch Over Box
The switch over box automatically switches the 120-
volt feed to the Energy Management System Module
from shoreline to generator and back as you choose
which way to power the touring coach� You simply
decide whether to plug into a 120-volt shoreline or
start the generator and the box will do the rest� If the
generator is accidentally started while plugged into
shoreline the box will sense the generator incoming
power, contact points inside the box will switch
cutting the shoreline connection, and establishing the
generator connection� This protects the system from a
possible overload from dual power sources�