©
2015 Sensata Technologies
7
2.0 Installation
Figure 2-2, RV OEM System Diagram
AC
Main Panel
(Branch Circuit
Breaker to
Transfer
Switch:
15A max)
AC IN
AC OUT
AC Source
(120VAC, 60 Hz Sinewave)
CSW-TS15
Transfer Switch
CSW Series
Inverter
Notes: The NEC requires overcurrent
protection for wiring and equipment in
both AC and DC circuits. As shown in
this diagram, the RVIA allows the
following application where an
inverter is installed in a RV.
Pass-thru mode: When the AC source
(generator or shore power) powers
loads thru a transfer switch (i.e., pass-
thru mode), the conductor from the
transfer switch to the dedicated load
will be protected as long as the branch
rated circuit breaker at the AC source
does not exceed the ampacity of the
conductor feeding the dedicated load.
Inverter Mode: When the inverter is
powering loads using power from the
battery (i.e., Inverter mode), the
conductor from the inverter output to
the dedicated load will be protected as
long as the ampacity of the conductor
is sized based on the inverter’s AC
output rating. In Inverter mode, the
inverter has overcurrent protection to
limit the output current and to protect
the conductor.
Dedicated
AC Load
(15A max)
DC
Disconnect
Battery
Bank
Fuse
DC
Ground
(Vehicle
chassis, DC
ground bus,
or engine
negative bus)
