ITS-30R TRANSFER SWITCH
OWNER’S MANUAL
The ITS-30R provides automatic power switching between
two separate 120 volt AC input sources, including
powercords, onboard generators, or onboard inverters. The
ITS will sense the presence of available supplies and au-
tomatically select the proper one.
The ITS can be installed at the electrical entry of the RV
on the line side of the main distribution panel, or it can be
installed on the load side of the panel between the main
panel and a sub panel, allowing switching for either the
entire electrical load or only designated circuits.
INSTALLATION
READ AND FOLLOW ALL SAFETY INSTRUCTIONS
I. DISCONNECT POWER
Make sure the generator is off, the external powercord is
unplugged, and the inverter, if any, is shut off.
II. MOUNTING LOCATION
The ITS mounting location may be on any interior surface
where the unit will be out of direct weather. The chosen
location must be accessible after installation is complete
to facilitate future servicing. If possible, mount the ITS
near the powercord entry or the location of the generator
output. Typical locations include under counter cabinets,
below closet compartments, inside the bed pedestal or
cabinets, overhead cabinets, under-floor storage compart-
ments accessed from the vehicle exterior, etc. CAUTION:
TO PREVENT EXPOSURE TO FOREIGN CONTAMINANTS,
DO NOT MOUNT THE TRANSFER SWITCH IN AN ENGINE
COMPARTMENT, UNDER KITCHEN SINK DRAINS OR WA-
TER PIPES, WITHIN THE BATTERY COMPARTMENT, OR
ANY COMPARTMENT DESIGNED FOR STORAGE OF
FLAMMABLE LIQUIDS SUCH AS GASOLINE.
III. ELECTRICAL PREPARATION
Any numbered knockout on the ITS-30R can be used for
installation. Choose a knockout that will facilitate installa-
tion and service within the selected mounting area.
IV. MOUNTING
Mount the ITS-30R with screws through holes provided in
bottom corners of the can. The unit should be screwed to a
solid surface firmly enough to hold its weight during ve-
hicle operation.
V. ELECTRICAL CONNECTIONS
A. Attach an 8 gauge chassis ground wire to the transfer switch
ground bar. A direct access hole to the ground bar is provided
through the enclosure for convenience.
B. Determine proper connections of wire conductors to electrical
terminals. On 120 VAC wiring the ground wire is bare or green,
the neutral wire is white, and the hot wire is black.
C. Strip the outer jacket from all of the incoming cables. Strip insu-
lation from all ends of the copper conductors. Insert cables through
clamps in openings. Do not tighten cable clamps at this time.
D. Route internal ground wires around lower area of enclosure
and secure to ground wires away from electrical contacts on
components to avoid the possibility of electrical short-circuit.
E. Connect the ground wires to the ground bar. Tighten terminals
to a minimum of 20 inch-pounds.
F. Connect the neutral (white) wire connections.
G. Connect the hot wire(s) (black).
I. To connect the wire leads, hold the wires parallel to each other
so that the wire tips are even, then secure with a wire nut. Use
the proper size nut. Manually tighten nuts as tightly as possible.
Verify that all connections are tightened.
J. Tighten cable clamps on switch enclosure.
K. Attach lid. The lid is designed to snap on and should not open
without deliberate effort.
INSTALLATION BETWEEN POWERCORD AND GENERATOR
(CONFIGURATIONS A, B)
Connect the powercord leads to terminal 7 and 8 (on the narrow
end of the relay); these are the
normally closed (N.C.) contacts.
Connect the generator leads to terminals 5 and 6 (on the shoul-
ders of the relay); these are the
normally open (N.O.) contacts.
Connect output to panel to terminals 3 and 4 (on the wide end of
the relay). The ITS-30R is designed with a time delay module to
provide generators a brief warm-up period before supplying the
load. The bypass switch on the time delay module should be in the
“off” position (marked “1”). See Diagram 1.
Summary of Contents for ITS-30R
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