INCORPORATED
®
Installation
ITC-Series
Inverter
Page 22
10/07/05
C) Put lugs (For the appropriate wire size called out in Table 4-1) on the ends of the Positive and Negative
DC Cable ends with the appropriate terminals. Be sure that all cable strands are completely in the lug
to avoid shorting to another conductor.
D) Insert the black, negative (-) cable end through the strain relief and onto the negative terminal threaded
stud, and tighten to 275 inch-pounds. .
E)
Insert the red, positive (+) cable end through the strain relief and onto the positive threaded stud, and
tighten to 275 inch-pounds.
F)
Tighten the two cable clamps.
G)
Inspect the DC cable compartment to ensure that no foreign particles are present.
H) Replace the cover plate over the DC cable compartment.
I)
Repeat steps A, D, E, and H every 30 days.
Step 4: Route DC input cables. Route the negative and positive DC input cables from the inverter to the
battery. If required, protect cables where they contact hard, sharp edges.
Step 5: Install the in-line fuse. Install the in-line fuse in the red, positive DC input cable between the battery
and inverter, within 18 in. of the battery or DC wiring bus system.
Step 6: Once all cables are double checked for proper connection and polarity, connect the battery to the
appropriate cable.
Step 6: Verify Installation. Verify all connections are tight and the cables are secure.
AC Wiring
Preliminary Considerations
1. Output and Input Voltages
The ITC is designed to operate with an AC Output Voltage and AC Input Voltage of 120 VAC, 60Hz.
2. AC Wire Size
To properly size the AC input and output wiring the installer must consider the inverter output capability, the
inverter passthrough capability, and the battery charger input requirement. The AC input/output terminal
strip is a compression lug style that will accept up to 10 AWG copper wire.
Model ITC12-3200
– The 26.7 amp at 120-volt (3200-watt) inverter output capability requires #10 AWG
wire minimum is used for the AC output. The AC transfer switch is rated 30 amps at 120 volts.
Use input copper wire up to 10 AWG to suit the AC input source. The AC output wire should be the same
size as the AC input wire but not less than #10 AWG.
3. The AC Input and output wiring compartment is accessed by removing the front panel and is on the right
side of the unit. Field wires are brought in through two cable clamps to the terminal strips identifying the
“AC Input” and “AC Output” terminals.
4.
If AC Input is wired into the AC Output, damage will occur to the inverter!
The power
distribution circuits must be designed to prevent AC power from an external source (shore power or a
generator) from feeding back into the inverter's AC output.
5. The inverter AC output must be wired to a Ground Fault Circuit Interrupter (GFCI) to ensure a safe
installation. Always maintain an isolated neutral downstream from the GFCI to prevent nuisance tripping.
6. The Circuit Breakers on the front panel are NOT BRANCH RATED! In all installations please follow all
national and regional electric codes and use the mandated branch rated breakers for power distribution.
7. The CHASSIS BONDING LUG located on the right of the unit has been provided for safety to prevent
possible shock hazards. Connect a #8 AWG minimum wire to this terminal and then to chassis of the
vehicle, the installation's grounding system, or to earth ground.
Failure to connect the chassis bonding lug to the chassis of the vehicle, the installation's grounding system,
or to earth ground may result in a lethal shock hazard.
AC Wiring Procedure (refer to Figure 3-1)
Warning:
Make certain that the AC field wiring (upper right of the wiring compartment) and the Signal wiring
(at the lower right of the wiring compartment) are kept separate to avoid any problems or conflicts
