Owner`s manual

Installation
ITC-Series
Inverter Page 22 7/18/03
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 with
code. Make certain to route the Signal wires out of the provided port (lower most on the right side of
the unit). This is to insure that there are no problems that may arise from the poor insulation
properties of most signal level wire. Make certain that the auxiliary contact and option wiring are
routed below the barrier, and the AC Power Wires above the barrier.
Step 1: Connect the AC output. Remove the front cover to expose the AC input and output terminal strips.
Identify the right terminals labeled “AC Output”. Insert the output field wires through the nearest (to the
board) strain relief into the AC wiring compartment. Tighten the strain relief. Connect the copper field
wires to the proper AC output terminals and tighten to 9 lb-in max.
Warning:
Do not attempt to us a stranded wire. Stranded wire has a tendency to break off some of the
strands and will drop into the unit causing possible failures. If a stranded wire is used, the appropriate
“ring terminal” must be used.
Step 2: Connect AC Input. Identify the terminal strip’s terminals labeled “AC Input”. Insert the field wires
through the (closest to the front panel) strain relief into the AC wiring compartment. Tighten the strain
relief. Connect the copper field wires to the proper AC input terminals and tighten to 9 lb-in max.
Replace the front cover.
Warning:
Do not attempt to us a stranded wire. Stranded wire has a tendency to break off some of the
strands and will drop into the inverter causing possible failures. If a stranded wire is used, the
appropriate “ring terminal” must be used.
Step 3: Connect Bonding Lug. Use a 8 AWG or larger copper conductor to connect the chassis bonding lug to
the chassis of the vehicle, the installation’s grounding system, or to earth ground.
Step 4: Verify Installation. Verify all connections are tight and secure for maximum performance.