Installation
TruSine 4.5 kW Inverter
Page 21
Owner’s Manual
D)
Insert the black, negative (-) cable end through the strain relief and into the negative terminal lug. Be
sure that all cable strands are completely in the lug.
E)
Insert the Allen screw into the negative terminal block and tighten to 275 inch-pound.
F)
Insert the red, positive (+) cable end through the strain relief and into the positive terminal lug. Be
sure that all cable strands are completely in the lug.
G)
Insert the Allen screw into the positive terminal block and tighten to 275 inch-pounds.
H)
Tighten the two cable clamps.
I)
Inspect the DC cable compartment to ensure that no foreign particles are present.
J)
Replace the cover plate over the DC cable compartment.
K)
Repeat steps E and G every 30 days.
Step 7:
Verify Installation. Verify all connections are tight and bright and the cables are secure.
5.3 AC
Wiring
Preliminary Considerations
1. Output and Input Voltages
The AC output voltage and required Aux AC input voltage of Model TSC24-4500 is 120 VAC, 60Hz.
The AC output voltage and required Aux AC input voltage of Model TSC24-4500D is 120/240 VAC, 60Hz,
single phase, 3 wire. L1 and L2 are 180 degrees out of phase and cannot be tied together. The unit may
be damaged if the AC input power is not 180 degrees out of phase. Examples of unacceptable power are
two phases from a three phase generator or power from two separate 120 volt generators.
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 which will accept up to #6 AWG wire.
Model TSC24-4500 – The 37.5 amp at 120 volt (4500 watt) inverter output capability requires #8 AWG wire
minimum be used for the AC output. The AC transfer switch is rated 30 amps at 120 volts.
Use input wire up to #6 AWG sized to suit the AC input source. The AC output wire should be the same
size as the AC input wire but not less than #8 AWG.
Model TSC24-4500D – The 18.75 amp at 240 volt (4500 watt) inverter output capability requires #12 AWG
wire minimum be used for the AC output. The AC transfer switch is rated 30 amps at 240 volts.
Use input wire up to #10 AWG sized to suit the AC input source. The AC output wire should be the same
size as the AC input wire but not less than #12 AWG.
3. The AC Input and Output wiring compartment is accessed from the top left side of the unit. Field wires are
brought in through two cable clamps to the terminal strip identifying the “AC Input” and “AC Output”
terminals.
Model TSC24-4500 – The 120VAC Input and AC output terminals are labeled L1, N, and G.
Model TSC24-4500D – The 240VAC input and AC output terminals are labeled L1, L2, N and G.
4. AC feedback will cause damage 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. NEC ‘Branch Circuit Rated’ circuit breakers must be installed in all installations having Aux AC input.
7. The CHASSIS BONDING LUG located on the front of the unit has been provided for safety to prevent
possible shock hazards. Connect a #8 AWG minimum size 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
Step 1: Connect the AC output. Remove the cover of the AC wiring compartment to expose the AC
