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DC Wiring Installation
The DC input terminals are located in the rear right side of the unit and accessed from the top. The connections
are 5/16-18 brass studs that require a lugged connection and are to be tightened by a torque wrench. The
positive and negative cables enter the compartment through separate strain reliefs located at the right front of
the unit.
WARNING
Never make electrical connections "live". Make the connections to the inverter first, and the battery, last. Make
certain the ON/OFF control switch on front of inverter is in the OFF position before connecting to the battery.
NOTE
Severe damage to the inverter will result, which is not covered under warranty, if wire fragments or other metal
particles enter the inverter through the DC wiring compartment.
Procedure
Step 1:
Turn the inverter OFF and disconnect all AC and DC power to the wiring harness. Make sure power to
the inverter wiring is disconnected. Verify that the inverter is turned OFF (the Inverter ON-OFF switch is
in the OFF position).
Step 2:
Select a location for the unit. An ideal installation location has the following characteristics:
Close to the battery without being in the battery compartment (usually within six feet).
Protected from the weather.
Well ventilated.
Step 3:
Connect the DC cables to the inverter:
A)
Remove the cover plate on the DC cable compartment exposing the positive and negative threaded
studs.
B)
Remove the two flat washers, split ring washers, and nuts from the threaded studs.
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.
4.3 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
ITC-Series Inverter
Page 21
Installation
Owner's Manual 8/07/03
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