Owner`s manual

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Installation and Start-up

IT SERIES Industrial True Sine Wave Inverter Owners Manual

7. Proper DC cable size is critical

for the performance and safe operation of the inverter system. The

DC Cable and Fuse Sizing Chart shows the minimum recommended cable sizes. These sizes allow

a ½ volt maximum voltage drop at maximum inverter capacity and will insure optimum inverter

performance. Quick DC cable connectors are available. See Parts and Accessories.

Do not use the vehicle chassis as the DC negative conductor. The negative cable should be the same

size as the DC positive cable and should be connected directly to the battery negative terminal.

DC cables should be as short as possible.

Figure 10 DC Cable and Fuse Sizing Chart

Model Number

IT12-1400

IT12-1600

IT12-1800

IT12-2000

IT12-2200S

IT12-2400

IT12-2600

IT12-2800

IT12-3000

IT12-3200

IT12-3600PL

IT24-3500

Cable Size

Distance from battery to inverter in feet

(Length of cable needed is 2 times the distance.)

1/0 12 11 10 9 NR NR NR NR NR NR NR NR

2/0 16 13 12 11 NR NR NR NR NR NR NR NR

3/0 20 16 15 14 14 NR NR NR NR NR NR NR

4/0 20 20 19 18 17 15 14 13 12 11* 10* 11

250MCM 20 20 20 20 20 17 16 16 14 13* 12* 13

Fuse (Bussmann)

Vanner part number

ANN300

04521

ANN400

04523

ANL500

03646

Fuse Holder Vanner part number 03637 (Bussmann 4164)

*For 12 volt models rated-2800 watts and higher use cable rated 90°C, UL listed 4/0 cable 03558, or equal.

Note: A 500 amp fuse is required to achieve full surge output capacity on Model IT24-3500. Usage of the

500 amp fuse dictates using 4/0 cable or larger.

DC Wiring Installation Procedure

1. The DC wiring enclosure is located on the left front of the inverter. The DC cables may enter the

inverter through top, bottom or left side openings (see figures 1,2,and 3). Two cable clamps and four

plastic hole plugs are provided. Bolts are provided for connecting 5/16 diameter ring terminals to the

DC Input Contacts. Optional compression lugs (Vanner part no. D08241) are available for cables

sizes up to 250 MCM.

2. Select a location for the inverter. An ideal location is close to the battery; protected from weather and

moisture; and well ventilated.

3. Select an accessible location for the DC Fuse. The location should be within 18” of the battery and

accessible for visual inspection and replacement. If possible locate so the last DC connection can

safely be made at the fuse.