Cobra CPI 2575 Operations Instructions download pdf (Page 7)

Nothing Comes Close to a Cobra

™

Connecting Cables (not included)

•

Power wire and wiring are very important to the

performance of the inverter. Because the inverter has a

low voltage, high current input, low resistance wiring is

essential between the battery and inverter. This is so it

can deliver the maximum amount of energy to the load.

Use only copper wire. Aluminum wire has about one-third

more resistance than copper wire of the same size, plus it

is difficult to make good, low-resistance connections to

aluminum wire.

We recommend #4 AWG copper cable (90°C insulation

rating) as the minimum size for connections between

the battery and inverter.

Keep the cable length as short as possible, no more

than four feet (one and a half meters). This will keep the

voltage drop to a minimum.

If the cable has too much voltage drop, the inverter may

shut down when drawing higher currents because voltage

at the inverter may drop below 10 volts. If you must use

longer cables, choose thicker cables, such as #2 AWG,

and trim the ends of the cable to fit the terminals.

To connect the cables between the

inverter and the battery:

1. Press the Power Button on the inverter to the off

position. If the power source is a DC power supply,

switch it off as well.

2. On the end of the cable that connects to the inverter,

strip back the insulation about one-half inch (one and

one-half cm), exposing the bare copper conductor.

3. Connect cable to the Power Input Terminals on input

end of the inverter. The red terminal is positive (+) and

the black terminal is negative (-). Insert the bare ends

of the cables into the terminals and tighten the screws

to clamp the wires securely.

It is a good idea to check and tighten these screws

from time to time. They can become loose by

vibrations or thermal cycling.

4. Connect cables to the power source:

a. Connect the cable from the Negative (Black)

Terminal of inverter to the Negative Terminal

of the power source. Make a secure connection.

Connecting Cables Connecting Cables

Intro Operation Customer

Assistance

Warranty

otes

Notice

Secondary Icons

Caution Warning

Installation

Intro Operation Customer

Assistance

Warranty

otes

Notice

Secondary Icons

Caution Warning

Installation

Insert Bare Cables

Power Button

Intro Operation Customer

Assistance

Warranty

Notes

Notice

ain Icons

Secondary Icons

Caution Warning

Installation

Strip the Insulation

10276_CPI2575_PH1 8/20/07 2:33 PM Page 8

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Cobra CPI 2575 Operations Instructions Page 7

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