How to Hardwire a Power Inverter to a Battery

By Joe Murray

Power inverters convert 12-volt, direct-current to 110-120 volt, alternating-current. They are generally used in automotive and marine applications to power appliances, computers, TVs and similar 120 AC devices. Power inverters come in a wide selection of wattage, from 100 to more than 1000 watts. Hard wiring a power inverter to the vehicle or source battery is recommended for wattage over 350.

Step 1

Measure the distance from the battery to the chosen location of the power inverter. The distance should be as short as possible.

Step 2

Mount the fuse holder between the battery and the power inverter location. Situate the fuse holder as far from any heat source as possible, without compromising the length of the wire.

Step 3

Run the wire from the battery location to the fuse and from the fuse to the power inverter location. Secure the wire with wire ties and electrical tape to whatever permanent medium is in the installation location.

Step 4

Mount the power inverter making certain all grounding instructions accompanying the unit are followed.

Mount the power inverter, making certain all grounding instructions accompanying the unit are followed.

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