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You are here: Home > Power Inverters

Power Voltage Inverters

Power inverters are used to change DC power from a battery into AC power that you can use to operate different kinds of electrical devices such as, electric lights, kitchen appliances, microwaves, power tools, TVs, radios, computers, etc. All you have to do is connect the inverter to a battery, and plug your AC devices into the inverter. Run AC tools and appliances in vehicle!  Convert DC to AC
An inverter is an electrical or electro-mechanical device that converts direct current (DC) to alternating current (AC); the resulting AC can be at any required voltage and frequency with the use of appropriate transformers, switching, and control circuits.
 

Helpful formulas to determine right Power Inverter for you:

To Convert AMPS to WATTS:

Multiply: AMPS X 120 (AC voltage) = WATTS 
This formula yields a close approximation of the continuous load of the appliance

To calculate approximate Startup Load:

Multiply: WATTS X 2 = Starting Load 
This formula yields a close approximation of the starting load of the appliance, though some may require an even greater starting load. NOTE: Induction motors such as air conditioners, refrigerators, freezers and pumps may have a start up surge of 3 to 7 times the continuous rating.

Most often the start up load of the appliance or power tool determines whether an inverter has the capability to power it.

For example, you have a freezer with a continuous load of 4 amps, and a start up load of 12 amps:

4 amps x 120 volts = 480 watts continuous 
12 amps x 120 volts = 1440 watts starting load

You would need an inverter with peak-surge rating greater than 1440 watts.

FORMULA to convert AC Watts to DC Amps:

AC Watts divided by 12 x 1.1 = DC Amps
(this is the size vehicle alternator you would need to keep up with a specific load; for example, to keep up with a continuous draw of 1000 watts, you would need a 91 amp alternator)