How to Test a Generator for Output

Generators come in many different sizes, from small residential units to large commercial units. The wattage of the generator is always located on the model number of every manufacturer. A 2,000 watt generator will not put out that much energy through one plug outlet. To check each plug-in's output, check the amperage located on the plug itself and multiply the amperage by the volts. A normal household plug is 110 volts. If the plug is a 10 amp plug, the output is 1,100 watts.

Things You'll Need

• Volt meter

Show More

Instructions

1. • 1

     Place the generator on a hard level surface.

   • 2

     Start the generator. Turn on the volt meter and set it to ohms 20k.

   • 3

     Place the positive lead from the meter into one of the plug receptacle prongs and place the negative lead into the other prong in the same plug receptacle.

   • 4

     Check the meter; it should read 110 volts plus or minus 10 volts. This means the proper voltage is coming out of that plug. Repeat Step 3 for any other plug receptacles found on the generator.