If you’re uncertain about performing a test or detect anything unusual, contact an electrician for help. If these letters donât show up on your multimeter, check â¦ Support wikiHow by Test for a potential open circuit by using one multimeter lead to touch one of the prongs on the AC side of power cord. Just touch one of the probes to the second prong on the plug and repeat the steps above to test for a short or broken wire. Also, make sure the testing device is active. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. The grounding pin is an important safety feature. Unlock expert answers by supporting wikiHow, https://www.sciencebuddies.org/science-fair-projects/references/how-to-use-a-multimeter, https://www.bobvila.com/articles/how-to-use-a-multimeter/, https://sciencing.com/use-centech-digital-multimeter-6101228.html, https://testmeterpro.com/how-to-use-a-multimeter-to-test-a-car-battery/, https://cie-wc.edu/AnalogMultimeter_MeasuringDCVoltage_10-18.pdf, http://www.masonmonitoring.com/pdf/support/UsingMultimeter.pdf, https://www.familyhandyman.com/electrical/how-to-use-a-multimeter/, Please consider supporting our work with a contribution to wikiHow. The mAVΩ port is meant for currents rated at 200 milliamps (mA). Put spare cord aside as you will not need it for this test. Turn on your multimeter and turn the dial to the VDC (Volts DC) setting. It should read â00â or show a very low reading if continuity is present. To test an outlet for power, turn off the power to the circuit at the circuit breaker. Push the short, thick connector (called a âbanana plugâ) of â¦ Transformers change the voltage of your system to suit your electronics. Never touch these parts with your fingers or uninsulated metal tools unless the supply is unplugged from the wall. Don’t worry! This image may not be used by other entities without the express written consent of wikiHow, Inc.
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