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Use a voltmeter to measure the voltage of a wall receptacle.

1. First, select the voltage type on the meter. To measure the voltage of a battery, select DCV. Since we are measuring voltage in a building, select ACV. (AC is represented by a small wavy line, and DC is represented by straight lines.)
2. Your meter may have a voltage range setting. If so, select the range of volts that is the next higher range than you expect to measure. (i.e., to test 120 volts, set the meter to 200 volts.)
3. The meter has two test probes. Plug the red probe into the positive connection and the black probe into the negative connection on the meter. Touch the probes together. The meter should read 0 volts.
4. Hold the probes by the insulated handles. Do not touch the bare metal probes, or you could get shocked. Do not use a meter that has cracked insulation on the handles of the probes.
5. Place the voltmeter probes into the two rectangular slots in the wall outlet. This will give you the voltage reading of that outlet.

We have produced a video of the multimeter. Watch the video here.

Written by :

ahoward

 

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