How to use a multimeter to test voltage?

A multimeter is a measurement tool to calculate the electrical values like the voltage, current, and resistance of an electrical component. A professional electrician must carry this essential tool on their toolbox. It’ll be better to call the multimeter a digital multimeter in this decades.

A digital multimeter is including all the functions to measure the accuracy of the electrical values. There are a lot of DMM to choose to work. But, if you asked me which is the better!

I myself probably recommend you to choose the Fluke multimer to test voltage from my experience. Although you’re the most beginners in this job, it’s really easy to calculate and understand the function to work. The professional and expert also have suggested choosing Fluke multimeter as their favorite one.

In this article, here aren’t only highlighting the process of testing voltage; all the necessary information have trying to input for better help to fresher one on this project.

How to use a multimeter to test voltage: fluke multimeter

Before starting the job, it’s necessary to know about the tool’s functions and know how it works. As this requirement, let’s introduce you to the fluke multimeter!

Fluke mutimeter

Fluke is designed with good function to calculate the multiple values in a single multimeter tool. Here one can use a fluke multimeter to test voltage in the easiest and short method. Before that, the basic functionality needs to learn about this tool.

Taking the fluke multimeter, you’ll first see the display screen function on top of the meter. Here, you can check the calculation like the quantity of the result.

Secondly, below the display, you can see various buttons to choose a specific value or symbol.

After that, a rotary switch is used to choose any primary measurement values such as voltage, ampere, ohm.

You will find out input jacks where you have to connect leads prob of an experiment component at the bottom. Test leads are inserted as well with insulated wire in this section.

It’s now easy to determine fluke multimeter uses up next for the working process as you have already recognized the function.

What voltage to test? AC or DC?

As we’re very known about only the voltage, but in this case, you have must know about the basics of AC or DC voltage! Don’t have? Then read this section for a better concept!

The difference between AC & DC:

AC stands for Alternative current, which changes its direction respectively over time.

On the other hand, DC stands for the direct current, which flows only in one direction. For that direction of flow, voltage is also reversed periodically.

Most of the electrician widely use DC in the circuit board or conductor as DC provides constant voltage. It also seems AC voltage is also required for a house, building, or apartment to transmit the current flow over a long distance.

How to use a multimeter to test AC voltage: Step by step

Step-1: Prepare your multimeter

Finding the value result accurately, Preparing and inspecting the measuring tool’s component is also one of the basic steps to be done.

First, check your fluke multimeter carefully there is any crack, scratch, or any other damage. After that, check the lead status again and again. Verified it by setting the multimeter to resistance mode.

One short task is a need in these steps. You have to connect the parts with a device and then tap the tips of the leads. Here, 0.5 ohm is the result of all the right conditions to start the project. It can be less than 0.5 as well.

Step-2: Turn off the switch

Firstly, you should turn off all the connected switches of circuits and plug points.

Note: It must have to do carefully to prevent an unfortunate accident, voltage shock, and circuit breakers.

Step 3: Turn on the multimeter

Now, please turn on the multimeter and set it in a higher energy range. Turn the dial to v^~.

Note: Use the dial or rotary switch to set. Sometimes, it happens that your multimeter set on the auto range. As far you know, check it out. If this occurs, then your calculation will not be accurate in this process.

Step 4: Insert the lead

Here, you have to need to connect the two leads prob into the jack point. First, you have to connect the black colour leads prob to the jack COM.  Then, connect the red colour lead prob into the jack point denoted as V(omega)

Step 5: Set multimeter with a circuit

In this step, you need to set the multimeter with a circuit in a parallel way. Now, wait for the measurement of the voltage.

Note:  Here, connect the two tests investigate among load or energy source. If you have to test another point, then join it with power or load energy.

Step 6: Connect the leads

You have to connect the black point with the first end of the power source. Next, connect the red one on the following point of the check.

Note:  Don’t jump towards the end of the check. Make sure of the adjoining cabling or PCB terminal as well.

Step-7: Read the display

Hold on to the main button to choose a specific measurement value range. Push on a hold button to confine steady measurement.

To get the highest or lowest value, you need to push the Max/Min value of DMM. Now type REL to show specific position value. Next, collect the measurement, which shows on your display screen instantly.

How to use a multimeter to test DC voltage: Step by step

Step 1: Turn on the multimeter

First, turn on the multimeter and choose dial or rotary switch to dc voltage for a higher range.

Note:  Sometimes, you can also see dc millivolts on your multimeter as your models’ function. Choose millivolts or either set dial to DC.

Step 2: Insert the leads

As AC voltage, you need to do the same lead connection to the jack. Exactly, first, connect the black leads probe into the COM jack. Then, connect the read leads probe into V (ohm) jack.

 Step 3: Set multimeter with a circuit

In this step, set the multimeter with the circuit in with a test probe. You need to connect the black test probe with a negative polarity point and the red test probe with a positive polarity point.  You can now read the measurement.

Step 4: Selecting specific measurement

If your multimeter on the auto range, then select the specific measurement, choose the Range button for the fixed range selection.

Note:  If it falls within a low voltage, first disconnect the test probe. After that, set the dial to dc millivolts, and then reconnect the test probe. Now press the Hold button to select the fixed measurement.

Step 5: Read the measurement

Choose higher or lower range by press Max or Min Button. The multimeter will show multiple new records. Now, select the REL button and select the specific value that will show on a display screen.  Read the final value, and also, you can note that measurement.

Frequently Asked Question (FAQ): how to use multimeter

Question 1:  How do you check if a wire is live with a multimeter?

Check the live wire with the voltage range in your multimeter.  If the multimeter shows under 110-120 voltage range on display, then the live wire confirmation.

If the result shows 0, then your multimeter isn’t working properly, or the connection between the probes isn’t loosened or damaged.

Question 2: Why are Fluke Multimeters so expensive?

If you need the best service, you’ve to pay enough. Fluke multimeter is seemed expensive in the market, but there is also a reason. Fluke multimeter is well designed with special features.

It also works with high voltage and multiple functions, which can easily impress the professional one for their job. Also, the easy method for working test, it’s the best choice for fresher also.

Question 3: What is the REL function of the multimeter?

In fluke multimeter, you can have to understand the function REL for use. Here, REL is the store’s existing reading (a delta) and rests display to zero. Sets a relative reference point to measure against the next reading.

Question 4: What does COM mean on a multimeter?

The COM jack stands for Common in the multimeter function, whereas the black probe always connects through it. There is no distinction between red or black probe more than colour. But, normally black lead probe is connected through the COM jack.

Question 5: What does DCV stand for on a multimeter?

DCV stands for Direct current voltage, which is used for direct current measurement in the multimeter. V^ ~ denotes it.


Use a multimeter to test voltage isn’t a big deal. If there’s a fluke multimeter, then no worries! Although the testing process isn’t so complicated, you also need to take safety precautions.

The multimeter can give you a short voltage for easy mistakes, so you just need to safe and careful about this.

And there’s also have to connect the leads, test probes correctly for accurate results. If you aren’t able to fix those, let’s call an expert. Don’t waste your valuable time.

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