24 Hour Emergency Electrical Service

24 Hour Electrician in Houston and All Nearby Cities  


  Feb 11 2022

How to Test AC Voltage

We have electricity running all around of us, especially in the 21st century, but not many people understand how electricity works let alone how to test electrical systems. Fortunately, you do not have to be an electrician for some of these simple tests. In this short article, we will review how to test AC voltage. If you find the work is better left to an experienced electrician, then call Mr. Electric of Houston. We serve Houston and the surrounding areas with quick and reliable electrical repair service. With that said, let’s get started on testing some voltage.

What is Voltage?

Before we get to testing the voltage, we want to make sure everyone is on the same page. Let’s start with the basics. What is voltage? Voltage is the measurement of the pressure from an electrical circuit’s power source. So, when you think voltage, you can think of the water pressure in a hose. The higher the voltage, the higher the pressure from the electrical circuit’s power source.

Voltage can be either alternating current (AC) voltage or direct current (DC) voltage. DC voltage flows in a straight, one-way line. You will find DC commonly used in batteries and battery-powered equipment. AC voltage flows in waves and reverses direction at regular intervals. Generators and utilities deliver AC voltage. In this article, we will be testing AC voltage.

Why Testing Voltage is Useful

Electricity is delivered through circuits to loads—electronic devices, appliances, machines, etc. Each load has electrical reference values usually on a nameplate. These indicate voltage, wattage, and so forth. These numbers tell a technician or electrician what readings to expect when the load is performing normally. Testing the voltage will objectively identify deviations from these norms.

Let’s Test the AC Voltage!

To accurately test the AC voltage, you will need a multimeter. This is an essential tool to keep on hand. The multimeter is used to measure multiple electrical properties including voltage. Here’s how to start testing:

  • Grab your multimeter and turn it on into the AC voltage mode.
  • Bring the voltage setting up to or higher than the voltage of the appliance. You can even turn it to the maximum setting to be safe.
  • Attach the multimeter’s black probe into the slot labeled "COM" or common; the red probe into the other slot usually marked with a "V."
  • Place the other end of the black probe against one side of the appliance and the red probe on the opposite side.
  • Make sure the circuits are not tripped and the power is on. You should see the results!
  • Finally, remove the probes and turn off the multimeter.

Hire an Electrician

Testing voltage is easy, but actual electrical work is best left to trained professionals. If you are looking for an electrician, then you are welcomed to call Mr. Electric of Houston. We are proud to serve Houston and the surrounding areas with quick, affordable, and reliable electrical service and electrical repair. Our live representatives are always happy to take your call.

  • Energy Saving Through Smart Home Systems

    Who would have thought that upgrading your home’s electrical system and appliances or devices could save you money? Well, probably many people who know about smart technology.

  • How to Tell What Appliances Are Using the Most Electricity?

    Certain inventions make our lives easier. One of these inventions was electricity. However, we know that every good thing comes with a price. This is a financial price for many people. High electricity usage and unstrategic usage reflect on the electricity bill negatively.

  • Electrical Outlet Replacement in Spring, TX

    If you’re in need of electrical outlet replacement in Spring, TX, you’ve come to the right place. At Mr. Electric, we take pride in providing reliable electrical outlet installation, electrical outlet repair, and electrical outlet replacement in Spring and the nearby areas.

  • Top 10 Electrical Code Violations

    Electrical code violations are something that many faces without knowing such things exist. If you leave a job regarding electricity to an electrician, this doesn’t mean that their service is up to code.

Mr. Electric Of Katy
Rated 4.6 out of 5 based on 23 ratings and reviews.

  • Circuit Installation

    $100 Off

    Get $100 Off Your Circuit Installation. Redeem now to save more.

    Coupons must be presented at time of service. Limit one. Not valid with any other offer.

  • 5% OFF

    5% Off

    Electrical Repair Services - For First Time Customers

    Coupons must be presented at time of service. Limit one. Not valid with any other offer.

  • New Electric Panel Installs

    $200 Off

    Get $200 Off Your Electrical Panel Installation Service

    Coupons must be presented at time of service. Limit one. Not valid with any other offer.

  • Free Energy Audit


    Energey Evaluation - $149 Value - Call now to schedule.

    Coupons must be presented at time of service. Limit one. Not valid with any other offer.

Local Electricians


  • Enter Security Code: 123

Great Reasons to Work With Mr. Electric Of Katy
  • Electrician Houston
    Upfront, Flat Rate Pricing
  • Electrician Katy
    Insured & Licensed Electrician
  • Electrician The Woodlands
    Flexible Appointment Times
  • Electrician Cypress
    Courteous, Uniformed Electricians
  • Electrician Tomball
    Free In-House Quote
  • Electrician Katy
    Workmanship & Parts Guaranteed
  • Electrician Spring
    Certified Local Electricians



Schedule Electrical Repair Services

24 Hour Electrical Repair Services in Houston, Katy, TX and all nearby cities.
Special Savings

5% Off

Electrical Repair Service
All Rights Reserved © 2023    Atlanta Website Design