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TRUSTED BY ROCKVILLE, VA HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon940
    Verified electrical services reviews

Find Electricians in Rockville

Avatar for J & M Electrical Services
J & M Electrical Services
4.9(
53
)

Serving Rockville, VA and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

"J&M Electrical did an outstanding job of installing a home backup generator. When the gentleman came out to do the onsite inspection and provide me with the results and options, it was a no pressure sales approach. He walked me through the entire process that was used to determine what size generator I would require in the event of a power failure. When he had left the house that evening it was not with an ultimatum of “You must let us know right away, or in the next 72 hours” type approach. In this case it was more along the lines of “Think it over and we are glad to have been able to present our product” Once we decided to have the generator installed the communication from the front office in regards to what was required from me and what the contractor would provide was excellent. Scheduling was easy and all that was discussed was provided on time and with no exceptions. The work crew was on time and cleaned up upon completion of the installation. Overall an outstanding experience and I would recommend them to anybody looking to have a backup home generator installed."
Additional Photos
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Additional Photos

+1

Response time1 day
Response rate100%
3 neighbors recently requested a quote
Avatar for Ahmad Electrical Service
Ahmad Electrical Service
5.0(
61
)

Serving Rockville, VA and surrounding areas

Approved

Super Service Award Winner

In business since 2015

Emergency services offered

Warranties offered

"I was truly impressed with the speed and precision of the work completed by Ahmad Electrical Services. The quality is exceptional, and I highly recommend Ahmad Electrical Services to anyone in need of electrical work."
Electrical Project
Electrical Project
Additional Photos
Additional Photos
Additional Photos

+20

Response time1 day
Response rate100%
16 neighbors recently requested a quote
Avatar for Your Electrical Solution LLC
Your Electrical Solution LLC
5.0(
34
)

Serving Rockville, VA and surrounding areas

Approved

Super Service Award Winner

In business since 2005

Free estimates

Warranties offered

"After a lightning surge caused electrical issues in our house, Your Electric Solutions scheduled us much faster than other companies. Bill was fantastic! He troubleshot the issues, installed a surge protector, inspected our outlets, and replaced damaged ones. His work was neat, his prices were very reasonable compared to competitors, and he patiently answered every single question without making me feel silly. Highly professional. I’ll definitely hire them again!"
balcony lighting
Kitchen Remodel
Chandelier
Response time4 hrs
Response rate94%
5 neighbors recently requested a quote
Avatar for Tolliver Electrical LLC
Tolliver Electrical LLC
5.0(
22
)

Serving Rockville, VA and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Offers commercial services

"Tolliver Electrical did a commercial job for me at Fleetpride. (a heavy duty truck parts store) The company did an excellent job in completing the electrical work before the staff reported back to work the following morning. Tolliver Electrical is the only electrical company that I call on for all my electrical needs"
Panel change
Chandelier
Living room
Lights
Response time2 days
Response rate91%
2 neighbors recently requested a quote
Avatar for SD Electrical services
SD Electrical services
4.6(
39
)

Serving Rockville, VA and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

"Work was done in an efficient time manner. He was very nice. This was the first time I used Angi and if I need an electrician again I will hire SD Electrical."
Project Photos
Electrical Project
Generator Project
Additional Photos
Additional Photos

+6

10 neighbors recently requested a quote
Recommended by62%of homeowners
Avatar for Rodworks, LLC
Rodworks, LLC
5.0(
12
)

Serving Rockville, VA and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Gabe was super responsive, organized, professional, did excellent work and far exceeded my expectations. I will gladly recommend his services to others"
Response time4 hrs
2 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Virginia Power Solutions
Virginia Power Solutions
4.7(
78
)

Serving Rockville, VA and surrounding areas

Approved

In business since 2003

Free estimates

Credit card accepted

"They were hired to replace a part on our generator. This was done in a timely manner and it kicked on reliably the following week when power went out."
Our Great Team!
Generator Service
Generator Sales
Generator Installs
Generac 26kW

+2

Response time1 day
85 neighbors recently requested a quote
Recommended by94%of homeowners
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Electrical questions, answered by experts

The standard voltage for United States power outlets isn’t shared around the world, and neither is the shape of the power connector. This is why you need travel adapters when spending time abroad. Where the United States typically uses 110/120V outlets, outlets in Europe typically use 220/240V. Power outlets can vary in other ways around the world, too. Not everyone uses the 60Hz frequency, for example, and not everyone even uses AC power in outlets. Always do your research when traveling to see what you need.

It’s possible to distinguish a positive black wire from a negative black wire if you know what type of circuit the wires are in. If it’s an alternating current (AC), then black wires are positive. If it’s a direct current (DC), then black wires are negative. 

Sometimes, a circuit has two black wires. In that case, the positive black wire will be solid black while the negative black wire will have a white stripe on it. If you’re still unsure, you can use a multimeter to check.

A GFCI outlet is a type of electrical outlet that monitors the electricity flowing through the circuit and shuts off power immediately when it detects a loss or acceleration of current. They are particularly important in areas that may come in contact with water, which is why they're most common in kitchens, bathrooms, laundry rooms, and garages.

Whole-house generators can run continuously for extended periods, even for weeks at a time (around 400 to 500 hours), as long as they have a sufficient fuel supply. However, this type of extensive use will increase wear and tear and can shorten the generator's overall lifespan. During long periods of operation, it's important to check and refill the engine oil as needed, potentially as frequently as daily depending on the model. If your generator uses a fuel tank, ensure it is kept full to prevent unexpected shutdowns.

Whether or not a pool needs a dedicated circuit depends on the electrical needs of the motor, lights, and pump. Keep in mind that pool motors can use a lot of electricity. A dedicated circuit can prevent the breaker from tripping whenever you use the pool. A small motor for an equally small pool may only need a GFCI outlet. It’s best to plug it directly into the outlet rather than using an extension cord. You should also consult an electrician to ensure your pool’s electrical system is in accordance with local regulations.

The Rockville, VA homeowners’ guide to electrical services

From average costs to expert advice, get all the answers you need to get your job done.