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  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon1.1k+
    Verified electrical services reviews

Verified Reviews for Electrical Service pros in Gwynn Oak, MD

*The Angi rating for Electrical Service companies in Gwynn Oak, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Electrical Service needs.

*The HomeAdvisor rating for Electrical Service companies in Gwynn Oak, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Electrical Service needs.

Last update on October 05, 2026

Find Electricians in Gwynn Oak

K&K Electric
4.9(
36
)
Ceiling Fan - InstallCeiling Fan - RepairElectric Vehicle Charging Station Installation - Materials Not Provided+13 more

Serving Gwynn Oak, MD and surrounding areas

Approved

In business since 2007

Free estimates

Warranties offered

"Kevin, answered my call promptly. Responded to the issue the same day that I called him and he also arrived timely. The defective switch was fixed within 10 mins. and Kevin was on his way. I was so pleased with the service and I will definitely call K&K first, if I have any additional electrical issues."
Response time5 hrs
1 neighbors recently requested a quote
Recommended by87%of homeowners
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Avatar for Clinton Electric Co Inc
Clinton Electric Co Inc
4.6(
175
)
Fixed Generator - InstallElectrical Wiring or Panel UpgradeElectric Vehicle Charging Station Installation - Materials Not Provided+21 more

Serving Gwynn Oak, MD and surrounding areas

Approved

In business since 1969

Emergency services offered

Warranties offered

"My pro from Clinton electric was helpful, professional, and did great work on my electrical projects"
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+2

Response time1 day
Response rate100%
10 neighbors recently requested a quote
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Avatar for J A Electric LLC.
J A Electric LLC.
4.9(
49
)
Electrical Wiring or Panel UpgradeElectric Vehicle Charging Station Installation - Materials Provided by ConsumerCeiling Fan - Install+14 more

Serving Gwynn Oak, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2015

Free estimates

Emergency services offered

"I had issues with 2 lights and circuit breaker in my home and JA Electrical were a godsend. I heard back from them within minutes of placing online quotes in my area. I was able to get a tech, Antonio, out to my home the same day. He worked ho*** ** getting my issue resolved and he succeeded. He's very professional, timely, and I would highly recommend him and the company to anyone having issues."
Additional Photos
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+25

Response time12 hrs
6 neighbors recently requested a quote
Recommended by69%of homeowners
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Avatar for Kolb Electric Inc
Kolb Electric Inc
4.2(
223
)
Electrical Switches, Outlets & Fixtures - Install or RepairElectrical Wiring or Panel UpgradeElectric Vehicle Charging Station Installation+10 more

Serving Gwynn Oak, MD and surrounding areas

Approved

In business since 1925

Free estimates

Emergency services offered

"Great Kolb electrician found the problem and fixed it. Great service"
Response time1 day
Response rate100%
4 neighbors recently requested a quote
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C T Smith Electrical Services, LLC
4.8(
312
)
Electrical Switches, Outlets & Fixtures - Install or RepairElectric Vehicle Charging Station Installation - Materials Not ProvidedElectric Vehicle Charging Station Installation - Materials Provided by Consumer+8 more

Serving Gwynn Oak, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2000

Free estimates

Warranties offered

"Had an EVSE station installed. The work was done very quickly and looks fantastic. Would highly recommend for any electrical work."
Response time2 days
Response rate92%
14 neighbors recently requested a quote
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Avatar for Jefferson Electric Co.
Jefferson Electric Co.
5.0(
32
)
Electric Vehicle Charging Station Installation - Materials Provided by ConsumerExterior Building Lighting - Install or Replace - For BusinessExterior Building Lighting - Repair - For Business

Serving Gwynn Oak, MD and surrounding areas

Approved

In business since 2012

Free estimates

Credit card accepted

"Craig was professional and completed the work as we discussed. I would recommend him for electrical projects."
100 amp sub
Sub panel 100 amp
rough in
rough in
rough in

+6

Response time1 day
1 neighbors recently requested a quote
Recommended by96%of homeowners
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Avatar for Wolf Electric LLC
Wolf Electric LLC
5.0(
120
)
Electrical Wiring or Panel UpgradeElectric Vehicle Charging Station Installation - Materials Not ProvidedElectrical Switches, Outlets & Fixtures - Install or Repair+1 more

Serving Gwynn Oak, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Credit card accepted

"Alex was friendly, quick, and very professional. He was able to take care of my problem within 24 hours. I'll definitely be calling Wolf Electric, LLC. for my electrical needs in the future."
Response time6 hrs
Response rate97%
4 neighbors recently requested a quote
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Avatar for Paradise Construction
Paradise Construction
4.4(
191
)
Electrical Wiring or Panel Upgrade

Serving Gwynn Oak, MD and surrounding areas

Approved

In business since 2003

Free estimates

Credit card accepted

Paradise Construction is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business

Project Photos
3 neighbors recently requested a quote
Recommended by82%of homeowners
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Avatar for Raising the Bar Electric
Raising the Bar Electric
4.9(
20
)
Electrical Switches, Outlets & Fixtures - Install or RepairElectric Vehicle Charging Station Installation - Materials Not ProvidedElectrical Wiring or Panel Upgrade+11 more

Serving Gwynn Oak, MD and surrounding areas

Approved

In business since 2021

Free estimates

Warranties offered

"Thank you so much Bryan, Excellent service from initial phone call to book an appointment to end of service. Very professional, efficient, friendly and thorough. Would highly recommend "Raising The Bar Electric "! Bryan does amazing work and takes pride in his work! Extremely happy and will definitely use this service for future needs!"
Response time1 day
4 neighbors recently requested a quote
Recommended by80%of homeowners
Request Quote
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Electrical questions, answered by experts

Single-pole switches are simple circuits designed for lower voltages. As such, they don’t require the complex wiring of switches that need to supply power to larger devices and appliances. This is why single-pole switches commonly go in bathrooms, closets, and other small rooms that power a low-watt light fixture. One wire creates the circuit from the power supply, the other goes to the fixture, and the final wire provides safety mechanisms through grounding.

Grounded electrical outlets are usually three-pronged. You can also look for a grounding clip in your outlet boxes or use a circuit tester. If you’re unsure, consult a suitably qualified electrician regarding your home's electrical safety.

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.

An estimate for electrical work should include an estimated number and an estimated price to complete the work. An electrical estimate should also include a description of the services to be provided as well as the materials to be used, such as wiring, switches, panels, or other items, and the cost for those materials. If any tax is charged, that should appear on the estimate, too. Some estimates may include additional options that can be added to the base price of the quoted job if the customer chooses to go ahead with the add-ons.

Yes, you can get shocked while using a multimeter if:

  • You touch the metal tip while testing a live current.

  • The meter isn’t properly rated for the voltage.

  • The meter picks up on transient voltage that’s above the range you’ve set.

  • The meter has defective parts.

You can prevent shock and personal injury by using a multimeter properly and maintaining your device. 

If you’re unsure how to use a multimeter or want help with your project, contact a local electrician to get the job done.

The Gwynn Oak, MD homeowners’ guide to electrical services

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

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