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TRUSTED BY GWYNN OAK, MD HOMEOWNERS

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

Top-Rated Electricians in Gwynn Oak - Updated Nov 2026

Avatar for J A Electric LLC.
J A Electric LLC.
4.9(
54
)
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."
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+25

Response time12 hrs
6 neighbors recently requested a quote
Recommended by62%of homeowners
K&K Electric
4.9(
36
)
Electrical Switches, Outlets & Fixtures - Install or RepairCeiling Fan - InstallCeiling Fan - Repair+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
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

"The service was stellar from the start. I contacted C. T. Smith Electrical and everything from explaining what I needed to the actual work being done was managed professionally. I provided pictures as well as the electricians came out to assess. The price was very fair for the jobs requested and even when there were some issues that required additional work, the additional cost was fair. They have no way of knowing what is behind the scenes until the start the work and I completely appreciated their assessment and the options available to complete the job. I am so happy with outcome. I will definitely recommend! Thanks C. T. Smith Electrical."
Response time2 days
Response rate92%
12 neighbors recently requested a quote
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 SO wonderful! He was warm, friendly, professional, and was a true expert. He worked quickly and communicated well. He make sure I was well take care of and I could trust him completely. I will enthusiastically use and recommend him anytime there are electrical needs. No need to shop around more- just call Craig!"
100 amp sub
Sub panel 100 amp
rough in
rough in
rough in

+6

Response time1 day
Recommended by96%of homeowners
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Electrical FAQs, answered by experts

It prevents electrical surges, protects your home from things like electrical fires, and prevents you from getting shocked if an errant surge runs through your power line. Without grounded wires, your appliances could also get damaged during lightning storms.

On average, the cost to wire a new home ranges from $2 to $5 per square foot. The cost to rewire a house is around the same, ranging from $2 to $4 per square foot. Often, though, new wiring comes with lower overall costs since it’s much easier to access a home’s foundation. 

In most cases, line wires are located at the bottom of a panel or device, while load wires are located at the top. Line wires are generally black, while load wires are typically red or black. To tell for sure, you can use a multimeter or volt pen to test the wire. A live or line wire will always carry a charge, while a load wire will only carry a charge when it’s in use.

Generally, you’ll want to keep between 60 and 70 feet between the generator and the transfer switch. There are a few reasons for this, including:

  • The distance reduces the noise coming from the generator into your home.

  • It increases efficiency because you won’t have a voltage drop from this short of a distance.

  • Prevents carbon monoxide poisoning: keep at least 15 feet between your generator and an open window. 

Flickering lights, warm outlets, or tripped circuits needing immediate attention mean systems likely risk hazard scare.

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.