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TRUSTED BY KNOXVILLE, MD HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon182
    Verified electrical services reviews

Find Electricians in Knoxville

Avatar for Mark H. Anderson Electrical Services, Inc.
Mark H. Anderson Electrical Services, Inc.
4.4(
418
)
Electrical Wiring or Panel UpgradeElectrical Wiring or Panel Upgrade - For BusinessElectrical for Addition or Remodel - Install - For Business

Serving Knoxville, MD and surrounding areas

Approved

In business since 1990

Free estimates

Warranties offered

"Lowest price among multiple quotes and significantly more attention to detail and the least visible and least intrusive installation of new wiring from the existing panel. Would definitely recommend and use Mark H. Anderson Electrical Services again!"
Best of 2015
Response time9 hrs
4 neighbors recently requested a quote
Recommended by94%of homeowners
Sidike
5.0(
11
)
Electrical Wiring or Panel UpgradeElectric Vehicle Charging Station InstallationElectric Vehicle Charging Station Installation - For Business+10 more

Serving Knoxville, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Warranties offered

Customers say: True professional

"Sidike was very thorough, professional and timely. He is a licensed electrician and took time to solve a tricky electrical problem. I would recommend sidike for your residential electrical needs!"
Electrical Project
Response time11 hrs
Response rate100%
1 neighbors recently requested a quote
Long Electric, LLC
4.9(
168
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Knoxville, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2010

Free estimates

Customers say: Quality work

"From start to finish, Long Electric had our backs. We didn't have to hire sub-contractors or to obtain permits -- Long Electric took care of everything. Our go-to person in the main office, Melissa, answered all of our questions and kept us apprised of everything we needed to know. Everyone we had contact with throughout the installation project treated us with the utmost in professionalism. Not only will I call upon them for future electrical needs, I have referred Long Electric to a friend who is also interested in a whole house generator."
Response time2 days
8 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Electrical Connections, LLC
Electrical Connections, LLC
4.3(
43
)
Electric Vehicle Charging Station Installation - Materials Provided by ConsumerElectrical Switches, Outlets & Fixtures - Install or RepairElectrical Wiring or Panel Upgrade+7 more

Serving Knoxville, MD and surrounding areas

Approved

In business since 1989

Emergency services offered

Warranties offered

"I had a wonderful experience with Electrical Connections. My project ended up being much larger than I anticipated it would be and they were excellent at explaining everything and helping me understand what needed to be done. Customer service was top notch and clearly a priority for everyone I talked to from the scheduler to the owner of the company. Brian was excellent and stayed until the job was done even though it made an extra long day for him. Highly recommended!"
Electrical connections
Electrical connections
Electrical connections
Electrical connections
Electrical connections

+42

Response time4 hrs
Response rate93%
8 neighbors recently requested a quote
Avatar for Lou Electrical Contracting, LLC
Lou Electrical Contracting, LLC
4.5(
36
)
Electrical Switches, Outlets & Fixtures - Install or RepairElectrical Wiring or Panel Upgrade

Serving Knoxville, MD and surrounding areas

Approved

In business since 2006

Free estimates

Offers commercial services

"We had five different things for Lou to fix, including a chandelier that needed to be lowered and made level. Lou rounded the oval links in the chain that held the chandelier and that made it level for the first time! He figured out why a ceiling fan was making noise and why another one wasn’t working at all. He also replaced part of our electric panel which had somehow gotten water inside and was corroded. We didn’t have the right part to change lights in our Faber stove hood, but Lou did, and quickly replaced them for us. We were really pleased with how knowledgeable and competent our electrician was and plan to call him again if we have any more electrical problems."
18 neighbors recently requested a quote
Recommended by81%of homeowners
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Showing 1-10 of 374
Electrical questions, answered by experts

No, not all thermostats require a C-wire. Older manual and programmable thermostats typically do not need one. While many smart thermostats do require a C-wire to function correctly, some models can operate without one, often at the expense of certain features. A C-wire provides a constant source of power, which enables the thermostat to stay connected to Wi-Fi and keep its display screen lit on-demand. If you are upgrading from an older thermostat to a smart model that requires a C-wire, you may need to install one first for it to work as intended.

The American Wire Gauge system calculates wire size diameters using the complicated formula D(AWG)=.005·92((36-AWG)/39) inch. A simpler rule of thumb is that every six-gauge decrease doubles the wire diameter, and every three-gauge decrease doubles the wire’s cross-sectional area. On the other hand, wavenumbers are typically measured in reciprocal meters (1/m or m−1) or reciprocal centimeters (1/cm or cm−1).

Yes, the National Electric Code (NEC) requires at least one GFCI outlet in each sectioned-off portion of an unfinished basement, partly to ensure a power source is available for a sump pump in case of flooding. If you install multiple outlets in your unfinished basement, all of them must be GFCI-protected. For finished basements, standard outlets are generally permitted, but at least one GFCI outlet is still required per circuit. Keep in mind that local municipalities may have additional codes, so it's best to consult a licensed electrician to ensure your home is fully compliant.

A 10,000-watt generator can run a small to mid-sized central AC unit (typically up to 3 tons or 36,000 BTU) along with a few other appliances. However, larger AC units or additional loads will require a bigger generator. Consult a local generator installer to ensure you add the correct size generator to your home.

Old electrical systems may have more problems than newer ones. In some cases, like if your home has aluminum wiring, it may be necessary to update your electrical system. You should also update your home’s wiring if it still has knob and tube wiring, which is considered dangerous by modern building standards. If that applies to you, get in touch with an electrical professional near you to obtain a quote.

The Knoxville, MD homeowners’ guide to electrical services

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