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TRUSTED BY JOHNSTON, SC HOMEOWNERS

  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon70
    Verified electrical services reviews

Top-Rated Electricians in Johnston - Updated Nov 2026

Avatar for B Electric
B Electric
4.8(
38
)
Electrical Switches, Outlets & Fixtures - Install or RepairElectrical Wiring or Panel UpgradeElectrical Wiring or Panel Upgrade - For Business+10 more

Serving Johnston, SC and surrounding areas

Approved

In business since 1997

Free estimates

Emergency services offered

"This was the second job done by B Electric. They got back to me in a reasonable amount of time, showed up promptly, did a great job, and cleaned up. Very reasonable and always courteous and friendly. I consider them my only electrical contractor."
Response time2 days
Response rate100%
3 neighbors recently requested a quote
Avatar for B & Z Electrical Service
B & Z Electrical Service
5.0(
8
)
Ceiling Fan - RepairElectric Vehicle Charging Station Installation - For Business - Materials Not ProvidedElectric Vehicle Charging Station Installation - For Business - Materials Provided by Consumer+10 more

Serving Johnston, SC and surrounding areas

Approved

In business since 1994

Free estimates

Small jobs welcome

"Barry is a legendary professional. He can solve even the most puzzling electrical wiring mysteries. Also, he is very respectful of the home and always uses booties on his shoes and cleans up after he’s done working. Definitely one of the most solid vendors I’ve worked with during my two years of hiring vendors for Aiken remodels."
I can work on anythng!
Response time10 hrs
Response rate100%
T3 Electrical
5.0(
69
)
Electrical Wiring or Panel UpgradeElectric Vehicle Charging Station InstallationElectric Vehicle Charging Station Installation - For Business+10 more

Serving Johnston, SC and surrounding areas

Approved

Super Service Award Winner

Emergency services offered

Customers say: True professional

"Everything went well with T3 electrical. However the rest of the angi list vendors are lousy. Angi list shouldn't promote them at. THANKS TO T3 ELECTRICAL"
Electrical Project
Electrical Project
Electrical Project
Electrical Project
Electrical Project

+15

Response time3 days
Response rate100%
1 neighbors recently requested a quote
Avatar for Fulmer's Electrical, LLC
Fulmer's Electrical, LLC
4.7(
13
)
Electrical Switches, Outlets & Fixtures - Install or Repair

Serving Johnston, SC and surrounding areas

Approved

In business since 2018

Emergency services offered

Customers say: Quick response

"Fulmer electrical is awesome. Put up my ceiling fans, flood light, and my lorex security system for a great/reasonable price. They are coming back next week to install new lights for the kitchen. Call them today for all your electrical needs."
Kitchen Pendants
Can light install
Switch wiring
Panel wiring
Response time3 days
Recommended by100%of homeowners
Avatar for Ace Maintenance & Repair
Ace Maintenance & Repair
4.8(
66
)
Appliance (Major Electric Appliance) - Install or Replace

Serving Johnston, SC and surrounding areas

Approved

Super Service Award Winner

In business since 2012

Emergency services offered

Credit card accepted

"Jeff spoke with me in the morning after I requested service the previous evening (late). Told him about our dryer, not heating. He requested a text photo of the model number/SN on the sticker inside the dryer. I contacted him the following morning via text, he texted back that he had the repair part and would be at my home within the hour. He arrived and work was completed within 30 minutes----new heating element installed. I have never had a major appliance issue addressed so QUICKLY. Super impressed with Ace."
Response time2 days
Response rate100%
Recommended by90%of homeowners
Avatar for Camera Kings
Camera Kings
5.0(
32
)
Telephone Jacks and Wiring - Install - For Business

Serving Johnston, SC and surrounding areas

Approved

In business since 2006

Free estimates

Credit card accepted

"Got the company Camera Kings off this website based on reviews. Thus I feel that in order to help someone else - I also need to leave a review. Camera Kings (Shaun) contacted me and we set up a date/time to come out and view what needed to be completed. One day to view the project and one day to install. The gentleman that actually came to the house was Brian, and he was very professional and knowledgeable in his workmanship. He installed (hard-wired) two RING flood light cameras on my home in less than 3 hours. When I checked his work in the attic -- it looked as if the house was built with that security feature. He went up that ladder numerous times to adjust the camera angle and ensure the surveillance area was exactly what I wanted to see. He took the time to ensure everything worked properly before he left. Very good!! Top of the line!! Highly recommend this company to anyone that needs security camera work done on their home."
TV mount
Mount and electrical outlet
TV mounts
Ceiling mount
TV mount

+6

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

A piggyback circuit breaker, also known as a tandem or double-stuff breaker, combines two separate circuits into a single slot in a breaker panel. This design allows adding more circuits without a larger panel, making it a space-saving solution. Each breaker in the piggyback unit operates independently, protecting two circuits in one standard breaker slot. This is especially useful in older panels with limited space for additional breakers.

It’s generally not recommended to run electric to a shed above ground, and you should instead run electric lines underground via a conduit. This job, like all electrical jobs, is best left to a pro, as they’ll need to ensure everything is installed safely and that they don’t run into any other utility lines underground. 

Compared to amps, volts, and watts, ohms are a different kind of measurement, though also very common. Ohms show the resistance of materials like wiring: How much they impede the flow of electrons. The reason household wiring is usually copper or aluminum is that these materials are affordable and also have lower ohms, which means low resistance/high conductivity.

DIY is not recommended for commercial settings due to safety regulations. Hire licensed professionals for compliance.

A ceiling light will usually have two or three wires: black, white, and sometimes green. Black wires are positive, or hot, while white wires are negative, or neutral. The green wire is the grounding wire. 

When you’re wiring the light, connect black to black, white to white, and green to the grounding screw.

The Johnston, SC homeowners’ guide to electrical services

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