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    Average homeowner rating
  • Verified reviews icon195
    Verified electrical services reviews

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Avatar for SciFiHomes Inc
SciFiHomes Inc
5.0(
27
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install+4 more

Serving Gerrardstown, WV and surrounding areas

Approved

In business since 2006

Free estimates

Warranties offered

"These guys did a fantastic job and were an absolute pleasure to work with. Small business, all primary work done by the three owners/operators of the group, who are are masters in their respective fields: "Tech Guy", Electrician, and Gas Fitter. (I genuinely hope to not cause offense by this broadly generalized description). I had a 20kW Cummins LP/NG-fired automatic backup generator installed and connected to a new automatic transfer switch, and (since we had no existing gas system) a new 500gallon LP propane tank installed and under-grounded to feed the generator. My main electrical panel was brought up to current code in the process. The excavation and burial work was subcontracted to a trusted local operator that did really nice work, and they worked with Southern States to provide a tank and first fill. They handled all the permits and coordinated the inspections. Waiting for the county inspector, and waiting for Southern States to fill the tank after the gas inspection, were the only observable delays in the process, and those were negligible/reasonable. The SciFiHomes people were quick, efficient, and obviously practiced with all of their pieces of the work. They will strongly prefer Cummins-brand generators over the competitors, and they are more a more expensive initial investment compared to them. After doing my own research after their sales pitch, it is a very worthwhile "upgrade". The difference between Cummins' generators and the competitors is fuel efficiency; according to the math, I'll get over 24 hours of additional runtime vs (as an example) Generac's 20kW generator at 40% average load on a full 420gallons of propane in the new 500gal tank. With an extended outage, or multiple long outages as with last winter in Frederick County, that's a very significant advantage. Sorry for the "sales pitch"; I only included this to prove that they're in my opinion very justified in pushing the "premium" brand. We purchased the extended warranty uplift as well as their extended service agreement. We can't recommend them enough; fantastic experience, and this generator has already flawlessly provided over 20 hours of outage coverage in the 5 months we've had it. Winter is coming, and we'll be ready this time. It just works... These guys and their total solution probably isn't the absolute cheapest in the area... but we absolutely got what we paid for. Thanks SFH!"
Cummins Onan 400A ATS
Cummins Onan 20kW
Briggs & STratton Standby Generator
Response time7 hrs
Response rate100%
7 neighbors recently requested a quote
Avatar for BLACK DIAMOND ELECTRIC & HVAC SERVICES LLC
BLACK DIAMOND ELECTRIC & HVAC SERVICES LLC
5.0(
6
)
Electrical Switches, Outlets & Fixtures - Install or RepairElectrical Wiring or Panel UpgradePortable Generator - Install+16 more

Serving Gerrardstown, WV and surrounding areas

Approved

Free estimates

Emergency services offered

Small jobs welcome

"I highly recommend Black Diamond Electric & HVAC Services, LLC. Their team identified the problem, gave recommendations and estimates on my repairs prior to working. Most importantly, they didn't try to sell me a new unit; they repaired my existing hot water heater. The repairman was professional and I have recommended him to my neighbors."
6 neighbors recently requested a quote
Avatar for Kline Electrical Services
Kline Electrical Services
5.0(
2
)
Fixed Generator - InstallElectrical Wiring or Panel UpgradeCeiling Fan - Install+21 more

Serving Gerrardstown, WV and surrounding areas

Approved

In business since 2023

Emergency services offered

Warranties offered

"Simply amazing from start to finish! I can't say enough nice things about this company or the people that I dealt with. They were all professional, friendly and they did great work. They called me just minutes after I clicked their name on Angi's List and had someone out to give me an estimate and had my appointment date set in record time from most companies that I have dealt with for home improvement. I hate having people in my house working but I felt totally comfortable with them. The work they did was exceptional. We got a new power box (breaker box - whatever it's call) and a new meter and a couple of new outlets put in. We also got new smoke detectors throughout the house. They had to work around some issues and relocate a bit of pipe from out water filter system that was in their way. And they just took care of it without any complaints. I didn't have to do anything. They took care of it all and had the inspector come out and get it approved. I feel safe in my home now. I highly recommend this company and I will be calling them for any future electrical work that I need done."
Our technician Mitchell while completing the replacement
Completed panel project
Additional Photos
Baseboard Heater Install Project
The Kline Family Service Club Seal

+3

Response time1 day
Response rate100%
3 neighbors recently requested a quote
KM Electrical Solutions
New to Angi
Electric Vehicle Charging Station Installation - For Business - Materials Provided by ConsumerElectric Vehicle Charging Station Installation - Materials Not ProvidedElectrical Switches, Outlets & Fixtures - Install or Repair+7 more

Serving Gerrardstown, WV and surrounding areas

Approved

In business since 2019

Free estimates

Small jobs welcome

KM Electrical Solutions, is THE standard for electric work in your area. Master electrician who is available to do any of your household electrical need, or commercial wiring for your newest addition to your home or business. This team is always professional and thriving to show you why you made the right choice choosing KM Electrical Solutions, they aren't looking to complete just 1 job but all of your electric needs. Available every weekday Monday through Friday and are ready to complete any electric work that you and your family needs done!

Avatar for Al's Electric
Al's Electric
4.6(
71
)
Ceiling Fan - InstallElectrical Switches, Outlets & Fixtures - Install or Repair

Serving Gerrardstown, WV and surrounding areas

In business since 2016

Emergency services offered

Warranties offered

"Al arrived on time to give me both an estimate and to do the work. He was very professional, completed the work within the estimated timeframe and within budget. The quality of the work is excellent. I will definitely hire him for future electrical projects and highly recommend him."
Martinsburg
Martinsburg
Panel upgrade
Martinsburg
Response time6 hrs
Response rate92%
Recommended by96%of homeowners
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Electrical questions, answered by experts

When converting a standard 120-volt outlet to a 240-volt outlet, the only components you can typically reuse are the existing electrical box and the hole in the wall. Everything else—including the wiring, breaker, and receptacle—should be replaced to ensure both safety and efficiency. Appliances designed for 240 volts have different plug configurations that won’t fit into a standard 120-volt outlet, making it necessary to install a compatible 240-volt receptacle. This design helps prevent overloading or underloading the power available to any one outlet or circuit.

Upgrading a two-prong outlet to a three-prong outlet typically costs between $20 and $50 per outlet if the electrical box is already grounded. However, the cost can increase significantly if the system is not grounded, as this may require grounding the box or upgrading your electrical panel. Electricians generally charge between $50 and $100 per hour for labor, and the total cost for a more complex installation could range from $130 to $300.

Yes, it’s safe to strip a wire if you follow the proper safety precautions. First and foremost, you must always disconnect the power and never try stripping a live wire. Using wire strippers is another safety precaution, but don’t forget to keep your fingers away from the blade. It’s also critical you only remove the insulation and not accidentally cut into the conductor, which is unlikely as long as you’re using the right-sized wire stripper.

How many string lights can be on one outlet depends on a number of varying factors, including the total wattage of your circuit, the type of lights, the energy needs of the lights, and cord specifications. It’s better to play it safe here to protect your circuit, so figure out the max wattage of your circuit, compare that to the lights, and move on from there. Generally speaking, LED string lights require less energy than incandescent bulbs, translating to a higher number of lights per circuit. 

With AC wiring, which is the kind most likely you’ll find at home, the black wire is “hot,” and the white is “neutral.” The bare or green wire is considered the safety ground wire. If you encounter DC wiring, it’s relatively easy to tell positive or negative wires apart. red wires are used to indicate positive voltage and black wires indicate negative voltage.

The Gerrardstown, WV homeowners’ guide to electrical services

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