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Avatar for Mr. Electric of Gastonia
Mr. Electric of Gastonia
4.8(
60
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+2 more

Serving Alexis, NC and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Emergency services offered

"I want to take a minute and note that Carleton B. is incredible. Truly one of if not the best interactions I have had with a technician in any field and he is the sole reason we purchased a one year plan today. We are very pleased with his quality of work, communication, and timeliness. He has provided a great experience for us and for that we are very thankful."
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+89

5 neighbors recently requested a quote
Recommended by84%of homeowners
J. N. Greene Electrical Contracting Inc.
5.0(
9
)
Generator - Install - For Business

Serving Alexis, NC and surrounding areas

Approved

In business since 1995

Free estimates

Credit card accepted

"If you need electrical work done, please call J. N. Green Electrical. We started off by calling several companies out to our house to fix what we thought was a minor electrical problem. After three different electricians came out and three different bills, with nothing fixed, we found J.N. Green Electrical on Angie List. We were skeptical at first but said, Let give it a try. Green Electrical was out at our house that same day and was able to fix the problem in no time. They were very professional and charged me less than the other three companies that did not fix the problem. I would definitely recommend them to anyone! They have been our go-to guys ever since!"
Response time6 hrs
Recommended by100%of homeowners
Avatar for WyattWorks
WyattWorks
4.6(
58
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install+1 more

Serving Alexis, NC and surrounding areas

Approved (Corporate)

In business since 1979

Emergency services offered

Warranties offered

"Having owned four different houses the past 16 years, this was hands down the best experience with a plumber... ever. We hired WyattWorks to install a laundry sink (the stainless over cabinet kind) which required drilling through the floor to tie-in with supply and drain pipes in our basement. Jeremy performed the work flawlessly and was a true pro: measure and recheck, plan and dry fit, and clean up the work area during and after. The whole process from start to finish was painless!"
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+1

Response time12 hrs
5 neighbors recently requested a quote
Recommended by93%of homeowners
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Generator Install questions, answered by experts

Yes, in most municipalities, you will need a permit to install a permanent home generator, including emergency backup, partial-home, and whole-home models. Because these installations involve significant alterations to your home's electrical system and produce exhaust fumes, local governments often require a permit or inspection for safety purposes. A generator permit typically costs between $50 and $250, depending on your location. Your electrician or certified installer can usually handle the permitting process for you, but you will be responsible for the cost. It's a good practice to confirm with your installer that they will pull all necessary permits before work begins.

To determine the right size generator for your house, you should calculate the total wattage of the appliances and devices you want to power during an outage. List all essential items, note their start-up wattages, and add them together.

Here are some typical wattage requirements for common appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 to 4,500 watts

  • Electric furnace: 5,000 to 25,000 watts

A 7,500-watt generator might be sufficient for essentials like a refrigerator, freezer, well pump, and lighting circuits. However, for high-demand items like a water heater or furnace, a whole-home generator is a better choice. A portable generator may be enough if you only need to power a few critical items.

While home square footage can offer a rough estimate, it is not always a reliable indicator. For reference, here are some typical generator sizes based on square footage:

  • 1,000 sq ft: 6–9 kW

  • 1,500 sq ft: 7–10 kW

  • 2,000 sq ft: 10–14 kW

  • 2,500 sq ft: 12–16 kW

  • 3,000 sq ft: 16–20 kW+

For the most accurate sizing, consult a professional who can calculate your home's peak and average power consumption and recommend the optimal generator.

An undersized whole-house generator has the potential to overheat and shut down when you try to run a central AC system. This scenario can not only damage the whole-house generator, but can also trip your home’s breakers or cause electrical damage. To avoid this situation, hire a local generator installer to correctly size your whole-house generator.

Costs depend on generator type, labor, and additional wiring or transfer switch requirements.

Whole-house generators need to be installed on level ground several feet away from walls and other objects. Because they tap into the electrical system directly, they usually need to be close to your home electrical panel for a transfer switch installation. It also helps with installation if they are near to a gas line or propane tank installation.

The Alexis, NC homeowners’ guide to generator installs

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