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Avatar for Mr. Electric of Gastonia
Mr. Electric of Gastonia
4.8(
60
)

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

6 neighbors recently requested a quote
Recommended by84%of homeowners
J. N. Greene Electrical Contracting Inc.
5.0(
9
)

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
)

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
4 neighbors recently requested a quote
Recommended by93%of homeowners
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Generator Install questions, answered by experts

You can determine what size generator you need for a transfer switch by matching the switch to the largest outlet on your generator. Larger generators can power up to 10 circuits, while most 5,000-watt generators can provide power to six circuits. So, if your generator’s largest outlet is 30 amps, you’ll need a 30-amp transfer switch.

Costs range from $500 to $2,500, depending on generator type and installation complexity.

Whole-house generators can run continuously for extended periods, even for weeks at a time (around 400 to 500 hours), as long as they have a sufficient fuel supply. However, this type of extensive use will increase wear and tear and can shorten the generator's overall lifespan. During long periods of operation, it's important to check and refill the engine oil as needed, potentially as frequently as daily depending on the model. If your generator uses a fuel tank, ensure it is kept full to prevent unexpected shutdowns.

Generators are usually sized by running watts and starting watts. Ideally, you’ll want a generator that can offer both the necessary running watts and starting watts for everything you need to power without going beyond 90% of its capacity. Calculate your home’s electrical load based on the breakers in your home or adding up the appliance and lighting needs of connected rooms.

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.

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.