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Avatar for GreenGo Electrical Services
GreenGo Electrical Services
4.7(
19
)

Serving Mccormick, SC and surrounding areas

Approved

In business since 2023

Emergency services offered

Small jobs welcome

"Chris and Mr. John did an excellent job installing my patio ceiling fan. I had a tight timeline to get this done and they were able to fit me in. They were courteous, clean, and efficient. I would highly recommend their services."
Response time5 hrs
8 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Electrical Service Precision LLC
Electrical Service Precision LLC
5.0(
7
)

Serving Mccormick, SC and surrounding areas

In business since 2005

Free estimates

"Angel and crew worked on my current meter on short notice. They made sure my overhead power supply was in good shape and gave me a free estimate before doing the job. Very professional team!"
Additional Photos
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+135

Recommended by100%of homeowners
Avatar for THE LEGACY ELECTRIC SERVICES OF THE UPSTATE INC
THE LEGACY ELECTRIC SERVICES OF THE UPSTATE INC
5.0(
2
)

Serving Mccormick, SC and surrounding areas

In business since 2024

Free estimates

Credit card accepted

We offer over 30 years of experience in the electrical industry. We take on a wide range of electrical projects to include full installation for additions and remodels as well as wiring and panel upgrades and a variety of other jobs. We're committed to providing a personalized service for each individual project we take on & look forward to building strong, long-term relationships with our clients and guarantee your satisfaction.

My jobs
My jobs
My jobs
My jobs
My jobs

+7

Response time10 mins
Response rate100%
Recommended by100%of homeowners
Avatar for The Home Depot - Generators
The Home Depot - Generators
2.5(
1
)

Serving Mccormick, SC and surrounding areas

In business since 2003

Free estimates

Small jobs welcome

Today, we're proud to be the world's largest home improvement retailer. In 2,300 stores across North America, we aspire to excel in service – to our customers, associates, communities and shareholders. That's what leadership means to us. That's The Home Depot difference.

Generators
Generators
Generators
Generator
Generators

+5

KTM Services
New to Angi

Serving Mccormick, SC and surrounding areas

In business since 1999

Free estimates

Give us a chance to earn your electrical service. KTM Services customer base consists of people that appreciate doing business with an electrician that delivers only the highest standard of quality electrical service. So what does quality electrical service mean? Ultimately, that means making our customer (the person paying the bills) happy with the job we've done, so that they might call us again for their future electrical needs. Our best customers have been using us for their wiring issues for over a decade in some cases. Give us a call!

Generator Install questions, answered by experts

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.

To power a central air system during a power outage, the whole-house generator will need to be at least 5,000 watts, and this number will significantly increase for larger units. Check the specific wattage requirements of your AC unit to choose the right generator size. Consider consulting a generator installer to ensure your whole-house generator meets your electrical load needs.

A home that is 2,500 square feet will likely need a 20kW to 25kW generator. Consult your local generator installer to confirm the generator size needed to power your home before purchasing a new one. Be sure to consider how much power your necessary devices need to run.

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.

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

The Mccormick, SC homeowners’ guide to generator installs

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