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Avatar for Cardinal Electric & Communications Inc
Cardinal Electric & Communications Inc
4.9(
62
)

Serving Randleman, NC and surrounding areas

Approved

Super Service Award Winner

In business since 2015

Free estimates

Emergency services offered

"The owner communicated with me quickly and sent two techs out to install my ring video doorbell and I’m happy with the work. I will hire them again soon to install a ceiling light fixture and some cafe patio lights."
Rockingham w/ Guest Home
DD w/ DriveThru
Northern Shores Pt
Primary Bath
Big or small we do it all

+147

Response time3 days
1 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for Southern Accents Lighting and Electrical Contracting LLC
Southern Accents Lighting and Electrical Contracting LLC
5.0(
11
)

Serving Randleman, NC and surrounding areas

Approved

In business since 2019

Small jobs welcome

Credit card accepted

"Great to work with from the initial quote to the final part of the installation of our generator. Arrived on time and finished ahead of time. They provided good insight into the workings of a generator and good ideas as to placement, size, etc. This was simply a great experience and I would highly recommend Southern Accents for any electrical needs."
5 neighbors recently requested a quote
Recommended by100%of homeowners
Ben Franklin Electric
4.2(
58
)

Serving Randleman, NC and surrounding areas

Approved

In business since 1995

Free estimates

Credit card accepted

"I had 2 projects for him to complete. He was unable to hard wire a ceiling fan as I originally asked about, but did install a new remote control that works good. He charged $160 which I feel was a little pricey since I purchased the remote control component, but it works. The second project was to install an outside motion sensor light on the front of my house - replacing a static, switch operated light. The first project was completed on December 19th and he said he would be back the following week, which was Christmas week. Then New Years Day holiday week came and went and he had still not contacted me about coming back to complete the work. I texted him on January 15th to see when he was going to return. He said he has been "tied up on emergencies". I can understand that, but I am getting the impression that I am small potatoes compared to other opportunities he has available. Today, 1/21/18 and he has still not contacted me to come back and do the work. I will be looking for someone else to do the work."
20 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Mr. Electric of Greensboro
Mr. Electric of Greensboro
5.0(
8
)

Serving Randleman, NC and surrounding areas

Approved

In business since 1991

Free estimates

Warranties offered

"Great service! Our technician even did a free inspection of our home to make sure there weren't any other issues. He explained things in a clear concise manner and was super friendly and professional."
Gallery
Gallery
Gallery
Gallery
Gallery

+15

Response time1 day
Response rate94%
69 neighbors recently requested a quote
Avatar for Dr Sparky LLC
Dr Sparky LLC
4.8(
5
)

Serving Randleman, NC and surrounding areas

Approved

Warranties offered

Credit card accepted

Customers say: True professional

We are a licensed and insured residential electrical contractor. We offer all services to do with a home, service and trouble shooting, new construction and remodels. Generator installations and EV charger installations. Our main focus is to provide correct and safe work at the highest quality.

Additional Photos
Additional Photos
Additional Photos
Additional Photos
Response time10 hrs
1 neighbors recently requested a quote
Recommended by75%of homeowners
Avatar for Eanes Heating and Air
Eanes Heating and Air
3.8(
22
)

Serving Randleman, NC and surrounding areas

Approved

In business since 1967

Free estimates

Credit card accepted

"They were on time, polite and efficient. They explained what they were doing every step of the way. Totally satisfied with everything Eanes has done for me over the last 2 weeks."
Eanes Tech looking at a breaker box
10 neighbors recently requested a quote
Recommended by82%of homeowners
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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.

If you have a transfer switch properly installed, the generator and main electrical power cannot feed the system at the same time. However, you should still shut off the power at your main circuit breaker panel before activating the generator. If you do that, you’ll simply need to shut off the generator and reset your circuit breaker once the local power comes back on.

Generally, you’ll want to keep between 60 and 70 feet between the generator and the transfer switch. There are a few reasons for this, including:

  • The distance reduces the noise coming from the generator into your home.

  • It increases efficiency because you won’t have a voltage drop from this short of a distance.

  • Prevents carbon monoxide poisoning: keep at least 15 feet between your generator and an open window. 

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.

No, you should never plug a generator directly into a wall outlet in your house. This practice is extremely dangerous, often illegal, and can cause "back-feeding," where power from the generator flows back into utility lines, creating a life-threatening hazard for utility workers. It can also damage your home's electrical system, including appliances like pumps and HVAC fans. If the main power is restored while the generator is connected, it can destroy the generator and cause an electrical fire. To safely connect a generator, you must use a professionally installed transfer switch or an interlocking kit, which prevents back-feeding by disconnecting your home from the utility grid before the generator provides power.

The Randleman, NC homeowners’ guide to generator installs

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