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Avatar for Top Notch Electrical Group llc
Top Notch Electrical Group llc
5.0(
5
)
Fixed Generator - InstallPortable Generator - InstallFixed Generator - Repair+1 more

Serving Palmyra, TN and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"Hired him to install a tandem 20 amp breaker and a 20 amp outlet in my garage. He showed up on time with all necessary tools and equipment, the job was completed in a timely manner and his price was the best I had quoted. He was very polite and professional and did an outstanding job on the install,by far the best electrician I have hired so far. I would highly recommend him to anyone needing some electrical work done for a fair price Top Notch is your choice. I will be using them in the future for all my electrical needs."
New panel upgrade
27 neighbors recently requested a quote
Avatar for On Site Industrial Electrical LLC
On Site Industrial Electrical LLC
4.2(
13
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+2 more

Serving Palmyra, TN and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"These young men took the inner working of the main electrical power distribution center of my house loose. Dismantled the connections and removed the panel, installed A new panel box, installed all the proper breaker and connected the wiring back in the right order. All in all an amazing feat to be completed in the time in was done. Puled up to the house at 7 in the morning and by 1:30 early the same afternoon power shut off to the house, MDP (main distribution Panel) and all associated hardware switched over, inspected and approved by State Electrical Inspector, and power restored. WOW. This company is about a year old and the young man that owns it is old school. His thinking is simple and straight forward. If I need work done and I'm in the area, one decision will be easy to make.
"
1 neighbors recently requested a quote
Recommended by15%of homeowners
Avatar for Hiller Plumbing, Heating, Cooling, & Electrical
Hiller Plumbing, Heating, Cooling, & Electrical
4.5(
38
)
Fixed Generator - InstallFixed Generator - Repair

Serving Palmyra, TN and surrounding areas

Approved (Corporate)

In business since 1990

Free estimates

Small jobs welcome

Hiller Plumbing, Heating, Cooling, & Electrical, established in 1990, stands for quality and reliability. With our 'Happy You'll Be or the Service is Free' guarantee, we are dedicated to customer satisfaction in Clarksville and the surrounding communities. Our plumbers provide emergency repairs, sewer line service, and expert installation or repair of water heaters. Our HVAC specialists ensure your comfort with preventative maintenance, air conditioning and furnace repairs, for year-round comfort. Our licensed and insured electricians offer prompt emergency response, custom upgrades, and safe, thorough electrical fixes for both residential and commercial properties. Hiller is your trusted provider for all your home service needs.

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+14

Recommended by94%of homeowners
Generx Generators
New to Angi
Fixed Generator - Install

Serving Palmyra, TN and surrounding areas

Approved

In business since 2003

Free estimates

Credit card accepted

GenerX provides residential homeowners and businesses with all their standby electric power solutions. We sell, install, service, and maintain Generac generators. We are a certified Generac Premier Dealer. In order to meet this qualification, Generac requires that you have a large inventory of new generators and parts, employ at least eight factory trained technicians, and maintain a minimum customer satisfaction rate of 92%. GenerX exceeds all of Generac's criteria and has received an abundance of Generac awards for sales, service, and installation.

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Generator Install questions, answered by experts

Sizing a generator is a careful process that requires calculating the electrical load of your entire house. You have to take into account every device you want to use and their wattage requirements, plus the wattage needed to start them, and look for a generator that can safely run all that at around 80% capacity.

In more practical terms, a small home can run on a 10,000-watt generator (and if you only want to power a few key appliances, much less than that). A mid-sized home may need something between 15,000 and 22,000 watts. Larger homes require 25,000 watts or more. 

Homeowners can often access federal tax credits, such as the Investment Tax Credit (ITC), which covers a percentage of installation costs. Many states and utilities offer additional rebates, grants, or performance-based incentives. These programs can significantly lower your upfront investment. Check the Database of State Incentives for Renewables and Efficiency (DSIRE) or contact your local energy office for current offers.

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.

As a safety measure, you should always turn off the main breaker while operating your generator’s backup breaker. In addition, you should also switch off all appliance breakers so you don't have a power surge when the main breaker turns back on. And finally, turning off the main breaker prevents back-feeding, which endangers utility workers with the risk of electrocution. Back-feeding could also destroy the electrical circuits of your neighbors if they use the same power network.

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.

The Palmyra, TN homeowners’ guide to generator installs

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