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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 Greenbrier, TN and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"This is definitely the guy to hire if you need any electrical work done! He was kind and exceptionally professional. It was supposed to be a simple ceiling fan replacement. However, Larry found a serious problem with my wiring that I'm blessed didn't actually cause a fire in my home. He showed me the problem and fixed it even though that really should have been a separate call. I am over the top pleased with the service and work performance. I HIGHLY recommend Top Notch Electrical and Larry!!! 5 STARS!!!"
New panel upgrade
30 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 Greenbrier, 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
Legend Electrical Services
4.5(
13
)
Portable Generator - InstallPortable Generator - Repair

Serving Greenbrier, TN and surrounding areas

Approved

In business since 2004

Free estimates

Credit card accepted

"Matt from Legend is awesome, very friendly and professional. I highly recommend him for any of your electrical needs. We have a few more projects that need to be done and will definitely be using Legend Electrical Services."
Response time1 day
6 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Premier Generators
Premier Generators
New to Angi
Fixed Generator - Install

Serving Greenbrier, TN and surrounding areas

Approved

In business since 1994

Free estimates

Emergency services offered

Premier Generators has helped homeowners and businesses across the Southeast protect what matters with reliable Generac home standby generators for over 30 years.\n\nWhen power goes out, your generator is designed to start automatically and restore power within seconds, helping keep your home or business running smoothly. We start by learning what matters most on your property, then guide you through a clear process: right-sized recommendations, permitting, installation, and complete start-up and testing.\n\nOur relationship does not end at installation. We provide service and maintenance to help your system stay ready, including routine inspections, preventive maintenance, and repairs. Ask about maintenance plans and support options, plus warranty coverage that can extend up to 10 years.\n\nWhether you’re protecting a whole home or a commercial site, we’ll help you choose the right solution for your needs and leave you feeling confident, informed, and prepared long before the next outage.

136 neighbors recently requested a quote
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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.

While standby generators provide essential backup power, they can fail when you need them most due to lack of maintenance, fuel supply issues, dead batteries, electrical problems, or improper installation. To avoid costly failures, professional installation and regular maintenance are crucial. Licensed technicians ensure safety, uphold warranty requirements, comply with regulations, and provide expert servicing.

Carbon monoxide emissions aren’t only dangerous to human life, but they also harm our planet. While natural gas generators emit lower levels of CO than other fuel sources, there are still ways to reduce emission levels. For example, shop around for an eco-friendly generator that complies with current emission standards. Also, make sure your generator is serviced regularly to avoid CO buildup. 

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.

It is safe to run a generator continuously, but you must follow safety protocols to ensure personal and home safety. Read the manufacturer’s instructions for specific recommendations, but the general recommendation is to turn generators off overnight or when you’re away from the house. Overworked generators can pose a fire hazard and if your generator is not in a well-ventilated area, running it continuously could lead to carbon monoxide poisoning.

The Greenbrier, TN homeowners’ guide to generator installs

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