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Avatar for Timpi Electric Solutions LLC
Timpi Electric Solutions LLC
5.0(
25
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Nappanee, IN and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Emergency services offered

"Tim is terrific, after speaking with him on the phone he made time to help me with my electrical issue the following morning. He is very polite, respectful, and professional. If I need additional assistance in the future, he will be my first choice."
Commercial Subpanel
Response time1 day
10 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for Tri-State Water, Power & Air
Tri-State Water, Power & Air
4.3(
8
)
Fixed Generator - InstallGenerator - InstallGenerator - Install - For Business

Serving Nappanee, IN and surrounding areas

Approved (Corporate)

In business since 1992

Emergency services offered

Warranties offered

"It was pretty rocky. At first. Several appoints made by Tri-State no one ever showed up.Crew showed up to install the Generator before the site survey and did not have necessary equipment or cooperation of Electric or gas company nor call before you dig had been notified. I called Tri-State to warn them the call before dig had never been preformed. They said they'd take care of it, did not happen until right before installation crew came back the second time. The first time they were here they could not have installed the generator even had they had all the parts because none of the utilities had been marked. Finally after about three months the Generac was installed and working. I had several questions that I could never get answered by calling Tri-State. One of the installation team had to come back a couple of weeks later to replace a damaged part and he answered all my questions. The guys who installed the Generac were great, the problem is your guys operation center and call center as far as I can see do not communicate very well. Anyway the generator has worked fine in several power outages this spring. I am happy right now but I live in dread something goes wrong and I have to call Tri-State for help."
Additional Photos
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+2

87 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Nunez Electric
Nunez Electric
4.9(
84
)
Portable Generator - Install

Serving Nappanee, IN and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Emergency services offered

"Juan was on time and very professional. Did an excellent job adding a sub panel for a generator and even correct a code violation that was found in the main box when he opened it up. The time estimate and price quot where both right on the money. He also did a great clean up job when the work was finished. Would recommend him to anyone needing some electrical work."
Paint bay
Shop
Master bath vanity
Kitchen
Entry hall

+27

Response time2 days
18 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Knee's Electrical Service
Knee's Electrical Service
4.7(
97
)
Fixed Generator - Install

Serving Nappanee, IN and surrounding areas

Approved

In business since 1971

Free estimates

Warranties offered

"Kneeâ s Electrical is a very respect contractor in Grant County, Indiana area. I highly recommend this contractor for residential work. I want thank Charles and Kaden again for a great job and experience on my Generac Generator installation Thanks Again"
Knee's Electrical Service
Knee's Electrical Service
Knee's Electrical Service
Knee's Electrical Service
Knee's Electrical Service

+5

Response time1 day
11 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for McCormick Electrical Services, Inc.
McCormick Electrical Services, Inc.
4.3(
78
)
Fixed Generator - InstallPortable Generator - Install

Serving Nappanee, IN and surrounding areas

Approved

In business since 1999

Emergency services offered

Warranties offered

"Kaidyn quickly identified and resolved the problem with a GFI outlet. He completed the safety review which identified a potential problem that should have been detected during a home inspection. Based on findings and my additional requests, Noah joined him and they quickly and efficiently completed raising pendant lights, replaced other outlets to meet code, installed an additional ground rod and surge protector. They also exercised care while in my home. I highly recommend McCormick Electrical Services!"
 Truck 13 & Tom
 Truck 18 & Tom
 Truck 17 & Lincoln, Tyler, Mark
Home Standby Generator
Home Standby Generator

+6

Response time2 days
18 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for McClone Electric, LLC
McClone Electric, LLC
5.0(
10
)
Fixed Generator - Install

Serving Nappanee, IN and surrounding areas

In business since 1981

Free estimates

Offers commercial services

"Dustin did a great job and worked during the different phases of electric installation from early in the process until completion. The amazing thing about Dustin is that he is so agreeable, always willing to listen to the question and then set about completing the task. It was a pleasant experience."
Response time4 hrs
Recommended by100%of homeowners
Showing 1-10 of 24
Generator Install questions, answered by experts

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.

A 10,000-watt generator can run a small to mid-sized central AC unit (typically up to 3 tons or 36,000 BTU) along with a few other appliances. However, larger AC units or additional loads will require a bigger generator. Consult a local generator installer to ensure you add the correct size generator to your home.

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.

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.

You can expect a diesel generator to last for up to 30,000 hours of use, which works out to 20 to 25 years with the proper maintenance, of course. That depends on how much you use it, so a diesel generator used for emergencies a couple of times a year will last a lot longer than a generator that takes over for a faulty electrical grid every month for a day or two. 

The Nappanee, IN homeowners’ guide to generator installs

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