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Zander Electrical Services, LLC
4.8(
28
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Butler, WI and surrounding areas

Approved

In business since 2016

Free estimates

Credit card accepted

"Very pleased with quality, promptness following schedule, and care taken not to damage hosta plants in the construction area to install 18 kw whole home generator and transfer switch. The project went smoothly in spite of a one day rain delay. The generator and transfer switch were tested with a simulated loss of utility power and everything worked as expected - generator started and transfer switch allowed the generator to power the house automatically. When utility power was reenabled the transfer switch moved back to utility power position and the generator shut down. The price was fair and would certainly have no reservations to recommend them for any electrical work and would use them again."
Response time1 day
2 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Current Electric Company
Current Electric Company
4.7(
140
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Butler, WI and surrounding areas

Approved

In business since 1983

Emergency services offered

Credit card accepted

"I would recommend Current Electric to anyone! They are affordable, professional, and customer service oriented. We had Eric as our electrician and he went above and beyond for us. We had a new outlet installed, can lights installed, and ceiling fans installed. He kept us informed the whole time with updates on progress, time frames, and got our input along the way. We will definitely be using Current for all of our electric needs."
Kitchen Remodel
Landscape Lighting
Restaurant Lighting
Lighting in newly built hotel
Commercial Solar

+2

Response time1 day
7 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Mister Sparky of Brew City
Mister Sparky of Brew City
4.9(
11
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Butler, WI and surrounding areas

Approved

Super Service Award Winner

In business since 1996

Free estimates

Emergency services offered

"This is the first time I used Mr. Sparky, and they will definitely be my new go to electricians! I love that they are a small locally owned business! I called about a small non-urgent project, and they were able to come the same day, despite being backed up due to many local flooding issues. Kasey was extremely friendly and helpful on the phone and communication was excellent from start to finish. James showed up on time and was very sweet, yet professional, and my cats even loved him :) He was respectful of me and my property, and took care of my issue in no time. The price was very reasonable! I will definitely call them again, and would highly recommend!"
Branded Panel Install
Installation
Installation
Installation
Installation

+52

Response time1 day
Response rate93%
109 neighbors recently requested a quote
Avatar for Powerhouse, LLC
Powerhouse, LLC
5.0(
22
)
Generator - Install - For Business

Serving Butler, WI and surrounding areas

Approved

In business since 2002

Free estimates

Offers commercial services

"Jim was prompt , professional, and friendly. I was pleased with the work that I hired him for which included replacing 2 light fixtures and a doorbell. Im already planning another project to hire him for."
Response time12 hrs
Recommended by95%of homeowners
Avatar for In Phase Electric & Air
In Phase Electric & Air
4.1(
170
)
Fixed Generator - Install

Serving Butler, WI and surrounding areas

Approved

In business since 2009

Emergency services offered

Small jobs welcome

"All of their technicians were very professional and polite and helped me understand what was going on every step of the way, from the initial inspection, diagnosing the issue, deciding on a new furnace, and through the installation process. When the inspection showed that my furnace was no longer working, they even shuffled some appointments around to make sure I had working heat before it started getting too cold outside. Not only did they do a great job installing the new furnace and AC, they went out of their way to clean up the basement and duct work a bit and left things looking even better than when they got there! Mike was my technician for the initial inspection and Austin worked on the Furnace and AC install. There were a couple other techs with them as well who's names I didn't quite catch, but all of them were great!"
AC Tune Up
Nee an AC Tune Up?
Electrical Panel
Team and Job photos
Team and Job photos

+53

Response time5 hrs
43 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Wiedmeyer  Electric, LLC
Wiedmeyer Electric, LLC
4.9(
10
)
Fixed Generator - Install

Serving Butler, WI and surrounding areas

Approved

In business since 2007

Free estimates

Small jobs welcome

"This was the fastest most efficient contractor we have ever hired. He had our electric panel box upgraded with power surge protection on whole house. Highly recommended. We will hire again"
Gallery
67 neighbors recently requested a quote
Avatar for Freedom Electric, LLC
Freedom Electric, LLC
4.9(
8
)
Fixed Generator - InstallPortable Generator - Install

Serving Butler, WI and surrounding areas

Approved

In business since 2021

Free estimates

Small jobs welcome

"Tony installed soffit lights in our home and garage. We couldnâ t be happier with the results. Work was performed with the utmost professionalism and courtesy. He even took the time to completely explain how to use an app to control the lights installed. We would highly recommend Freedom Electric."
Response time1 day
Response rate85%
Recommended by100%of homeowners
Avatar for Roman Home Services
Roman Home Services
5.0(
5
)
Fixed Generator - InstallFixed Generator - Repair

Serving Butler, WI and surrounding areas

Approved

In business since 2018

Emergency services offered

Small jobs welcome

Roman Home Services is a leading electrical, plumbing, and HVAC contractor serving Southeastern Wisconsin. We offer a comprehensive range of residential electrical, plumbing, and HVAC services, including new construction, remodeling, repairs, and routine service. With the expertise and experience to handle projects of all sizes and complexities, our team is committed to delivering reliable, high-quality results.\n\nWhen you choose Roman Home Services, you can expect professionalism, integrity, and a commitment to excellence. We are proud to serve homeowners throughout Southeastern Wisconsin and look forward to helping with all your home service needs. Contact us today to experience the Roman Home Services difference and see why Milwaukee-area homeowners choose us for electrical, plumbing, and HVAC service.

Electrical Safety
Electrical Safety
A/C Tune-up
Sink & Faucet Install
Sink & Faucet Install

+4

126 neighbors recently requested a quote
Showing 1-10 of 44
Generator Install questions, answered by experts

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.

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.

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.

Generators run on a variety of fuel types, ranging from natural gas to solar power. Keep in mind that fuel costs varying by type:

  • Natural gas: $2,000–$21,000 per year 

  • Liquid propane: $2,000–$21,000 per year

  • Diesel: $3,000–$20,000 per year

  • Gasoline: $500–$3,000 per year

  • Solar generator: $2,000–$25,000 per unit

  • Battery backup: $10,000–$25,000 per unit

The Butler, WI homeowners’ guide to generator installs

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