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Avatar for Rooster Electric Co
Rooster Electric Co
5.0(
10
)
Fixed Generator - InstallPortable Generator - Install

Serving Fair Oaks, CA and surrounding areas

Approved

In business since 2024

Emergency services offered

Warranties offered

"Our house is over 30 years old and the electrical panel was in questionable state after various contractors over the years had accessed it for their projects. For safety and security reasons, we had Rooster Electric upgrade the electrical panel. The electrician needed to cut the house siding to install the new panel and did so expertly, providing new trim and caulking. The job looks great and we feel safer now that the panel is up to specs. Thank you, Rooster Electric, for walking us through the project and doing excellent work. Weâ re so tired of contractors taking the quick and easy route to get their job done rather than providing good, respectable customer service. Youâ ll get our recommendation whenever someone asks if we know a good and trustworthy electrical company. L&N in Fair Oaks"
Generator-fed subpanel to house
ATS
Old - Zinsco style
New, 200 amp panel
Response time2 hrs
Response rate92%
Recommended by77%of homeowners
Avatar for Hunts Electrical Services
Hunts Electrical Services
5.0(
27
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Fair Oaks, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Credit card accepted

"Just had them come and install some can lighting in my hall way that I wanted for some time now. They were able to remove my old fixture in the hall and install 4 new LED can lights, even installed the dimmer I wanted with it. Much appreciated!"
Response time6 hrs
Response rate95%
4 neighbors recently requested a quote
Avatar for J H Electrical Company
J H Electrical Company
4.5(
141
)
Fixed Generator - Repair

Serving Fair Oaks, CA and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"JH had to replace our electric box including the necessary grounding under our home to the water pipe, ground arching to the water heater. JH got the county permit, coordinated with SMUD to turn off then on our electricity and get county inspector to pass the work, all expedited. He also kept our necessary appliances running with his generator. I couldn t be more pleased with work."
photos
Electrical Services
Electrical Services
Electrical Services
Electrical Services

+29

Response time9 hrs
Response rate93%
87 neighbors recently requested a quote
Avatar for Silver Lining Electric
Silver Lining Electric
5.0(
12
)
Fixed Generator - InstallPortable Generator - Install

Serving Fair Oaks, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Emergency services offered

"honestly one of those guys you can count on. He does really solid work, knows his stuff, and takes pride in what he does. He’s easy to talk to, super respectful, and just a hard-working guy all around. If you need someone who actually cares about doing the job right, he’s your guy."
Main Panel upgrade
Main Panel upgrade
Main Panel upgrade
Main Panel upgrade
Main Panel upgrade

+10

Response time5 hrs
Response rate100%
17 neighbors recently requested a quote
Avatar for PM Electrical Services
PM Electrical Services
4.7(
40
)
Portable Generator - Install

Serving Fair Oaks, CA and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"They were fast, punctual, knowledgeable and took the time to explain the process and show me what was happening. They were polite, left the work area clean and I would definitely recommend them and will be utilizing them for future wiring repairs!"
Kitchen lighting upgrade
Kitchen lighting upgrade
Kitchen lighting upgrade
Kitchen lighting upgrade
Kitchen lighting upgrade

+12

2 neighbors recently requested a quote
Recommended by29%of homeowners
Avatar for Sparkwise Electrical Service
Sparkwise Electrical Service
5.0(
4
)
Generator - Install - For Business

Serving Fair Oaks, CA and surrounding areas

Approved

In business since 2024

Free estimates

Credit card accepted

Sparkwise Electrical Service provides professional residential and commercial electrical services with a focus on quality, safety, and dependable results. We handle electrical repairs, troubleshooting, lighting installation, panel upgrades and replacements, rewiring, EV charger installation, and more. We believe in clear communication, honest recommendations, and clean, professional workmanship on every job. Whether you need a quick repair, an electrical upgrade, or help diagnosing a problem, we’re ready to help. Contact Sparkwise Electrical Service today to discuss your project and request a free estimate.

Custom floating shelves
Custom floating shelves
Custom floating shelves
Custom floating shelves
Custom Redwood Mantel

+8

Recommended by100%of homeowners
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Generator Install questions, answered by experts

A portable generator can supply power to selected appliances and circuits in a home, but it's generally not designed to handle the entire household's electrical needs simultaneously. Portable generators have limited wattage capacity, so they are only designed to power essential devices and electronics temporarily until local power is restored. If your power needs outweigh the capabilities of a portable generator, consider installing a whole-home generator instead.

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.

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.

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. 

In most municipalities, you will need a permit to install a permanent home generator, including emergency backup, partial-home, and whole-home generators. A permit for a generator usually costs between $50 and $250, depending on where you live. Your electrician or certified generator installer will usually pull the permit for you—and might be required to do so by your building department—but you’ll be on the hook for the cost of the permit. You should ask your installer before agreeing to any work if they will pull the necessary permits for your project.

The Fair Oaks, CA homeowners’ guide to generator installs

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