What can I run on different generator sizes?

• <div><p>Here’s what you can run with different wattages and types of generators:</p><p>Portable generator:</p><ul><li><p>2,000 watts can handle a large appliance like a freezer or refrigerator, plus a few smaller items like phones or computer chargers. </p></li><li><p>4,000 watts will keep two large appliances operating and a few smaller devices.</p></li><li><p>8,000 watts should power most essential appliances and other devices, including a sump pump, well pump, or your dishwasher.</p></li></ul><p>Partial to whole-house generator:</p><ul><li><p>20,000 watts and above will make it seem like your home’s power is still on.</p></li></ul><p></p></div>

How do I know what size generator I need?

• <div><p>When <a href="https://www.angi.com/articles/what-size-generator-do-i-need.htm">choosing the right size generator</a> for your needs, consider a few items to help calculate the wattage you’ll need. Start by determining which household items and appliances you want to power, and then add the wattages together. Check out the wattage of these essential appliances:</p><ul><li><p>Refrigerator: 600 watts</p></li><li><p>Large dehumidifier: 700 watts</p></li><li><p>Large window air conditioner: 1,400 watts</p></li><li><p>Water heater: 3,000 watts</p></li></ul><p>Running home appliances like these requires a partial or whole-house generator. A portable generator may be enough to power your home if you only plan to keep a refrigerator and freezer running. </p></div>

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Q: How big of a generator do I need for a transfer switch?

• <div><p>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&rsquo;s largest outlet is 30 amps, you&rsquo;ll need a 30-amp transfer switch.</p></div>

Q: What can I run on different generator sizes?

• <div><p>Here&rsquo;s what you can run with different wattages and types of generators:</p><p>Portable generator:</p><ul><li><p>2,000 watts can handle a large appliance like a freezer or refrigerator, plus a few smaller items like phones or computer chargers. </p></li><li><p>4,000 watts will keep two large appliances operating and a few smaller devices.</p></li><li><p>8,000 watts should power most essential appliances and other devices, including a sump pump, well pump, or your dishwasher.</p></li></ul><p>Partial to whole-house generator:</p><ul><li><p>20,000 watts and above will make it seem like your home&rsquo;s power is still on.</p></li></ul><p></p></div>

Q: Is it safe to run a generator continuously?

• <div><p>It is safe to run a generator continuously, but you must follow safety protocols to ensure personal and home safety. Read the manufacturer&rsquo;s instructions for specific recommendations, but the general recommendation is to turn generators off overnight or when you&rsquo;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. </p></div>

Q: Can you use your electric car as a backup battery?

• <div><p>If you&rsquo;re wondering <a href="https://www.angi.com/articles/using-electric-car-as-home-generator.htm">if you can use your electric vehicle as a backup battery</a>, it depends on whether your EV is compatible with bidirectional charging. This technology allows energy to flow both ways, enabling vehicle-to-home (V2H) backup power, vehicle-to-load (V2L) for appliances and camping, and vehicle-to-grid (V2G) to support the power grid. Compatible EVs convert stored DC energy into usable AC power, helping reduce energy costs and enhance grid stability while providing emergency backup power.</p></div>

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Verified Reviews for Generator Install pros in Cairo, NE

*The Angi rating for Generator Install companies in Cairo, NE is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

*The HomeAdvisor rating for Generator Install companies in Cairo, NE is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

Last update on November 29, 2025

Reviewed in October 2025
Walkout garage door was replaced and painted. Broken handle on glass storm door was replaced. New tv was installed on retractable mount and new soundbar was installed. Very satisfied with all repairs and installations. Workers were very professional and left the areas clean and tidy.
House Doctors Northwest Omaha
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Reviewed in January 2024
The installers were courteous and great to work with. We had over 30 windows installed, which obviously took some time. It was obvious towards the end that they were getting pressure from the top to get done. There were some issues with our new patio door that did not get completed correctly....
J-Tech Construction
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Reviewed in March 2023
Well, so far, I am very happy installation was fast. It was done well that it appears to me and the price I thought was reasonable and the information that I was given by the installer was very helpful. He was very knowledgeable and covered all of my concernsâ ¦ I would highly recommend them!
Dog Guard
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Reviewed in November 2013
First, the guys that came over to our place were professional and courteous. Dean was the main salesman. The first thing they did was to ask me what I wanted to change in my home in regards to comfort. I appreciated that as they actually cared about the things that I saw as problematic. They...
Thermal Services Inc
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Reviewed in July 2013
Now our original gas line installer is supposed to move the gas line to where we want. I apologize for the inconvenience, our contractor is getting the installer to move it to the desired location. Your pro was great and I would recommend him to anyone.
Plumbing Specialties
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Reviewed in July 2013
Clayton showed up 30 min early. I had told them that I would be home all day so they could come early if possible. He quickly diagnosed the problem, explained it to me and told me the cost to fix it. He indicated that it was a part he had in his van and could fix it right away. I agreed to...
Andy's Appliance Repair
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Reviewed in April 2012
This company sent out canvousers, and we called them for new windows and patio door. We where lied to from the start. The y claim you save 50% on energy bills, they qualify under the Nebraska Energy Assistance Program and the all your windows and doors that are custom built will be installed...
American Exteriors
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Reviewed in February 2010
McEwen Construction contracted Neeman and sons. A report will be filed for both of these companies. This one is for Neemann and sons the original roofing contractor. On 2/28/2006 we (I and my daughter and her then fiancé) contracted with Ryan McEwen of McEwen Construction to be the general...
Neemann and Sons, Inc.
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Reviewed in February 2010
A similar report is being filed against the roofer, Neemann and Son's On 2/28/2006 we (I and my daughter and her then fiancé) contracted with Ryan McEwen of McEwen Construction to be the general contractor in charge of constructing two homes who’s frames were constructed by Yankee Barn Homes...
McEwen Construction
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Find Generator install pros in Cairo

James Mendyk Services

5.00(

)

•Approved Pro

James Mendyk Services

5.00(

)

•Approved Pro

Customers say: Quick response

Recommended by 100% of Angi customers

1 years of experience

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

"Hie is Very particular. Very neat. Does everything perfect."

Barb H on October 2024

"Hie is Very particular. Very neat. Does everything perfect."

Barb H on October 2024

My Classic Car Trader LLC

2.00(

)

My Classic Car Trader LLC

2.00(

)

53 years of experience

Sales, Service & Rebuilding of Antique and Classic Car Components such as, Carburetors, Starters, Generators, Fuel Pumps, Double & Single Action Fuel Pump Rebuilding, Water Pumps, Hydraulic Top Pumps, Distributors, and DELCO Knee Action Shocks, We also carry a complete line of NOS and NORS parts. We offer FREE Technical advice for any YEAR Classic Car 609-462-7412

"Beware. They charged me double shipping even after I told them I would wait so I wouldn’t have to pay two shipping fees. The last item was a fuel pump that I had a problem with. I have made 4 calls to ask for help with no return call. Poor"

Frank H on July 2020

"Beware. They charged me double shipping even after I told them I would wait so I wouldn’t have to pay two shipping fees. The last item was a fuel pump that I had a problem with. I have made 4 calls to ask for help with no return call. Poor"

Frank H on July 2020

LIGHTHOUSE ELECTRICAL CONTR

4.25(

)

LIGHTHOUSE ELECTRICAL CONTR

4.25(

)

Customers say: Terrific value

20 years of experience

Electrical Contracting company based out of Scottsbluff, Nebraska. We serve the Wyobraska area. We accept credit cards, check, and cash payments.

Generator Install questions, answered by experts

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.

Here’s what you can run with different wattages and types of generators:

Portable generator:

2,000 watts can handle a large appliance like a freezer or refrigerator, plus a few smaller items like phones or computer chargers.
4,000 watts will keep two large appliances operating and a few smaller devices.
8,000 watts should power most essential appliances and other devices, including a sump pump, well pump, or your dishwasher.

Partial to whole-house generator:

20,000 watts and above will make it seem like your home’s power is still on.

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.

If you’re wondering if you can use your electric vehicle as a backup battery, it depends on whether your EV is compatible with bidirectional charging. This technology allows energy to flow both ways, enabling vehicle-to-home (V2H) backup power, vehicle-to-load (V2L) for appliances and camping, and vehicle-to-grid (V2G) to support the power grid. Compatible EVs convert stored DC energy into usable AC power, helping reduce energy costs and enhance grid stability while providing emergency backup power.

When choosing the right size generator for your needs, consider a few items to help calculate the wattage you’ll need. Start by determining which household items and appliances you want to power, and then add the wattages together. Check out the wattage of these essential appliances:

Refrigerator: 600 watts
Large dehumidifier: 700 watts
Large window air conditioner: 1,400 watts
Water heater: 3,000 watts

Running home appliances like these requires a partial or whole-house generator. A portable generator may be enough to power your home if you only plan to keep a refrigerator and freezer running.

The Cairo, NE homeowners’ guide to generator installs

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

See all articles

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Nov 25, 2025Nov 25, 2025
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Can a Whole-House Generator Run an Air Conditioner?
A whole house generator can keep your home running during a power outage, but can it handle the energy demands of an air conditioner? Here’s what to consider.
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Best Fuel For a Whole-House Generator: 5 Options
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How Do Natural Gas Generators Work?
Natural gas generators can tap into existing gas lines so they never run out of fuel. Here’s how they work and how they’re used.