Best 20, 30, 50, 100, 200 Amp Generators For RV & Homes

Perhaps you think that all generators for RVs & homes are the same. Or suppose you are not sure how to pick one. We’ve got the perfect guide for you.

We cover the different types and their best features. You’ll learn about power load and more. Take a closer look to better know the best 20 through 200 amp generators in the market, whether for your RV or your home.

What is the reason for having one?

  • For RV

Generally, you need the generator to illuminate the camper at night and use the electric-based appliance. Therefore, a portable model is perfect for keeping in the RV. That will make you feel at home but away from the crowd.

  • At home & offices

During outages, these units are a reliable source of electricity. It is becoming increasingly important in the modern world.

Without one, what would you do if a sick family member needs medical equipment that runs on electricity? What can you do with the foods in your fridge if the electricity goes out for a few days? What are your choices if you need to meet job deadlines? How can you deal with high heat or cold temperatures?

These are the common reasons why these machines are crucial to every household or workplace. It fills the gap during a blackout. And maybe it is time to have yours right now.

Understanding How They Work

champion generator

A generator creates electricity by converting mechanical power to electrical power via external circuit functionality. It usually uses propane and diesel. Gasoline is another common type of fuel. It is similar to an electric motor. But it works with a reverse flow of electricity, transforming mechanical energy into electrical energy.

There is always an appropriate model for your purpose, whether you need a temporary double-throw or a standby source.

Sources of energy

For it to run, they need energy sources. The two types of energy sources are fossil fuel and natural or renewable energy sources.

Examples of fossil-fuel sources include gasoline and diesel. Emulsified diesel and biodiesel are on the list, too.

On the other hand, renewable sources include propane gas and natural gas. Solar energy is also on the list, as is hydrogen.

The regular ones that we use for home and RVs are run either with diesel or gas as energy fuels.

What are the types?

There are three main types that you can use to supply electricity for several appliances at home. Or to carry along when traveling with your RV.

generator outside
1) Portable

It is a fuel-fossil energy source type, usually powered by diesel or gasoline. It is the most common fuel source of all the choices because it is readily available. It is easy to see why this model is cost-effective and convenient.

A portable option has distinctive characteristics. It can connect appliances or equipment via its sockets. You can also use an extension cord to plug in several gadgets.

It uses a combustion engine to convey electricity. It can be paneled to the electrical sub-panel of the house to supply electricity to a TV or refrigerator. It is very transportable as you can bring it to remote sites to run several lights and tools.

Hence, this type is best for residential use and home office as a temporary power source. It is sufficient to provide short-term electricity at a cheaper cost.

2) Inverter

An inverter generator generates alternating current (AC) power converted to direct current (DC) by an engine linked to an alternator. After which, it inverts the alternating current to direct current via a rectifier.

It has enough electricity for appliances and motorboats. It’s great for electro mobiles and similar applications. It is also very lightweight and portable, making it perfect for RVs and boats.

3) Standby

A standby model is also known as a “backup generator.” It uses gas or diesel as its fuel source as well. It is classified as an emergency power system. It’s because it employs an electronic transmission switch that activates automatically in an outage. After just a few seconds, the system quickly turns on and provides power to the entire facility.

Since it has a huge external tank, it can run for an extended period. This third type is ideal for medical support equipment and hospitals. Apartments and even larger institutions connected to grid power are also good use cases.

Now, we understand a bit about these machines. It is time to compare the various options we can find. Below are the lists of a few choices with their different amp ratings which you can choose from.

20 amp generators

A 20 amp option is capable of producing up to 2,400 watts. During outages, it will last up to 8 hours if wholly charged.

It is fuel-efficient and provides constant power to sensitive equipment and electronics. That makes this option very suitable for job sites and recreational applications, such as:

  • Circulation air-fans
  • Large concrete drill machine and grinder
  • Air compressor
  • Circular saw
  • Multiple hand tools
  • Chargers
  • Lightings

Are 20 amp generators enough to run an RV? Yes, it is. It can power up an RV with an air conditioner with a 5 kW output rating.


30 amp generators

A 30 amp generator is also suitable for camping and RV travel with its portable design options. It can also act as a backup source for your house, safeguarding you in case of an outage. It can provide up to 3,600 watts of electricity for 120-volt devices or appliances.

Since some RVs have a 30 amp grid, most people use models with this rating. That may also mean that you can only plug in other items if you don’t expect to use more than 3,600 watts. Otherwise, the rig will trip off.

The same is true if you use one of these at your home. It would suffice if you only need to run a refrigerator or a few lights. While small, it’s great for a couple of small appliances.

50 amp generators

A full tank gasoline 50 amp (12,000 watts) generator can run up to 9 hours of operation. This size will provide electricity for the essential appliances and equipment simultaneously. It is more than enough to keep you comfortable during blackouts.

It has more than it takes to handle multiple tools and large equipment to get your task done at job sites. The engine is powerful enough to manage tools and devices at one time, including:

Getting one that is much bigger than the expected energy requirements is always a wise option. As such, you are sure to have an extra wattage allowance for additional applications.

Best 60 amp generators

Compared to other portable units, a 60amp  model gives you a comparative edge. Its large tank can hold up to 15 gallons of fuel and run for 9 hours. It is big enough that you would not need to stop now and then refuel.

It is very durable as it can endure long periods of operation while delivering clean power to sensitive equipment.

It features an emergency transfer switch (ETS) paralleled to a building’s electrical sub-panel for backup power during outages.

Best 100 amp generators

If you have a 100 amp service panel, it is best to use an 8-12 kW generator set. Though it is insufficient to operate the whole home, it is more than enough to handle the essentials at once.

As a result, you can run your massive appliances. It includes things such as:

  • air conditioning
  • a sump pump
  • Refrigerator

Make sure to also check out our resource on adding a shower to a half bath. That way, you can get the highest amount of potential resale value out of the remodel.

Best 200 amp generators

A 200 amp 20 kW generator can run off up to 5-ton of central air conditioning or heating. It’s great for a cooker and other large consumption appliances.

The Generac 22 kW automatic unit is one of the most powerful air-cooled models available today. It could satisfy the required electricity demand of the users while supplying whole-house backup power. It’s an innovative smart type of product. It enables you to monitor its operating status and maintenance alert anywhere using a smartphone or PC. It is the best-in-class 22 kW model for your home and business.

The same is true of the Generac guardian 7043 and the entire Generac guardian series. It has enough circuit coverage to power the whole house with various appliances and equipment that suit the bill. Thanks to its FREE Mobile Link, checking the status is now simple regardless of your location.

Kohler power systems also provide the most acceptable 200 amp models available on the market today. They have a wide variety of powerful and modified products to meet the needs of the home and the worksite.

The wattage reading in terms of what it can run is seen in the table below.

kW (range)W (range)What it can run
10 – 1210,000-12000Use it for well pumps and electric heater or cooler. It’s great for a central air-conditioner unit or a cooker.
16 – 2216,000-22,000Use it for high voltage appliances like a hairdryer or electric space heater. Window air conditioners or garbage compactors get powered by this. Use your countertop microwave or electric kettle whenever you want. It can even power an electric dryer and similar large appliances.

400 amp generators

Honda Power Equipment supplies high-quality products. They are the leading manufacturer of commercial-grade equipment with outstanding features and dependability. Honda units have gained recognition for portable tools, providing the ideal power supply for homes and work sites.

The Honda 240v inverter generator will work for nearly 20 hours on a full tank of fuel. Its current is powerful enough to run RV air conditioners and refrigerators. If you have a microwave and other appliances, you’re good to go as well. It is fuel-efficient and super quiet and at a very reasonable price.

Suppose you have a 30-50 kW unit. The service panel should be set to 400 amps to maintain power if you have many air conditioners. These and other appliances draw a lot of energy.

Yamaha products also have featured a wide range of high-end sets. Their lineup comprises sturdy, high-quality units from which you can choose.

Be sure to also check out our guide on 12,000 – 14,000 and 5,000 to 6,000 BTU air conditioners. If you’re curious to read more after that, we will encourage you to read our guide on steel and rust.

What to look for?

Choosing the right one is easy. Just remember these few tips:

1) Know the purpose of operating one.

  • For home use – A standby or an inverter is suitable. Compute how many essential appliances are needed. It should not exceed the maximum generator running power.
  • Camping – Compact and low-noise inverter model.
  • DIY and worksite – High output model.
  • For emergencies – Portable options are suitable due to their adaptability.

2) Check the consumption

Power consumption may vary depending on the appliance or unit. Start-up power may consume twice as higher as standby consumption.


Appliance unitStandby consumption (W)Start-up consumption (W)
Coffee maker620620
Mercury lamp4001,600
Electric fan50100

Do you need to convert SAE to metric? We also have a guide for that, as well as guides. Make sure to check out our guides on the best 12,000 BTU air conditioners and lawn tractors. We have guides on extension cords & deep cycle batteries as well.


3) Choose one suitable for a given need

If you have a bigger house, it is reasonable to look for a high output model. It compensates for the number of appliances required for power consumption.

A home standby generator is the right choice for home use since this type provides ample power to provide electricity to the whole house.

While portable ones are best for outdoor applications and job sites due to their portability, they have some limitations.

If you’re going to weld, there are lots of things like the right welding glasses and gas that you will want. You will also want to make sure you get the right one for the purpose. Be sure also to check out our guide on gasless MIG welders.

4) The value for money

Always look for the best brand. It may be a bit costly, yet it delivers remarkable performance. In return, it best serves its purpose. It provides comfort and security during blackouts and other related applications.

5) Efficiency

The unit’s efficiency is through the power of the load circuit and the total watts generated. The units of energy are distributed according to the number of units plugged in.

6) Essential requirements

When choosing one, consider its essential requirements.

  • Run-time

You should consider the importance of the unit’s run-time, especially if you’re planning to use it for extended periods.

  • Fuel tank capacity

How big is the tank’s capacity? There are many reasons you will want to make sure that the one you’re choosing has a capacity that you’re happy with. When you’re running your machine for an extended period, you will want one that can hold the necessary amounts of fuel.

  • Built-in sockets /outlets
  • Cord length
  • weight
  • Durability
  • Power source
vintage generator


What size generator do I need for 50 amps?

To generate an electrical current of 50 amps, it is recommended to use a generator with power between 12,000 and 12,500 watts.
Of course, it is best to choose the type of generator according to your needs.

If you are going to use it in an RV, it is best to choose the size you need depending on the equipment in the RV.
The power consumption of an RV will depend entirely on the type of electrical equipment in its endowment.

Will a 50 amp generator run a house?

A 50 amps generator has the necessary qualities to supply electricity to all electrical appliances inside a house.
In a power failure, it can be used reliably as a secondary power source.

Such a device can power all the major appliances in a house, such as:
– refrigerator
– air conditioner
– lights
– freezer
Fortunately, there are many 50 amps models that you can easily purchase.

Will a 3500-watt generator run a 30 amp camper?

A 3500-watt generator is capable of powering a 30 amp camper.
Such a device has the necessary skills to supply any camper with electricity without problems.
This will be radically influenced by the number of appliances that operate simultaneously in the camper.
The more appliances in the camper that are switched on simultaneously, the harder it will be for the generator to power.
That’s why it’s a good idea to avoid using multiple devices simultaneously if you notice that your generator is having some issues.

How many amps is a 22kW generator?

A 22kW generator has about 100 amps.

A device with such a capacity is ideal for any homeowner who wants to buy a reliable one.
It has the necessary characteristics to supply electricity to a house with 3,000 – 4,000 square feet.

Such a generator can easily power the following:
– HVAC system
– washing machine
– oven

What size generator do I need to run 40 amps?

To get a 40 amps power supply, you will need to use a generator of about 17 kW.
This type of device will be able to supply electricity to an air conditioner of 4 tons.

A generator of such size and capacity is considered one of medium size.
As for the price of such a device, it can reach a value between $3,000 and $8,000.

How many amps does a 22kW generator produce?

Depending on the type of appliance to which this generator is connected, it can produce an electric current with two different amps values.
If connected to a home appliance with a voltage of 220 V, this device can provide an electrical current of 100 amps.

And suppose it is connected to electronic devices with a voltage of 240 V.
In that case, this device can produce an electric current of about 91 amps.

Final Thoughts:

Are you out for an RV trip? Make sure that the food will not spoil during extended blackouts. A generator is your best option to stay comfortable and secure during outages. And your partner to keep your home and family safe and secure during emergencies.

Want to see our guide on finding the best dual fuel options? We have one of those, whether you want to power an 8,000 AC unit or something else. Are you not done reading? You can also check out our guide on wire sizes and cassette toilets. You may need a thicker wire for your electrical needs.

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