# What Size Generator for 200 Amp Service? (Quick Answers)

Generators are considered an essential part of household electric supply as it is used to produce electric energy and stored in the battery so that it can directly supply to household appliances. In today’s article, we will discuss what size generator is required for 200 amp service.

## Generator size for 200 amp service

A portable generator that has a power output of 15 to 20 kW will provide you with 200-amp electrical service. Such a type of generator will be able to supply enough power to run all appliances. For high electricity-consuming appliances, you may need a larger generator for more power output.

Electricity consumption has become a common part of our daily life. We need electricity to run our daily life. Appliances such as air conditioners, refrigerators, and televisions.

However, if you are living in a tropical or storm-prone area, you may have faced power outages for a long time.

But some of our home appliances need to be running, even throughout a power outage. Generally, every country has average amperage of electrical service for residential homes.

In the United States, the average electrical service for residential homes ranges between 100 to 200 amps. That is why, if you face significant power outages in your area, you may need a backup generator for running the appliances.

To fulfill the requirements of providing you with 200 amps electrical service you will need a portable generator that will provide 15 to 20 kW of power output. These generators can produce 15,000 to 20,000 watts of electrical power.

It will supply throughout your home and run the appliances. Generally, a 200 amps single phase residential electrical service will be able to handle 48,000 watts of power supply.

That is why adding a portable generator that has a power output of 15,000 to 20,000 watts will not cause an issue. However, to run the large appliances such as the central air conditioning unit, you will need larger generators.

To determine the size of a generator for a 200 amps service, you will need to calculate the electrical consumption of your appliances individually. Below is a brief discussion on how to calculate generator size for 200 amps service:

### How to calculate:

The best way to calculate generator size depending on amp service you need to have a service panel of 200 amps. In addition to that. You can use a 15 to 20 kW generator if you have air conditioning or a large pump.

It is ideal to calculate the power consumption of appliances individually. This will provide you with a proper idea of how much power consumption you need for your household appliances.

Based on that, you can easily choose the right size generator for your 200 amps service. However, you should never have an undersized generator, because that may be harmful to the appliances.

It is always better to have a generator that will provide you with more power compared to your needs so that adding a new appliance does not affect the power consumption of other appliances.

## What can you run on 200 amp service?

You may have faced Frequent power outages and power surges if you are living in a tropical or disaster-prone area. You may need a generator that would provide you with a backup power supply.

In the United States, the average electrical consumption is between 100 to 200 amps. Considering that, you can easily use a portable generator that will provide you with a power output of 15 to 20 kW.

You can easily run most of the appliances using such a type of generator. In addition to that, most homes in the United States have a single-phase electrical service that can balance the power supply up to 48,000 watts.

But, to run larger appliances such as the central air conditioning unit, you may require a larger generator. But, 15kW to 20kW should be able to run all the standard regular appliances.

In addition to that, most of the 200 amps panels have 40 breaker slots but can accept more circuits than tendon breakers, so it will be easier for you to install more appliances when you use a generator.

## Factors to consider for choosing generator size:

Generators are considered unnecessary backup power supply appliances that are required if you are living in a disaster-prone area. Because you may see frequent power outages and power surges.

Some household appliances such as refrigerators need to run smoothly to maintain the quality of food stored inside. Therefore, if there is load shedding in your home, with a generator backup, you can easily keep all the important home appliances.

In most cases, the average electrical service ranges between 100 to 200 amps. Butterfly will not be an issue if you choose to have a 15-to-20-kilowatt power generating generator as a backup power supply.

You will also need to consider the type of electrical service that you are using before installing a generator.

In most cases, the people tend to have 200 amps single phase residential electrical service that can easily handle 48,000 watts of power supply.

Experts recommend having an overpowered generator, that will be efficient and convenient for you.

Because in case of an emergency, if you need to add another appliance with the generator power supply, it can still provide you with uninterrupted services. Some factors need to be considered before choosing the right-sized generator.

Below is a brief discussion on a few factors to consider when choosing generator size:

### Appliances:

To ensure an uninterrupted power supply with the generator, you need to consider the number of appliances and their power consumption so that you can figure out what size generator you will need.

### Performance and longevity:

One of the most important but you need to consider before having performance and the longevity of the generator. This will help to provide an uninterrupted power supply during a power outage.

### Maintenance cost:

Since the generator has to provide you with a frequent power supply during a power outage, it will need very frequent maintenance as well. That is why you need to make sure that the maintenance cost is convenient.

Considering the load capacity of your generator is one of the most important parts that you need to keep in mind, before having a generator.

It is highly recommended as per the electrical code that you used 80% of the service load for safety reasons.

That is why you should not have an underpowered generator to run all the appliances.

## What happens if you undersize or oversize a generator?

The generator is considered a power supply appliance that will provide you with an uninterrupted power supply during a power outage or long-term power surge. It is a highly convenient and efficient appliance that every household should have.

It will provide you with an emergency power supply when your appliances need to be run seamlessly.

There are many different types of generators available in the market. For a 200 amps power service, you can switch to a portable generator that you can easily transport anywhere.

So, a portable generator can provide you with 15 to 20 kW of power supply that can produce 15,000 to 20000 watts of electricity.

As a result, it will be able to run almost all the standard appliances of your house, such as the fans, light bulbs, water pumps, and even the refrigerator.

However, it is always recommended for you to have an oversized generator so that if you add another appliance, it can still provide you uninterrupted power supply

Having an undersized generator will cause problems when generating power and distributing them among all the appliances. It will put a lot of pressure on the generator and can easily cause the generator to start aging.

## Will a 20kw generator run my whole house?

Since the generator is considered an emergency backup power supply, it should be available in every household. If you are living in a disaster-prone area, you should have a generator that will be able to provide you with a seamless power supply.

That is why you can opt for a 15 to 20 Watt portable generator that will provide you with an uninterrupted power supply and will be able to run all the standard appliances of your home.

You can easily run all standard electrical appliances for a typical family such as the fans, television, refrigerator, water pumps, etc.

Your house consists of larger appliances, such as the central air conditioning unit. You will need a larger generator. But in most cases, a 20KW generator can run the whole house. And it’s standard appliances.

## Final Thoughts

The generator is considered an emergency backup power supply. So, if you are living in a disaster-prone area, you can easily opt for a 20KW generator for 200 amps power supply electrical service. But for larger appliances such as the central air conditioner, you may need a larger generator.