Generator Sizing: Why It's Critical for Your 50 Amp RV

craftsman inverter generator

Are you in need of a generator for your 50 amp RV but not sure what size to choose? Choosing the right generator is essential for ensuring that your RV is powered up and ready to go whenever you need it. The rule of thumb is to have a 1500 watts to 4000 watts generator for your rv. But follow along in this blog post as we discuss the importants of rv generators, how to calculate your specific generator size, and provide you with some helpful tips to make your decision easier.

Understanding RV Electrical Systems

Before we dive into the specifics of generators, let's take a moment to understand how RV electrical systems work. An RV electrical system typically has two main components: a 12-volt DC system and a 120-volt AC system. The DC system is used for lighting, water pumps, and other low-power appliances. The AC system is used for larger appliances, such as air conditioning units and microwaves.

Why is a Generator Important for an RV?

While an RV's batteries can power the DC system, the AC system requires a significant amount of power. That's where a generator comes in. A generator is an important component of an RV's electrical system as it provides the necessary power to run larger appliances and charge the RV's batteries.

Factors to Consider When Choosing a Generator for a 50 Amp RV

When choosing a generator for a 50 amp RV, there are several factors to consider. These include:

  1. Power Output - Your generator's power output should be sufficient to power all the appliances in your RV, including the air conditioning unit.

  2. Fuel Type - Generators can run on a variety of fuels, including gasoline, propane, and diesel. Consider which fuel type is most convenient for you.

  3. Noise Level - Generators can be noisy, so consider the noise level of the generator before making your decision.

  4. Price - Generators can be expensive, so consider your budget before making your purchase.

How to Calculate the Right Size Generator for a 50 Amp RV

To determine the right size generator for your 50 amp RV, you'll need to calculate your RV's power requirements. Here's how to do it:

  1. Determine your RV's total power requirements in watts. This information can usually be found in your RV's owner's manual.

  2. Add up the wattage of all the appliances you'll be running simultaneously, including the air conditioning unit, tv, refrigerator, .

  3. Add 20% to the total wattage to account for power surges.

  4. The resulting number is the minimum amount of power output you'll need from your generator.

Top Generators for 50 Amp RVs

Now that you know what factors to consider and how to calculate the right size generator for your 50 amp RV, let's take a look at some of the top generators on the market. Here are three of our favorites:

  1. Honda EU7000iS - This generator is powerful, quiet, and fuel-efficient. It runs on gasoline and can provide up to 7,000 watts of power.

  2. GENMAX Portable Inverter Generator - GENMAX portable inverter generator is a reliable power source that offers 5000 rated watts and 5500 peak watts at less than 3% THD. It features a telescoping handle and a manual/electric start with a 3.9-gallon fuel tank with fuel gauge. With up to 10 hours of run time and a 120/240V volt selector switch, it is perfect for home emergency power supply, campgrounds, construction sites, and power outages. This lightweight and quiet generator produces only 60 decibels of noise and includes a CO detect shutdown sensor for the prevention of carbon monoxide poisoning. GENMAX also provides a 1-year warranty with free lifetime technical support from experts.

  3. BougeRV 1100Wh Portable Power Station - The BougeRV 1100Wh Portable Power Station is a must-have for any outdoor adventure or emergency situation. With a durable aluminum shell and over 10 different ports, including AC outlets and USB ports, this power station can power multiple devices for days on end. The 1200W rated power and 1100Wh capacity are unmatched by many similar products on the market. Plus, its efficient solar charge management and fast recharging capabilities make it a reliable source of power in any situation. Not to mention, its low noise level makes for a peaceful camping experience. With a 12-month warranty and lifetime technical support, BougeRV has got you covered.

Maintenance and Care for Your RV Generator

Once you've chosen the right generator for your 50 amp RV, it's important to take good care of it. Here are some tips for keeping your generator running smoothly:

  • Change the oil regularly.

  • Keep the air filter clean.

  • Use high-quality fuel and add fuel stabilizer if you won't be using the generator for an extended period.

  • Run the generator at least once a month to keep it lubricated and prevent corrosion.

  • Store the generator in a dry, cool place.

Common Appliances and electronics found in rvs

Appliance Power Requirement (Watts)
Air Conditioner 1500-3000
Microwave 1000-1500
Refrigerator 400-600
Electric Stove 1200-2100
Water Heater 1000-1500
TV 100-400
Satellite Dish 30-50
Laptop 50-75
Phone Charger 10-15
Lights 5-20

Options on Amazon

Generator Power Output Fuel Type Noise Level Weight Price
GENMAX GM-3200i 3200W Gasoline 57 DBA with no-load, 62 DBA with 25% load, 68DBA with full load 81.6 lbs $599.99
Champion Power Equipment 200986 4500W Gasoline 61dB 95.7 lbs $807.91
Westinghouse iGen4500 4500W Gasoline 52dB 104.7 lbs $765.00


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Choosing the right generator for your 50 amp RV is crucial for ensuring that you have enough power to run all of your appliances. Consider factors such as power output, fuel type, noise level, and price when making your decision. And remember to calculate your RV's power requirements to determine the right size generator for you.

About Author:

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Hi, I'm Kevin Pommells, a lover of camping and the great outdoors as everyone says nowadays. I'm also a passionate soccer fan and the proud owner of, a website dedicated to helping campers and outdoor enthusiasts make the most of their adventures. With years of experience exploring the wilderness and a deep love for the sport of soccer, I'm always looking for new ways to combine my two passions and share my knowledge with others. Follow me for tips, tricks, and insights on all things camping and outdoor recreation.

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