Owning a 50-amp RV brings the freedom to explore the outdoors with all the comforts of home. However, to keep all the appliances, electronics, and HVAC systems running smoothly, you’ll need a properly sized generator. Choosing the right generator size can be a daunting task with various wattage requirements and different power needs for RV setups. In this article, we’ll explore the generator size needed for a 50-amp RV and provide you with expert insights to help you make an informed decision. From understanding the power requirements to selecting the right generator type, this guide will ensure you have the ideal solution for your RV adventures.
Understanding 50 Amp RV Power Needs
To determine the correct generator size for a 50-amp RV, it’s essential to understand your RV’s power requirements. A 50-amp RV setup offers significant power, allowing you to run multiple appliances simultaneously, from air conditioners to microwaves.
How Much Power Does a 50 Amp RV Need?
A 50-amp RV system can provide up to 12,000 watts of power when operating at full capacity. This is because a 50-amp service runs on two 120-volt legs, with each leg providing 50 amps. To calculate the total wattage, use the formula:
Amps x Volts = Watts
In this case:
50 amps x 120 volts = 6,000 watts per leg
Therefore, a 50-amp RV setup can handle 12,000 watts total across both legs.
Typical Power Consumption in a 50 Amp RV
It’s important to consider the power consumption of various appliances and systems inside your RV. The following is a breakdown of typical power usage in a 50-amp RV:
- Air Conditioner: 2,000 – 3,500 watts
- Microwave: 800 – 1,500 watts
- Refrigerator: 600 – 800 watts
- Water Heater: 1,200 – 1,500 watts
- Lighting: 100 – 300 watts (depending on the number of lights)
- Entertainment Systems: 300 – 500 watts (TVs, sound systems, etc.)
Given the variety of power-hungry devices, it’s clear that you’ll need a generator capable of handling a significant load to keep your 50-amp RV running smoothly.
How to Choose the Right Generator Size for a 50 Amp RV
Now that we’ve covered the basics of RV power consumption, let’s discuss how to select the appropriate generator size. The ideal generator size will depend on several factors, including the total wattage required and whether you’ll be using your generator for occasional or continuous use.
What Wattage Should Your Generator Have?
For a 50-amp RV, you should look for a generator with a minimum wattage capacity of 6,000 watts, as each leg of your RV’s electrical system will need to be powered. However, for larger RVs with additional power needs, a generator with a capacity between 7,000 and 12,000 watts is recommended. This ensures you have enough power to run multiple appliances and systems simultaneously without overloading the generator.
Surge vs. Running Watts
When selecting a generator, it’s important to distinguish between running watts and surge (starting) watts.
- Running watts represent the continuous power output needed to run appliances.
- Surge watts refer to the additional wattage required to start appliances with electric motors, such as air conditioners or refrigerators.
A generator should have sufficient surge capacity to handle the initial startup of larger appliances without exceeding its limits. For example, if your air conditioner requires 3,000 surge watts to start but only 1,500 running watts to operate, you’ll need a generator that can handle both the surge and running wattages.
Consider Fuel Type
Different generators run on various fuel types, and your fuel choice can impact the generator’s runtime, efficiency, and convenience. The three main fuel types for RV generators are gasoline, propane, and diesel. Each has its pros and cons.
- Gasoline Generators: These are commonly available and typically less expensive. However, gasoline can be harder to store long-term, and generators running on gas tend to require more maintenance.
- Propane Generators: Propane burns cleaner than gasoline, making it environmentally friendly and easier on the generator’s engine. However, propane tanks take up more space, and the runtime per gallon is generally shorter.
- Diesel Generators: Diesel generators are highly efficient and durable. If your RV already runs on diesel, this is a convenient option. Diesel also stores better over time. However, diesel generators can be pricier upfront.
Consider your RV’s fuel setup and how easy it is to access fuel on the road when making your decision.
Best Generator Types for 50 Amp RVs
Once you have a general idea of the wattage and fuel type you need, you can explore the different types of generators best suited for a 50-amp RV.
Inverter Generators
Inverter generators are a popular choice for RV owners due to their fuel efficiency, quiet operation, and ability to produce clean power. Clean power means the electricity they generate is stable and safe for sensitive electronics such as smartphones, laptops, and RV appliances. These generators adjust engine speed based on power demand, which can significantly reduce fuel consumption.
While inverter generators tend to be more expensive than conventional models, their benefits often outweigh the higher cost, especially for RV users who prioritize quietness and portability.
Conventional Generators
Conventional generators provide more raw power and are typically less expensive than inverter models. However, they are bulkier, louder, and less fuel-efficient. They may also produce unstable power, which could potentially damage sensitive electronic devices.
These generators are best suited for RVers who need a high wattage capacity but don’t mind the additional noise or size.
Dual Fuel Generators
Dual-fuel generators are designed to run on both gasoline and propane, offering flexibility for RV users who may want to switch between fuel sources. This versatility can be advantageous when traveling to remote locations where one type of fuel may not be readily available.
While dual-fuel generators are slightly more expensive than single-fuel models, the flexibility they offer can be invaluable for long trips or full-time RV living.
Generator Sizing Calculation: How to Find the Right Size
Determining the right generator size for your 50-amp RV can be done through a simple calculation. First, estimate the total wattage your RV requires by adding up the running watts of each appliance you plan to use simultaneously. Then, factor in the surge watts needed for appliances with electric motors.
Example Calculation
Assume you have the following appliances running in your RV:
- Air conditioner: 2,500 watts (surge), 1,500 watts (running)
- Refrigerator: 800 watts (surge), 600 watts (running)
- Microwave: 1,000 watts (running)
- Lighting: 300 watts (running)
To calculate the total wattage needed:
- Air conditioner surge: 2,500 watts
- Refrigerator surge: 800 watts
- Microwave running: 1,000 watts
- Lighting running: 300 watts
Total required surge watts = 2,500 + 800 = 3,300 watts
Total required running watts = 1,500 + 600 + 1,000 + 300 = 3,400 watts
In this case, you would need a generator capable of handling at least 3,300 surge watts and 3,400 running watts. A generator with a capacity of 7,000 watts or more would be ideal, providing enough overhead to handle additional appliances and avoid overloading.
Can You Use Two Smaller Generators in Parallel?
For RVers who may not want to invest in a large, heavy generator, an alternative option is to use two smaller parallel-capable generators. Many inverter generators can be paired together to provide a higher wattage output without the bulk of a single large unit.
This setup can be advantageous for RVers who prioritize portability and flexibility. For example, two 2,500-watt inverter generators connected in parallel can deliver a combined 5,000 watts, offering enough power for most RV setups. This approach also allows you to run only one generator when power demands are lower, conserving fuel.
see also: How Long Does Diesel Last in a Generator?
Conclusion
Selecting the right generator size for your 50-amp RV is crucial for ensuring reliable power on the road. With a thorough understanding of your RV’s power requirements, you can choose a generator that meets your specific needs, whether it’s an inverter, dual-fuel, or conventional model. A generator with a capacity of 7,000 to 12,000 watts is ideal for most 50-amp RVs, providing sufficient power for running multiple appliances simultaneously. Additionally, consider fuel type, portability, and whether you want the flexibility of running two smaller generators in parallel. With the right generator, your RV experience will be more comfortable, efficient, and enjoyable.
FAQs:
What happens if I use a generator that’s too small for my 50-amp RV?
Using an undersized generator can lead to power overloads, causing the generator to shut down or fail. It may also damage sensitive electronics due to insufficient power.
How long can a generator run continuously on a 50-amp RV?
The runtime of a generator depends on its fuel capacity and load. A generator operating at 50-75% load can run for 8-12 hours on a full tank, but dual-fuel options may offer extended runtime on propane.
Do I need a transfer switch to connect my generator to my RV?
Yes, a transfer switch is essential for safely connecting your generator to your RV’s electrical system. It prevents back-feeding into the grid and ensures a seamless switch between shore power and generator power.
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