The ideal generator size for a small travel trailer typically ranges from 2000 to 3500 watts, providing enough power to run essential appliances like the air conditioner, microwave, and refrigerator. Careful calculation of your specific power needs is crucial to avoid overspending on an unnecessarily large generator or underpowering your necessities.
Understanding Your Power Needs
Before diving into specific generator models, understanding your individual power requirements is paramount. Every appliance in your RV draws a certain amount of power, measured in watts. This information is usually found on the appliance’s label or in its user manual.
Calculating Your Wattage Requirements
- Identify Appliances: List all the appliances you plan to use while camping. Include the air conditioner, refrigerator, microwave, lights, TV, coffee maker, and any other electronic devices.
- Find Wattage Information: Locate the wattage rating for each appliance. Pay close attention to the starting wattage for appliances with motors, like the air conditioner. This is the power surge required when the appliance first turns on and is often significantly higher than the running wattage.
- Calculate Total Wattage: Add up the running wattage of all the appliances you plan to use simultaneously. Then, add the highest starting wattage of any single appliance (usually the air conditioner). This total represents your peak wattage demand.
For example:
- Air Conditioner (Starting): 2200 watts
- Air Conditioner (Running): 1500 watts
- Refrigerator: 200 watts
- Microwave: 1000 watts
- Lights: 100 watts
- Total Running Watts (excluding A/C): 1300 watts
- Total Peak Watts: 1300 + 2200 = 3500 watts
In this scenario, you’d need a generator that can handle at least 3500 watts. It’s always wise to add a buffer of 10-20% to account for fluctuations and unexpected power draws.
Generator Types: Inverter vs. Conventional
Choosing between an inverter generator and a conventional generator is another important consideration.
Inverter Generators
Inverter generators are generally more expensive but offer several advantages for travel trailer owners. They produce cleaner power, making them safe for sensitive electronics like laptops and smartphones. They are also typically quieter and more fuel-efficient than conventional generators. Inverter generators often feature parallel capability, allowing you to connect two generators for increased power output.
Conventional Generators
Conventional generators are often more affordable but can be noisier and produce less stable power. They are generally heavier and less fuel-efficient than inverter models. While they can power most RV appliances, they may not be the best choice if you rely heavily on sensitive electronic devices.
Important Generator Features
Beyond wattage and type, consider these features when choosing a generator:
- Noise Level: Look for generators with a low decibel (dB) rating. Noise can be a significant factor, especially in campgrounds.
- Fuel Efficiency: Check the generator’s fuel consumption rate to estimate how long it will run on a single tank of gas.
- Portability: Consider the generator’s weight and size. You’ll need to be able to transport and store it easily.
- Starting Mechanism: Electric start is more convenient than recoil start, but it adds to the cost.
- Safety Features: Look for features like low-oil shutdown and overload protection.
- Outlets: Ensure the generator has the necessary outlets to connect your RV’s power cord and other devices. Specifically, a 30-amp RV outlet is critical.
Recommended Generator Sizes for Different Trailer Types
- Pop-Up Campers & Small Travel Trailers (Under 20ft): 2000 – 2500 watts is often sufficient.
- Mid-Sized Travel Trailers (20-25ft): 2500 – 3000 watts is generally recommended.
- Larger Travel Trailers (Over 25ft): 3000 – 3500 watts or more may be needed, especially with multiple appliances and a larger air conditioner.
Remember to always calculate your specific power needs to ensure you choose the right size generator for your travel trailer.
Frequently Asked Questions (FAQs)
Q1: Can I use a regular extension cord to connect my generator to my RV?
No, you should never use a regular extension cord to connect your generator to your RV. Always use a heavy-duty RV extension cord that is specifically designed for high-amperage connections. This ensures safety and prevents overheating. Use the correct gauge wire for the amperage.
Q2: What is the difference between starting watts and running watts?
Starting watts (also known as surge watts) are the power required to start an appliance’s motor, while running watts are the power required to keep it running continuously. Starting watts are typically higher.
Q3: How often should I service my generator?
Refer to your generator’s owner’s manual for specific maintenance schedules. Generally, you should change the oil every 50-100 hours of operation and perform regular inspections of the air filter, spark plug, and fuel lines. Preventative maintenance is key to longevity.
Q4: Can I run my generator inside my travel trailer?
Absolutely not! Generators produce carbon monoxide, a deadly, odorless gas. Always operate your generator outdoors in a well-ventilated area, away from windows and doors. Install a carbon monoxide detector in your travel trailer and check it regularly.
Q5: What is the best way to store my generator when not in use?
Drain the fuel tank and carburetor before storing your generator for extended periods. This prevents fuel from gumming up and causing starting problems. Store the generator in a dry, protected location. Adding a fuel stabilizer is highly recommended.
Q6: Are there any quiet generators that are powerful enough for an RV?
Yes, inverter generators are generally much quieter than conventional generators. Look for models with a decibel rating of 60 dB or lower. Some models even feature “quiet mode” or “eco mode” which further reduces noise and fuel consumption.
Q7: What size generator do I need to run my RV air conditioner?
The air conditioner is typically the most power-hungry appliance in an RV. Most RV air conditioners require at least 2200 starting watts and 1500 running watts. Check the specifications of your specific air conditioner model to determine its power requirements.
Q8: Can I use my generator to charge my RV batteries?
Yes, you can use your generator to charge your RV batteries through the RV’s converter. The converter takes AC power from the generator and converts it to DC power to charge the batteries. Make sure your generator provides enough power to run the converter and any other appliances you plan to use simultaneously.
Q9: What is parallel capability and is it important?
Parallel capability allows you to connect two compatible generators together to increase the total power output. This can be useful if you need more power than a single generator can provide, or if you want to have a backup generator on hand.
Q10: What is an RV-ready generator?
An RV-ready generator typically includes features like a 30-amp RV outlet, which allows you to directly connect your RV’s power cord without the need for adapters. It may also have other convenient features like an electric start and remote control.
Q11: What is THD, and why does it matter for generators used with RVs?
THD, or Total Harmonic Distortion, measures the purity of the AC power produced by a generator. Lower THD percentages are better, indicating cleaner power. Inverter generators generally have very low THD, making them safe for sensitive electronics.
Q12: What are some reputable generator brands for travel trailers?
Some reputable generator brands for travel trailers include Honda, Yamaha, Generac, Westinghouse, and Champion. Research and compare models from these brands to find the best fit for your needs and budget. Look for user reviews and professional ratings to get a sense of the generator’s reliability and performance.