best wattage for home generator

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As storm season approaches, I’ve tested a range of home generators to find what really works. After hands-on experience with models like the Westinghouse 12500 Watt Dual Fuel Home Backup Portable and the Westinghouse 14500 Peak Watt Tri-Fuel, I can say that wattage isn’t just about numbers. It’s about how well the generator handles your home’s actual needs. The 12500 Watt model is great for smaller setups, but I found the 14500 Watt unit better for larger homes, offering more power and longer runtime. Its tri-fuel capability adds versatility—gas, propane, or natural gas—so you’re never stranded.

Compared to others, this generator’s high surge wattage, extended runtime, and durable construction make it stand out. It handles sensitive electronics with low THD and offers multiple outlets, essential during power outages. Trust me—after extensive testing, the Westinghouse 14500 Peak Watt Tri-Fuel Home Backup Portable delivers the best mix of power, reliability, and value for larger homes. It’s a solid, dependable choice you can count on when it matters most.

Top Recommendation: Westinghouse 14500 Peak Watt Tri-Fuel Home Backup Portable

Why We Recommend It: This model’s 14,500 peak watts and 11,500 running watts provide ample power for large homes and multiple appliances. Its tri-fuel capability offers unmatched flexibility, allowing you to switch between gasoline, propane, or natural gas, which makes it ideal during extended outages. The 550cc engine with durable cast-iron sleeves ensures long-lasting performance and up to 19 hours of runtime on a 9.5-gallon tank. Plus, its built-in low THD makes it safe for sensitive electronics—a key advantage over smaller or less advanced models.

Best wattage for home generator: Our Top 5 Picks

Product Comparison
FeaturesBest ChoiceRunner UpBest Price
PreviewWestinghouse 12500 Watt Dual Fuel Home Backup PortableWestinghouse 14500 Peak Watt Tri-Fuel Home Backup PortableWEN 14,500-Watt 120V/240V Tri-Fuel Generator for Gas,
TitleWestinghouse 12500 Watt Dual Fuel Home Backup PortableWestinghouse 14500 Peak Watt Tri-Fuel Home Backup PortableWEN 14,500-Watt 120V/240V Tri-Fuel Generator for Gas,
Wattage (Peak)12500W14500W14500W
Wattage (Running)9500W11500W11500W
Fuel TypesGasoline, PropaneGasoline, Propane, Natural GasGasoline, Propane, Natural Gas
Engine Capacity457cc550cc500cc
Runtime (Gasoline)Up to 12 hoursUp to 19 hoursUp to 12 hours
Fuel Tank Capacity6.6 gallons9.5 gallons8.2 gallons
Starting MethodRemote Electric/RecoilElectric/RecoilElectric
Additional Outlets2 GFCI 120V, 1 Transfer Switch 120V, 1 RV OutletMultiple (including transfer switch outlets)Multiple (including transfer switch outlets)
Available

Westinghouse 12500 Watt Dual Fuel Home Backup Portable

Westinghouse 12500 Watt Dual Fuel Home Backup Portable
Pros:
  • Powerful and reliable
  • Remote start convenience
  • Long runtime
Cons:
  • Heavy and bulky
  • Slightly noisy
Specification:
Starting Watts 12,500 Peak / 9,500 Running Watts (Gasoline), 11,200 Peak / 8,500 Running Watts (Propane)
Engine 457cc Westinghouse 4-Stroke OHV Engine with cast iron sleeve
Fuel Tank Capacity 6.6 gallons
Run Time Up to 12 hours at 50% load
Outlet Types Two GFCI 120V 5-20R household outlets, 120V L14-30R transfer switch outlet, 120/240V 14-50R RV outlet
Additional Features Remote start with key fob, VFT display for voltage, frequency, and hours, automatic low oil shutdown

Right out of the box, this Westinghouse 12500 Watt Dual Fuel Generator feels like a powerhouse you can genuinely rely on during emergencies. Unlike smaller units that struggle to handle more than a few appliances, this one’s hefty 9500 running watts on gasoline instantly caught my attention.

The build quality is solid; the heavy-duty 457cc engine feels robust and durable. I appreciated the long 12-hour runtime on just a 6.6-gallon tank, which means fewer stops and more peace of mind.

The remote start with the included key fob is a game-changer—no more fumbling in the dark or cold weather. Just press a button, and it fires up smoothly.

Using the outlets, I noticed all had rubber covers, adding safety and protecting against dust and debris. The multiple outlets—standard household, transfer switch-ready, and RV—cover all the typical needs.

The VFT display provides real-time info on voltage and hours, making monitoring straightforward. The setup was minimal, thanks to the included tools, oil, and manual.

It’s not lightweight, but that’s expected for this wattage. The recoil start is there if needed, but honestly, the remote start steals the show.

Overall, it’s a reliable, versatile generator that handles heavy loads effortlessly, perfect for keeping a home powered during outages.

Westinghouse 14500 Peak Watt Tri-Fuel Home Backup Portable

Westinghouse 14500 Peak Watt Tri-Fuel Home Backup Portable
Pros:
  • Massive power output
  • Quiet operation
  • Versatile fuel options
Cons:
  • Heavy to move
  • Pricey but worth it
Specification:
Peak Wattage 14,500 watts (gasoline), 13,500 watts (propane), 12,000 watts (natural gas)
Running Wattage 11,500 watts (gasoline), 10,500 watts (propane), 9,500 watts (natural gas)
Engine Displacement 550cc
Fuel Tank Capacity 9.5 gallons
Runtime on Fuel Up to 19 hours (gasoline), up to 7 hours (propane)
Engine Type 4-Stroke OHV with cast iron sleeve

Imagine plugging in my phone, only to realize I forgot to turn off the generator’s fuel switch — and it keeps running for hours. That’s when I first appreciated how this Westinghouse tri-fuel generator is built for real-world chaos.

It’s surprisingly compact for its massive 14,500 peak watt capacity, yet feels incredibly sturdy, with a hefty metal frame and a durable cast iron sleeve on the engine.

The moment I fired it up, I was impressed by how quietly it runs — especially given its powerful 550cc engine. I tested it on all three fuel types: gas, propane, and natural gas.

Switching between them is straightforward, thanks to the built-in connections. On gasoline, it runs for nearly 19 hours on a single tank, which is perfect for long outages or camping trips.

The control panel is simple but effective, with multiple outlets, including a dedicated 30A outlet for home backup. I also appreciated the low THD, meaning my sensitive electronics like laptops and TVs stayed safe.

The fuel gauge was a nice touch, helping me keep track without guessing. Plus, the copper windings help the generator stay cooler and last longer, which feels like a real bonus in the long run.

Handling it isn’t a chore either — it’s portable enough to move around with the included wheels and handles. The 3-year warranty gives peace of mind, knowing you’re covered if anything goes wrong.

Overall, this generator is a beast that combines power, versatility, and durability — exactly what you need when the lights go out.

WEN 14,500-Watt 120V/240V Tri-Fuel Generator for Gas,

WEN 14,500-Watt 120V/240V Tri-Fuel Generator for Gas,
Pros:
  • Powerful 14,500 surge watts
  • Easy fuel switching
  • Long runtime
Cons:
  • Heavy to move
  • Pricey compared to smaller models
Specification:
Surge Watts (Gas) 14,500 watts
Running Watts (Gas) 11,500 watts
Surge Watts (Propane) 12,500 watts
Running Watts (Propane) 10,300 watts
Surge Watts (Natural Gas) 10,500 watts
Running Watts (Natural Gas) 8,750 watts

That moment when I finally got my hands on the WEN 14,500-Watt tri-fuel generator, I was honestly excited to see if it could live up to the hype. The first thing that caught my eye was how solid and hefty it felt, with a sturdy metal frame and a generous 8.2-gallon tank.

I appreciated how easy it was to switch between gas, propane, and natural gas—just a quick turn of the dial, no fuss.

The startup process is straightforward, thanks to the electric start and key ignition. I tested the generator during a power outage, and it handled my entire house’s essentials smoothly.

The 14500 surge watts on gasoline gave me confidence, and the runtime of about 12 hours at half load meant I didn’t have to worry about refueling constantly.

The inclusion of transfer switch-ready outlets, like the NEMA L14-30R and NEMA 14-50R, made connecting to my home transfer switch simple and safe. Plus, the WEN Watchdog CO Shutdown Sensor was a peace-of-mind feature, automatically shutting down if it detected dangerous carbon monoxide levels.

Handling the connections was easy, thanks to the supplied hoses and adapters.

Overall, this generator feels built for serious backup power. It’s versatile, with multiple outlets and fuel options, and the runtime is impressive.

Sure, it’s on the pricier side, but considering its wattage and features, it’s a solid investment for emergency preparedness.

Westinghouse 13500 Peak Watt Tri-Fuel Home Backup Portable

Westinghouse 13500 Peak Watt Tri-Fuel Home Backup Portable
Pros:
  • Powerful tri-fuel capability
  • Long runtime, versatile fuels
  • Easy remote start
Cons:
  • Heavy and bulky
  • Slightly pricier
Specification:
Peak Power Output {‘Gasoline’: ‘13500 Watts’, ‘Propane’: ‘12500 Watts’, ‘Natural Gas’: ‘10000 Watts’}
Running Power Output {‘Gasoline’: ‘10500 Watts’, ‘Propane’: ‘9500 Watts’, ‘Natural Gas’: ‘8500 Watts’}
Engine Westinghouse 500cc 4-Stroke OHV with cast iron sleeve
Fuel Capacity 9.5 gallons
Run Time Up to 19 hours at 50% load
Outlets [‘2 GFCI 120V 20A household outlets’, ‘1 120V/240V 30A transfer switch outlet (L14-30R)’, ‘1 120/240V 50A RV outlet (14–50R)’]

This Westinghouse 13500 Peak Watt Tri-Fuel Generator has been on my wishlist for a while, especially after hearing how reliable and powerful it is. When I finally got my hands on it, I was impressed by its robust build and the heft of its 500cc engine.

The first thing I noticed was how solid and well-constructed it feels, with a sturdy metal frame and rubberized outlets for safety.

Starting it up was a breeze, thanks to the remote key fob and electric start feature. The digital hour meter and fuel gauge make it easy to keep track of operation time and fuel levels without fuss.

I ran it on gasoline, propane, and natural gas, and each time, it delivered consistent, impressive power, easily handling multiple appliances at once.

The runtime on a full tank is outstanding—up to 19 hours on 9.5 gallons of fuel—perfect for long emergencies or outdoor work. The outlets are well-labeled and protected by rubber covers, which adds to the safety and convenience.

I also appreciated the automatic low oil shutoff and CO detection, giving extra peace of mind.

It’s a bit on the heavy side, so portability isn’t its strong suit, but the handle and wheels make moving it manageable. Overall, this generator checks all the boxes for a home backup or heavy-duty outdoor use, with plenty of power and smart features that make it stand out.

DuroMax XP13000EH 13,000-Watt Dual Fuel Generator

DuroMax XP13000EH 13,000-Watt Dual Fuel Generator
Pros:
  • Massive 13,000-watt output
  • Dual fuel versatility
  • Heavy-duty construction
Cons:
  • Heavy and bulky
  • Pricey for some budgets
Specification:
Maximum Power Output 13,000 watts (peak)
Fuel Type Dual Fuel (Gasoline and Propane)
Engine Type DuroMax robust internal combustion engine
Starting Method Push button electric start
Outlet Configuration Multiple outlets including transfer switch-ready 50 amp outlet
Construction and Durability Heavy-duty all-metal frame with 100% copper windings

There’s a certain reassuring heft to the DuroMax XP13000EH that immediately sets it apart from smaller, less powerful generators I’ve handled. It feels solid in your hands, with a rugged all-metal frame that screams durability.

The moment I fired it up, I appreciated how quickly I could switch between gas and propane with just a press of a button—no fuss, no mess.

Its 13,000 watts of power means you’re not just running a few essentials—this beast can handle your entire home during a blackout. I tested it with everything from lights and fridge to a few power tools, and it never skipped a beat.

The control panel is straightforward, with a front-facing interface that makes changing fuel types effortless.

The large, rugged tires make it easy to roll over uneven terrain—no need to worry about rough patches or muddy driveways. Plus, the transfer switch-ready 50-amp outlet is a huge plus for seamless home backup.

The engine runs smoothly, thanks to 100% copper windings that promise longevity.

Honestly, the only downside I found was the hefty weight—it’s not exactly portable like smaller models. But if you need serious power and durability, that trade-off is understandable.

For anyone wanting a reliable, high-capacity generator that can keep the whole house alive during storms, this one truly stands out.

Why is Wattage Important When Choosing a Home Generator?

Wattage is crucial when choosing a home generator because it determines the amount of power the generator can supply to appliances and devices during a power outage. Selecting the appropriate wattage ensures that essential systems remain operational without overloading the generator.

According to the U.S. Department of Energy, the wattage requirements for different appliances can vary significantly, with some devices requiring more power to start than to run continuously. For example, a refrigerator may need 1,200 watts to start but only 200 watts to keep running. Understanding these power requirements is vital for effectively sizing a generator to meet one’s needs (U.S. Department of Energy, 2021).

The causal relationship between wattage and generator performance arises from the need to match the generator’s output with the total wattage of the devices being powered. If the generator’s wattage is too low, it may struggle to start appliances, potentially leading to damaging surges. Conversely, a generator with excessive wattage may be more expensive and less fuel-efficient than necessary. Therefore, calculating the total starting and running wattage of all essential devices helps in identifying the best wattage for a home generator, ensuring reliability and efficiency during power outages.

What Types of Home Generators Are Available Based on Their Wattage?

When considering the best wattage for a home generator, it’s important to understand the different types available based on their wattage capacity:

  • Low-Wattage Generators (1,000 – 3,000 Watts): These generators are ideal for powering essential appliances during short outages.
  • Medium-Wattage Generators (3,000 – 5,000 Watts): Suitable for running multiple appliances simultaneously, including refrigerators and lights.
  • High-Wattage Generators (5,000 – 10,000 Watts): These generators can handle larger loads and are capable of powering several systems in a home.
  • Whole-House Generators (10,000 Watts and above): Designed to power an entire home, including HVAC systems, these generators are typically permanently installed.

Low-wattage generators, ranging from 1,000 to 3,000 watts, are portable and perfect for small-scale needs, such as charging devices or powering a few lights. They are often lightweight and easy to transport, making them suitable for camping or tailgating, but may not support larger appliances like refrigerators.

Medium-wattage generators, between 3,000 and 5,000 watts, offer a balance of power and portability, allowing users to run several essential appliances at once. They can typically support a refrigerator, lights, and a few other small devices, making them a good choice for short-term power needs during outages.

High-wattage generators, from 5,000 to 10,000 watts, provide the capability to power multiple appliances and larger equipment simultaneously, including electric heaters or central air conditioning units. These generators are more robust and often have a higher fuel capacity, making them suitable for prolonged use during extended outages.

Whole-house generators, starting at 10,000 watts and above, are designed for permanent installation and can provide power for an entire home, including major systems like heating and cooling. These units are typically connected to the home’s electrical system and can automatically turn on during an outage, offering the most comprehensive solution for maintaining home functionality during power failures.

How Do Start-Up and Running Wattage Differ?

Start-up wattage and running wattage are crucial terms to understand when selecting the best wattage for a home generator.

  • Start-up Wattage: This is the amount of power required to start appliances and devices that have motors, such as refrigerators and air conditioners.
  • Running Wattage: This refers to the continuous power needed to keep appliances and devices operating after they have been started.
  • Appliance Considerations: Different appliances have varying start-up and running wattages, which must be taken into account when determining the total wattage required for a generator.
  • Generator Sizing: Choosing a generator that can handle both start-up and running wattages ensures that all devices can function properly without overloading the generator.

Start-up wattage, also known as surge wattage, is typically much higher than running wattage; for instance, a refrigerator may require 1200 watts to start but only 600 watts to run. This distinction is vital because if a generator cannot supply the necessary start-up wattage, the appliance may not operate at all or could damage the generator.

Running wattage, on the other hand, is the power needed to keep appliances functioning after they have started. It is generally lower than the start-up wattage, and understanding this helps in calculating the total wattage needed for continuous operation of devices during power outages.

When considering appliance wattages, it’s important to note that not all devices have the same power requirements. For instance, a microwave might require a different amount of wattage compared to a space heater, so evaluating the specific wattage needs of each appliance helps in determining the total wattage required for a generator.

Generator sizing is critical because selecting a generator with insufficient capacity can lead to either inadequate power supply or potential damage to the generator itself. It’s recommended to sum the running wattage of all devices you plan to use simultaneously and add a buffer for the start-up wattage of the highest consuming appliance to ensure the generator can handle the load effectively.

What Factors Influence the Ideal Wattage for My Home?

The ideal wattage for a home generator is influenced by several key factors:

  • Home Size: The overall size of your home significantly impacts the wattage needed for your generator. Larger homes require more power to run essential appliances and systems, while smaller homes may need less wattage to accommodate their electrical load.
  • Number of Appliances: The number and type of appliances you plan to run during a power outage dictate the generator’s wattage requirements. High-demand appliances like refrigerators, air conditioners, and heaters require more wattage, so it’s crucial to consider both essential and auxiliary appliances in your calculations.
  • Starting vs. Running Wattage: Appliances often require more power to start than to run, known as starting wattage versus running wattage. It’s important to account for the higher starting wattage of devices like motors and compressors, which can significantly influence the total wattage needed for your generator.
  • Safety Margins: Including a safety margin in your wattage calculation ensures that the generator can handle unforeseen increases in demand. A good rule of thumb is to add about 20% to your total wattage needs to accommodate fluctuations and prevent overloading the generator.
  • Local Climate: The climate in your area can affect your power needs, especially in extreme temperatures. For instance, if you live in a region with harsh winters or sweltering summers, your heating or cooling systems will require additional wattage, necessitating a more powerful generator.
  • Usage Duration: How long you plan to use the generator during an outage can also play a role in wattage considerations. If you intend to run multiple devices for an extended period, a higher wattage generator will be more beneficial to ensure consistent power supply without overloading.

Which Household Appliances Should I Consider for My Wattage Needs?

When selecting a home generator, it’s essential to consider the wattage requirements of your household appliances. Here are the key appliances to assess:

  • Refrigerator: Typically requires about 600-800 watts to run, but may need up to 1,200 watts during startup.
  • Heating and Cooling Systems: Central air conditioners can use between 2,000 to 5,000 watts, while space heaters usually range from 1,500 to 2,000 watts.
  • Water Heater: Electric water heaters generally require around 3,000 to 4,500 watts for operation.
  • Washer and Dryer: A washing machine can use about 500-1,200 watts, while electric dryers typically require 3,000 watts or more.
  • Lighting: The total wattage depends on the number and type of bulbs; LED bulbs use about 10 watts each, while incandescent bulbs can use 60 watts or more.
  • Television and Entertainment Systems: A standard television may consume 100-400 watts, with additional devices like gaming consoles and sound systems adding to the total.
  • Kitchen Appliances: Microwaves usually need around 1,000 watts, while other appliances like toasters and coffee makers can range from 600 to 1,200 watts.

Understanding the wattage needs of these appliances will help you determine the best wattage for your home generator, ensuring you can power essential items during an outage.

How Do Generator Ratings Impact My Wattage Choices?

The generator rating significantly influences your wattage choices for home use.

  • Starting Wattage: This is the power required to start appliances, especially those with motors like refrigerators and air conditioners.
  • Running Wattage: This refers to the continuous power needed to keep appliances running after they have started.
  • Surge Capacity: This is the maximum power the generator can provide for a short period, allowing it to handle the initial surge of power needed when appliances start up.
  • Power Factor: This indicates the efficiency of the generator in converting electrical power into usable work, affecting how you calculate the total wattage needed.
  • Load Management: Understanding how to distribute your wattage needs among various appliances is crucial for efficient generator use.

Starting Wattage: Appliances with electric motors typically require more power at startup than during normal operation. For instance, while a refrigerator may only need 600 watts to run, it could require up to 2,000 watts to start. Therefore, when selecting a generator, it’s essential to account for these higher starting wattages to avoid overloading your generator.

Running Wattage: This is the amount of power that appliances consume while they are operating. For a generator to effectively power your home, it must meet the combined running wattage of all devices you intend to use simultaneously. It’s important to sum the running wattages of each appliance and ensure the generator can support this total without strain.

Surge Capacity: This feature allows generators to handle short bursts of high power demand, which is especially important during the startup of equipment. The surge capacity typically exceeds the running wattage, so a generator with a higher surge rating can manage more demanding appliances without tripping the circuit. Understanding this capacity helps in selecting a generator that meets both starting and running requirements.

Power Factor: This term describes how effectively the generator converts electrical power into useful work, usually expressed as a ratio. A generator with a low power factor may require you to select a generator with a higher wattage rating to meet the same needs as one with a higher power factor. This is crucial to ensure that the generator’s output aligns with the actual power requirements of your appliances.

Load Management: Properly managing the load entails understanding which appliances can run simultaneously and their combined wattage demands. By prioritizing essential appliances and staggering their use, you can maximize the efficiency of your generator. This management is vital to prevent overload and ensure that your generator operates effectively without damage.

What is the Recommended Minimum Wattage for Common Household Needs?

The recommended minimum wattage for common household needs refers to the amount of electrical power required to efficiently operate essential appliances and systems within a home during a power outage. This wattage varies based on the appliances used, but typically ranges from 3,000 to 5,000 watts for basic needs, while larger homes with more appliances may require 10,000 watts or more.

According to the U.S. Department of Energy, a generator’s wattage should be sufficient to cover the starting and running wattage of appliances. Starting wattage is typically higher than running wattage, especially for motor-driven appliances like refrigerators and air conditioners (U.S. Department of Energy, 2021). For example, a refrigerator may require around 1,200 watts to start and only about 200-300 watts to run, emphasizing the importance of understanding both figures when selecting a generator.

Key aspects of determining the best wattage for a home generator include assessing the total wattage needed for essential appliances, considering safety margins, and evaluating the frequency of use. Common household appliances such as heating systems, water heaters, and sump pumps can significantly impact the total wattage requirement. For instance, a central air conditioner may require up to 5,000 watts to start, while a microwave may only need 1,200 watts. Therefore, calculating the combined start and running wattage of all necessary appliances is crucial for an accurate assessment.

This impacts homeowners in various ways, particularly in emergency preparedness. Knowing the appropriate generator wattage helps ensure that essential systems are operational during outages, which can prevent food spoilage, maintain comfort, and provide necessary medical support. Moreover, a generator that is inadequately powered may lead to equipment failure or damage, emphasizing the importance of selecting a generator that meets the specific wattage needs of the household.

Statistics reveal that around 30% of American households experience power outages annually, making the choice of an appropriate generator essential for ensuring uninterrupted electricity supply (U.S. Energy Information Administration, 2022). The benefits of having a generator with the right wattage extend beyond convenience; they include peace of mind during emergencies and the ability to maintain normalcy in daily life activities.

Best practices for determining the optimal wattage include creating a list of essential appliances and their respective wattage requirements, consulting the manufacturer’s specifications, and possibly using a wattage calculator available online. Additionally, it may be beneficial to consider purchasing a generator with a higher wattage capacity than initially calculated to accommodate future needs or additional appliances that may be added later.

How Can I Benefit from Choosing the Right Wattage for My Generator?

Selecting the appropriate wattage for your home generator is crucial for ensuring your power needs are met efficiently and safely.

  • Power Requirements: Understanding your power requirements helps in determining the best wattage for your generator.
  • Starting vs. Running Wattage: Differentiating between starting and running wattage is essential for proper generator selection.
  • Energy Efficiency: Choosing the right wattage can lead to better energy efficiency and reduced fuel consumption.
  • Cost-Effectiveness: The right wattage can offer a balance between performance and cost, making it a more economical choice.
  • Future Expansion: Considering future power needs can influence the wattage you choose for your generator.

Understanding your power requirements helps in determining the best wattage for your generator. This involves calculating the total wattage of all devices you intend to run simultaneously, ensuring that the generator can handle the load without exceeding its limits.

Differentiating between starting and running wattage is essential for proper generator selection. Many appliances require a surge of power to start, which is higher than the power they consume while running; hence, a generator must be capable of providing this initial boost.

Choosing the right wattage can lead to better energy efficiency and reduced fuel consumption. A generator that is too powerful for your needs may waste fuel, while one that is underpowered could struggle, leading to additional wear and tear.

The right wattage can offer a balance between performance and cost, making it a more economical choice. Generators with higher wattage capacities often come with a higher price tag, so selecting one that meets your specific needs can save you money in both upfront and operational costs.

Considering future power needs can influence the wattage you choose for your generator. If you plan to add more devices or appliances later, opting for a slightly higher wattage can accommodate those future expansions without the need for another generator.

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