Best Portable Generators for Construction

Can you imagine saying no to a construction proposal because you don’t own a reliable portable power source? It could be the last thing you want to hear in the pursuit of increasing your construction gigs. But, unfortunately, many construction contracts are coming up in remote areas, estates, and farms with no electricity connection. There is a need to invest in the best portable generators for construction.

Investing in the best portable generator for construction work will help you win more construction deals, improving your profitability, and building your portfolio.

Besides powering your power tools, you can also use the generator to power your home when there’s a power outage. Thus, it would be best to have a durable, low operational cost, reliable, portable, and powerful generator.

With the many portable generators in the market, settling for the right one for your construction work can be challenging. One can also check about the best generators for camping and RV.

Check out some of the best portable generators for construction on the table  below


Westinghouse WPro8500 Super Duty Industrial Portable Generator Westinghouse WPro8500 Super Duty Industrial Portable Generator
  • Wattage: 8500 watts
  • Noise Level: 74 dBA
  • Run Time: 17.5 hours/ 6.6 gallon
  • Weight: 216 Ibs
OUR TOP PICKDuroMax XP12000EH Generator-12000 Watt DuroMax XP12000EH Generator-12000 Watt 
  • Wattage: 12000 watts
  • Noise Level: 74 dBA
  • Run Time: 8.83 hrs on gasoline & 7.2 hours on propane
  • Weight: 224 Ibs

Champion 8000-Watt Dual Fuel Portable Generator Champion 8000-Watt Dual Fuel Portable Generator
  • Wattage: 8000 watts
  • Noise Level: 74 dBA
  • Run Time: 8 hrs on gasoline or propane
  • Weight: 210 Ibs
OUR BUDGET PICKHONDA EB10000 Industrial Generator HONDA EB10000 Industrial Generator
  • Wattage: 9000 watts
  • Noise Level: 74 – 76 dBA
  • Run Time: 7.9 hours @ 1/2 load & 5.4 hours on full load
  • Weight: 403 Ibs
DuroStar DS10000E Gas Powered Portable Generator DuroStar DS10000E Gas Powered Portable Generator
  • Wattage: 8000 watts
  • Noise Level: 72 dBA
  • Run Time: 10 hours @ 1/2 load
  • Weight: 129 Ibs
A-iPower SUA15000ECV 15000-Watt Portable Generator A-iPower SUA15000ECV 15000-Watt Portable Generator
  • Wattage: 15,000 watts
  • Noise Level: 85 dBA
  • Run Time: 7 hours @ 1/2 load & 5 hours @ full load
  • Weight: 460 Ibs
Green-Power America GPG10000EW 10000W Pro Series Recoil Electric Start Generator Green-Power America GPG10000EW 10000W Pro Series Recoil Electric Start Generator
  • Wattage: 10,000 watts
  • Noise Level: 76 dBA
  • Run Time: 9 hours @ 50% load on 6.6 gallon
  • Weight: 179.6 Ibs
Generac 7676 GP8000E Portable Generator Generac 7676 GP8000E Portable Generator
  • Wattage: 8,000 watts
  • Noise Level: 70 dBA
  • Run Time: 11 hours @ 50% load
  • Weight: 214 Ibs
Cat RP7500E Gas Powered Portable Generator Cat RP7500E Gas Powered Portable Generator
  • Wattage: 7,500 watts
  • Noise Level:
  • Run Time: 11 hours @ 50% load on single tank
  • Weight: 192.61 Ibs


1. Westinghouse WPro8500 -Robust Work Site Generator

A very fuel-efficient and powerful generator suitable for your construction duties. This generator has a peak wattage of 11,500W and 8,500 running watts.

Its output is sufficient for running multiple power tools at your construction site.

This model has three start systems, an electric starter, remote start system backed up by a conventional recoil start.

The remote operation feature allows you to power on and off the unit when it’s 100 yards away.

The model has a 457cc Westinghouse 4-stroke engine running on gasoline. While this unit is not an inverter generator, it delivers clean power with less than 5% THD.

As a result, you can power your sensitive electronics, including computers and smartphones, as your power tools are running.

This generator has a 6.6-gallon fuel tank capacity. This unit can offer you 17.5 hours of consistent operations with a single fuel tank when running on a quarter load.

The runtime reduces to 12 hours when it has a 50% load. Thus, you can comfortably run your power tools from morning to evening without refueling from its fuel consumption rate.

This generator has an automatic idle feature that regulates the engine speed depending on the existing load.

The feature prolongs your engine lifespan and increases the generator’s fuel efficiency rate. In addition, it has a built-in fuel gauge for easy monitoring of fuel levels when the unit is running.

You can power a range of tools and your smart appliances from the different outlets on this model. They include;

  • Four 120V 20A household-style outlets
  • Single 120V 30A outlets- you can connect the generator to your house or an RV unit.
  • 120/240V 30A outlet to provide 240V to industrial applications or run small industrial equipment
  • Double 5V USB ports for easy charging and connection of your smart devices

All outlets are GFCI protected.

best portable generators for construction

This generator can be challenging to lift and move around by yourself. To improve on its portability, the manufacturer provides a lifting hook you can mount on the chassis for easy lifting with the help of a machine. In addition, the twin never-flat wheels and foldable handle improves its movability on an even ground.


  • It’s a robust generator with high fuel efficiency.
  • It has many outlets for a wide range of uses.


  • It’s a heavy unit to lift and move around.


2. DuroMax XP12000EH -Dual Fuel Generator for Construction Site

It offers the best value for your money and bringing convenience to your job site.

This model has a 457cc 18HP OHV engine that runs on either propane gas or gasoline. There is an adjustable dial for switching from either fuel source.

When running on gasoline, you will get 12,000 peak wattage and 9,500 running watts. Propane delivers slightly lower output at 11,400 rated watts and 9025 running watts.

Whether you’re running it on propane or gasoline, the output power is enough to power most tools at construction sites. Your project will not stall the lack of fuel for powering your generator.

Stock up both gasoline and propane gas, and you will be sure of a steady power supply to complete your construction contract.

The gasoline fuel tank can hold a maximum of 8.3 gallons. With a full tank, this model has a runtime of about 8.8 hours when it’s running with a 50% load.

A 40-pound propane tank can power this generator for 7.2 hours at 50% load. The runtime on both fuel sources can significantly increase when you run the unit on a lower load and when the idle control feature is switched on.

Only plug in the tools that you are using, and you will be satisfied with the runtime.

DuroMax XP12000EH has a CO alert feature. The generator will alert and auto power off when the ambient carbon monoxide levels are becoming dangerous. This feature will keep you and your crew safe from poisonous fumes.

You can start this generator through the traditional recoil start mechanism or an easy-to-push electric start button.

In addition, this unit comes with an easy-to-read digital command center to observe the running voltage and maintenance hours.

This generator has five powerful outlets;

  • Two 120 volts 20A GFCI-protected outlets
  • Single 120 volts 30A outlet
  • Single 120/240 volts 30A outlet
  • One 120/240 volts 50A heavy duty outlet

It has a voltage selector that allows you to choose between running the unit at 120 volts full or 120 and 240 volts together.

The model is heavy to lift but comes with a flexible handle and wheels to make it easier for you to move the unit.


  • The use of propane gas is friendly to the environment than depending entirely on gasoline.
  • It’s a dual fuel generator giving you the ability to use whichever fuel source is available.


  • It’s a heavy model. However, it has an open frame design for easy lifting this heavy, and its wheels are unreliable.


3. Champion 8000- Good Construction Generator for its Price

A generator for multipurpose use, making it a perfect fit for anyone looking for a reliable generator for their construction venture.

It’s a dual fuel portable generator with high power output to meet your various power demands at your site and home in case of emergencies. The availability of either propane gas or gasoline will determine which fuel source is ideal for you.

When running it on gasoline, this model delivers 10,000 peak wattage and 8,000 running watts. This power capacity is capable of running several power tools together.

When it’s powered by propane, it produces 9025 starting watts and 7250 running wattage. If your job requires more power output, then you can pick other options in this review.

This generator runs on a 459cc Champion engine. You can either use an electric start or the conventional recoil start mechanism to power it on. The Cold Start Technology guarantees you an easy start in cold weather.

When this generator has a 50% load, it can power your tools for at least 8 hours on its single 6.0-gallon tank capacity. A 20-pound propane gas tank would deliver a 5 hours’ runtime on the same load. Are you worried about overloading risks? This unit has an in-built surge protector, which protects it from overload risks.

There is an intelligence for easy monitoring of the generator’s performance, remaining runtime, and maintenance interval on the control panel.

As a generator ideal for outdoor work, this unit has several power outlets, including;

  • Four 120 volts 20 A GFCI protected outlets.
  • Single 120 volts 30A outlet for easy connecting to an RV or any other power demanding appliance
  • Single 120/240 volts 30A outlet

The plenty outlets ensure that your essential power demanding tools aren’t idle when they’re supposed to be running.

The set of non-flat tires makes it suitable to move around your construction site without the fear of having a flat tire. The flexible and open frame design enhances its portability feature. However, it is heavy to lift if you are alone.



  • It has a reasonable fuel efficiency rate.
  • It offers good value for money; it is not an expensive nor cheap model in the market.



4. Honda EB10000 -Reliable Job Site Generator

Honda is one of the renowned generator brands in the market with stellar reviews from thousands of customers. The brand is expensive, but it will not disappoint you.

Honda EB10000 is a powerful generator with an open frame design. If you want to avoid power failures at your construction site, consider going for this model.

The model runs on a 688cc Honda V-Twin engine to deliver 9000 running watts and 10000 peak wattage.

You can start it through its convenient electric start knob. Unfortunately, the model generates power with less than 10% THD; it’s therefore not safe for powering vulnerable electronics. But it can run power-consuming tools, including a concrete vibrator, table saw, drills, among others.

This model has a fuel tank capacity of 8.2 gallons. With a full tank, the unit can run your power tools for approximately 7.9 hours when it has a load of 50%. When it runs on a full load, the unit can serve you for about 5.4 hours. The lesser the load, the more the running time.

best portable generators for constructionIt has a CO-minder feature that detects carbon monoxide levels. The unit signals and shuts down when it senses CO levels are becoming a hazard. This feature protects anyone working around it from breathing poisonous emissions.

A convenient data center on the control panel gives users information on the running voltage and lifetime runtime.

best portable generators for constructionWith the help of an in-built fuel gauge, you can conveniently check the fuel levels and plan for the next refill. To safeguard the unit from overheating when running, the manufacturer included an in-built temperature protection system.

The generator has 7 AC outlets which include;

  • Dual duplex 120V 20A household-style outlets
  • Single 120V 30A outlet for an easy connection with your RV.
  • 120/240 volts 30A outlet
  • 120/240 volts 50A outlet

This model can comfortably run-heavy power-consuming tools when plugged into the 120/240V 50A receptacle.

On portability, this unit is heavy, but it comes with a flexible handle and never-flat tires which makes it easy to move on the ground. It also has a lifting hook on the top side of the frame to enhance safety when lifting or transporting it.


  • It has a convenient electric start knob.
  • It’s a reliable brand in the market.


  • It has a relatively low runtime.
  • It doesn’t have a backup recoil start mechanism in case the electric start fails.

5. Durostar DS10000E – Affordable Job Site Generator

It’s a perfect model for portable generators for construction. It’s built to be moved into any terrain, thanks to its open-frame design, wheelset, and folding handle design.

This model generates 10,000 starting watts and 8,000 running watts from its 439cc OHV engine. This power output can run high voltage machines and power tools at your site. However, the power from this generator has less than 12%THD making it inappropriate to power your delicate appliances. DS10000E has a pull start and electric starter option

Are you worried about the power surge and the safety of your tools and equipment? This unit utilizes surge arrest technology to ensure they are safe from the risks of overvoltage.

best portable generators for constructionIf your power usage at the construction site is intermittent, this is your perfect match. The generator has an idle control feature that lowers the generator’s RPM when it is not in use. In return, this reduces its fuel consumption, noise and extends the engine’s lifespan.

Durostar DS10000E has a fuel tank capacity of 8.3 gallons. This unit can provide you with power for 10 hours when it’s running at 50%. It comes with a handy voltmeter to help you monitor the power output and status of the generator. In addition, the presence of an in-built fuel gauge makes it easy to determine the remaining fuel and plan for a refill if necessary.

The power panel of this model has various outlets to serve your power needs. It features 5 AC outlets and a single DC outlet.

  • Dual 120V 20A GFCI outlets
  • 120V 30A outlet
  • 120/240V 30A outlet
  • 120/240V 50A outlet
  • 5V 8A DC outlet for easy charging of batteries

The ample outlets are suitable for connecting the generator to your home through a power box, an RV, and to your tools and equipment. Plug your heavy appliances on the 120/240V 50A receptacle and choose to either use 120V at maximum or both 120V and 240V.


  • It has GFCI outlets.
  • It’s an affordable and yet powerful model.


  • It has low fuel efficiency.

6. A-iPower SUA15000ECV -Best Job Site Generator

It’s the most powerful model in our review.

This powerhouse runs on a 24HP twin-cylinder engine that generates up to 15,000 starting watts and 12,000 running watts.

This power can run heavy-duty tools and equipment at your site without any struggles. It can also power almost every appliance in your home in case of a power blackout.

This unit produces pure sine waves despite the high power output, making it suitable to power even delicate electronics. You will have an easy time starting this model, thanks to its electric start mechanism.

The unit has an 8-gallon fuel tank. A-iPower SUA15000ECV can power your tools and equipment for 7 hours when running on a 50% load on a single tank. At a full load, this unit can run for 5 hours on a single tank. If you are after big power output regardless of the runtime, this is a perfect choice.

This generator has an in-built automatic voltage regulator that protects your power tools and other gadgets from the risks of a power surge. This is a safety measure available in few options in the market.

With the data center on the control panel, you can conveniently look at the remaining runtime, voltage, and wattage. It also has an easy-to-read fuel gauge for effortless monitoring of fuel levels as the unit is running.

Even though this model is heavy to lift, partially contributed by the heavy-duty all-steel fuel tank, it comes with four-inch, four-way wheels. These wheels make it easy to move along the floor. In addition, the lifting hooks available on this model make it easy and safe to lift and transport this generator.

On the power panel, A-iPower SUA15000ECV has the following outlets;

  • Double 120 volts 20A household GFCI outlets- GFCI outlets make it safe to plug in every damp environment at your construction site.
  • 120 volts 30A outlet
  • 120/240 volts 30A outlet
  • 120/240 volts 50A outlet
  • 12 volts 8.3A outlet- For easy charging of batteries. It also comes with USB adaptors for quick charging of your phone and other devices.

All outlets on A-iPower SUA15000ECV are covered when the generator is not operating, protecting the outlets from clogging dirt.


  • It has an in-built AVR, which protects your tools and equipment from power surge risks.
  • GFCI outlets for safety operations


  • Low fuel efficiency- If fuel efficiency is your concern and not power output, then you should consider another model in this review.

7. Green Power America GPG10000EW -Affordable Worksite Generator


If you’re operating on a tight budget and still need a powerful portable generator for your construction assignments, consider GPG10000EW Portable Generator. Green Power America is the least popular brand in this review. However, it has excellent features found on famous brands in this review.

It delivers 7,500 running wattage and 10,000 starting watts from a 420cc OHV engine. And it supports both electric and conventional recoil start mechanisms. This amount of power allows you to run a wide range of power tools and equipment at your job site.

This generator has a 6.6-gallon fuel tank capacity. Thus, it can serve your power demands for about 9 hours when it has a 50% load on a full tank. This is impressive runtime considering the amount of power output and price range of this model. With the digital data center, you conveniently monitor the running voltage, frequency, and remaining runtime. An hour meter that tracts the generator’s maintenance levels is also included.

Any adult can lift this portable generator and load it to their truck. Besides being relatively light, GPG10000EW has 10-inch solid non-flat tires and collapsible transporting handles.

There are 6 AC outlets and a single DC outlet for meeting your different power demands; light and heavy-duty power demands.

  • Four 120 volts 20A GFCI receptacles
  • 120V twist-lock AC receptacle
  • 120/240 volts 30A receptacle
  • 12 volts 8.3A DC receptacle

All outlets have a covering to ensure no debris is trapped inside when the outlets are not in use.


  • It has a low price tag and delivers quality services.
  • It’s has a relatively long runtime.


  • The generator does not come with a user manual.


8. Generac 7676 GP8000E Portable Generator- Good Runtime

Fitted with Power Rush technology, this generator produces 30% more starting power to enable you to achieve more with less. In addition, the feature increases the reliability of this model.

This model runs on a 420cc Generac OHV 4-stroke engine that delivers a running wattage of 8,000W and 10,000 starting wattage. However, this generator produces 30% more starting power thanks to its Power Rush Technology.

The power produced by GP8000E can’t run sensitive electronics since it has less than 20% THD, which is quite on the higher side. GP8000E has both a traditional pull-start mechanism and a simple electric start feature.

It has a large fuel tank with a capacity of 7.9 gallons. When this tank is full, and the generator is loaded with a 50% load, it can power the load for 11 hours. This is a relatively high runtime considering its power output.

You can easily monitor the status of this generator thanks to its digital data center. An in-built fuel gauge also makes it easy to assess the gas levels and plan for a refill. Of course, you don’t want the generator to shut off in the middle of running your power tools.

On the power outlets, this generator has 5AC outlets;

  • Double duplexes 120 volts 20A GFCI outlets
  • 120/240 volts 30A outlet

This generator can meet most of your job site power demands. With a transfer switch ready, you can easily connect it to your home’s breaker box in case of an emergency.

With a weight of about 198 pounds, this generator is relatively light compared to other generators of its range. However, lifting it manually by yourself can be challenging.

To compensate for its heaviness, it has a 9.5-inch wheelset and a folding handle which simplifies its movement. The 9.5-inch wheels are also perfect for moving this generator across rugged terrains on a construction site.


  • It has a good runtime.
  • The 30% more starting power is an advantage to a contractor with equipment with high starting power.


  • It may be difficult to access its spare parts should they fail.


9. Cat RP7500E 502-3690 Portable Generator- Lightweight 

It is one of the steady generators for construction in the market. However, it’s suitable for lightweight tools and equipment.

Running on a 420cc OHV engine, Cat RP7500E delivers a running wattage of 7500W and a peak wattage of 9375W. This power output is enough to keep your hammer drills, table saws, and air compressors running.

The generator has a stylish and straightforward electric starter for easy starting and powering off. It also features a conventional pull start mechanism as a backup should the battery fail to start the electric mechanism.

Cat RP7500E has a fuel tank capacity of 7.9 gallons. This generator can power your power tools and equipment for about 11 hours when it’s running on a half load on a single tank. It’s an impressive runtime for powering your equipment from morning to evening.

If you have few power tools to connect, the better you will enjoy long runtime. You can conveniently check on the generator’s fuel level through the built-in fuel gauge. Additionally, it has an illuminated control panel for easy operation when working in late hours.

This model has six power outlets that allow you to run up to 6 power tools concurrently.

  • Double duplex 120 volts 20A GFCI receptacles
  • 120 volts 30A receptacle
  • 120/240 volts 30A receptacle

Apart from powering your tools, you can conveniently connect your home with power from this generator thanks to the transfer switch-ready feature. If you are an RV reveler, this model comes with an RV adapter for quick connection.

Cat RP7500E is a heavy generator weighing 207 pounds. Manually lifting it by yourself can be strenuous. However, the folding handles and two never-flat wheels make it easy to maneuver with this generator once it’s on the ground. In addition, the padded double handle offers comfort when it’s being moved around.


  • It offers a high run time.
  • It comes with oil inside; you only need to put gasoline to run it once it arrives.


  • it doesn’t have any DC outlet for quick charging of your devices.


All portable generators in this review have at least a 2-years manufacturer’s warranty period.

Problems With Portable Generators Used for Construction

best portable generators for construction

1. Poor Wattage

Power tools require consistent energy to run efficiently. Most power tools have their energy ratings on their labels.

However, there are portable generators that don’t deliver consistent power to run these tools. To avoid this flaw, check on your power tools’ energy requirements before going to shop for a portable generator to power them. You can read more on what causes a portable generator to surge.

2. Sub-standard Components

Unreliable portable generators have inferior quality engine components, which shortens their lifespan. It’s therefore essential that you find a reputable brand in the market that comes with at least a 2-year warranty period.

3. Small Fuel Tanks

best portable generators for construction

A generator’s running time is determined mainly by its fuel tank capacity. Portable generators with small fuel tanks offer a short running time compared to generators with big fuel tanks. Check on the generator’s fuel tank capacity when shopping for one.

4. Noisy Engines

best portable generators for construction

It is a common problem with most traditional and diesel-fueled generators. It can be annoying working next to a noisy portable generator.

Check on the rated output noise of your preferred generator before buying it. If it has a high noise output, check how to reduce the noise or go for a different model.

5. Poor Fuel Efficiency Rate

Generators with a high fuel consumption rate will provide a short runtime. Such generators are also expensive to operate.

Is not all portable generators for construction have the challenges above. However, reputable brands in the market can offer a suitable power supply when at the job site.

So you should familiarize yourself with the common problems with current portable generators for construction. After that, you can make a rational decision on the best portable generator for your construction tasks from our review above.

Must-Have Features For a Portable Generator For Construction

1. Strong Wattage

To run all your power tools at your construction site, you need to invest in a generator with a strong wattage. A generator with 10,000 watts is suitable for running different types of power tools at a job site. However, if you cannot get one with 10,000 watts, a 7,500 starting watts generator will also do. But this one will limit you on the number of tools you can run since its running power is below 7,000 watts. There is a need to also learn how to make portable generator power clean.

2. Fuel Economy

A portable generator that burns fuel quickly will make it expensive for you to run your power tools at the construction site. Therefore, it’s prudent for you to look out for a higher fuel efficiency rate generator. Check out the number of hours a generator runs on a particular load without the need for refueling. A generator with more runtime is considered to be fuel-efficient than one with less runtime. However, you should also consider the power output when looking at the efficiency of the generator.

3. Regular Voltage

Power construction tools are also sensitive to a power surge. A strong power surge can damage your expensive power tools and equipment. To safeguard your tools and equipment, invest in a portable generator that generates a steady voltage and has an overload protection feature. Read more on can you use a power strip with a portable generator?

4. Durability

Investing in a generator that will break down after a few months of usage will waste funds. Find a generator that gives you the value for your money. Check out the material used in building the generator. A durable generator will have strong materials on its casing to guarantee its survival in harsh environments. Consider the manufacturer’s warranty period before settling on any model. The minim warranty period should be at least 2 years.

5. Portability

best portable generators for construction

The essence of investing in a portable generator for construction is to have electricity for your power tools wherever you go. Going for a heavy and bulky generator will give you a hard time when it comes to its transportation.

While most reliable power generators are not light, you should find a generator that weighs less than 300 pounds. Besides the weight, ensure that it has a flexible handle and wheels to improve its portability on any terrain. A wheel kit and handle are a must for a portable generator for construction.

Frequently Asked Questions

1. What Size of a Portable Generator for Construction do I Need?

Portable generators for construction come in different sizes, which are determined by their output power. Similarly, every construction site has other energy demands because they run various power tools. To select the size, look at the number of power tools and equipment you’ll be powering and their energy requirements. When looking at the energy requirements, get a summation of the starting power on one side and the running power on the other side. Read more on this article what size portable generator do I need?

2. Which Safety Precaution Should I Observe When Operating a Generator on a Job Site?

best portable generators for construction

Whenever you are running a generator on the job site, ensure it is protected from rain, direct sunlight, and dust. You should therefore operate it under a tent. Also, ensure that the outlets of your generator are covered whenever they are not in use. Finally, never refuel your generator when running; shut it down and ensure it has cooled before refueling.

3. What is the Safest Distance for Operating a Generator at a Job site?

best portable generators for construction

According to EPA (Environmental protection Agency), you should maintain a safe distance of at least 15 feet from the generator. The further the generator is from you, the better. The safe space keeps you away from the generator noise and the dangerous fumes from the generator. Use outdoor extension cables to keep your portable generator away when it’s operating.


Generators for construction require high power output, reliability, long runtime, and be portable. The review above will help you settle for the best portable generator for building.

All generators in this article have been tested for quality and have passed the test. If you are still undecided on which one to pick, I suggest Westinghouse WPro8500 industrial portable generator.

It is an all-around generator with excellent runtime, powerful, and portable. With the several outlets on this model, this generator will meet your power needs at the construction site.

About Steve Stuart

Steve Stuart is an electrical engineer who developed interest on generators during his school years. After school, he became a generator enthusiast. This is after encountering power supply problems at the area of residence where he lived. Power would be on and off and so food would go bad and the room heater would go off especially during winter. After trying the different generator brands for several years, Steve now provides information on the available brands and products in the market today. Based on his experience, he gives the do’s and the don’ts when it comes to generator use.

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