Can You Run a Generator in a Shed? [Details Explained]

If you are thinking about running a generator in a shed, then please don’t do it. Having a shed can be an actual rescuer when it comes to having a dedicated area for stuff like do it by yourself projects. But, a vital feature of this is having a supply of power in the shed. 

Several persons may choose to run a generator in their shed as their chief power source. But it is not safe. Running a generator in a shed is the most horrible and perhaps the last selection you will ever make. 

The three main reasons for that are likely carbon monoxide poisoning, fire and burn hazards, and noise hazard. 

Whether you own a new generator or one that has been fixed a hundred times, it is not safe to run a generator in a shed. You can know briefly about running a generator in a shed which we will briefly discuss here.

Why can’t you run a generator in a shed?

Running a generator in a shed is unsafe for many reasons. The main reasons include the generator poses a likely fire threat, there is a danger of carbon monoxide poisoning, and noise. Irrespective of the kind of generator you think to use, the danger issues stay the same. 

Therefore, it is vital to remember when choosing a power source for your shed. Here we will be discussing the main reasons and some other reasons as well. 

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Sheds Have Poor Airflow 

Sheds might have a window or two, but several have zero. As a result, sheds have poor airflow. A deficiency of airflow leads to poor air quality. Breathing in the dirt a full day is a danger itself so wear an easy breathing mask. If you do not have one, they are simple to get from your preferred hardware store. 

Even if you keep the door to your shed and every probable window open, there will still be air quality problems. Dirt and dangerous chemicals will stay airborne for you to inhale or accumulate and become a fire threat. 

Carbon Monoxide Poisoning

Carbon monoxide poisoning is the biggest dangerous threat for running any generator in a shed. Carbon monoxide is unscented and can cause headaches, faintness, sleepiness, vomiting, and death. It is recognized as the silent killer. 

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Thus, you should not take any risks with it. During running a generator in your shed, the machine will emit lots of substances. In an enclosed space like this, it can prove to be deadly except for smokeless and noiseless power stations. 

When the generator fuel is being burnt, it is emitting several chemicals like nitrogen, soot, carbon dioxide, and the notorious carbon monoxide. 

With restricted airflow, it becomes too easy for these chemicals to be inhaled and result in possible untimely death.  If you are in any room where burning is occurring, and you start to feel wobbly or unwell, get out instantly. 

Noisy Environments 

Being unprotected from huge amounts of noise, particularly for extended periods can result in hearing loss. The best efficient way of knowing whether the surroundings around you are very loud is by checking whether you are effortlessly able to talk without having to increase your voice. 

If you require to, it is time to don a few ear defenders. Even the noiseless generators are still around 40 dB which inside a shed can be injurious to your hearing. 

Fire Threat

A generator is factory-made in such a way that it should stop a fire. But if it is used wrongly, then the danger of fire is very real. A fire will start when an explosion source meets with fuel and oxygen and all of this stuff can be formed by running a generator in your shed. 

It only takes the slightest spur of electricity to bring down the whole shed burning. This is not certainly something you will want.

Can you enclose a portable generator?

You can’t run a generator in a shed as it is not safe. But that does not mean that you cannot enclose your portable generator. The method here is to purchase or make an enclosure that is somewhat bigger than the generator. You do not want anybody going inside with it, for protection concerns. 

Firstly, you need to measure your generator. Ensure the dimensions are correct and comprise any wheels, handles, frames, or other portions. Then, you should add a minimum of 24 inches on each side, but you can add more if you want. 

While you do not want a shed-sized room, it is essential to provide your generator with sufficient room for ventilation and protection reasons. Setting a generator inside a shed is that you have to enter it to stop the generator. 

Although this may not look like a big task, space is holding any releases from your generator. The only instant this would not concern you is when you are using a zero-release, battery-powered generator, which is tough to discover. 

A solar generator will not run at home because it needs the sun’s light to power it, and a gas generator has carbon monoxide gas releases. 

Though it is normally harmless to run a gas-powered generator, doing so in a shed where you have to stand and inhale to start or stop anything is harmful to your health. 

Many people complain that the rain, snow, and ice always fall on the generator. Select a small size enclosure to save your generator from the rain, snow, and ice.

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How much ventilation does a generator need?

Running your generator in a shed may provide sufficient ventilation, but it is never going to be a harmless selection. Although a shed looks like a big enough area, the simple fact is that it isn’t. An enclosed area such as a shed will let smoke build-up. 

A little, ventilated cover is harmless to use because it is outdoors. In the meantime, a shed isn’t. When the issue of proper ventilation comes, there are a couple of different methods, and it is vital to understand both. 

Firstly, there are two to three feet of space needed around a generator for protection. Generally, this provides the generator breathing space and lets air flow for the combustion procedure. Your generator requires lots of airflows to run correctly. 

Search for generator covers that provide slitted edges that are slanted to send water away from the enclosure. By turns, if you think to do it yourself, make your calculations sensibly and use a manufactured side panel that allows moving the air to the generator easily.

How can you guard your portable generator against the weather?

When you are not using your generator, you can store a generator in the house. Sheds, garages, and underground rooms are all good places for an inactive generator. It is important to keep the portable generator out of the weather and away from robbers. 

Based on the weather where you live, an elevated platform and an awning or rooftop are enough to shield some generators from severe weather. 

Maximum dry weather, like the desert, does not have much rain, and simply sending that water away from an elevated generator is satisfactory. Particularly if you live outside a town where the probabilities of stealing are little to none, this solution is wise. 

Else, when you live in a humid, rainy, or snowy area, your generator is going to require additional safety. In such cases, select a manufactured generator encloser that is bigger than your generator, or build an adequately ventilated generator housing yourself.

Can you run a generator on a porch?

Like the answer to the question can you run a generator in a shed, the answer to this question is the same, which is no. Generally, porches are mostly enclosed. The roof makes this look like an attractive place, but it is not because of the proximity to your house. 

Windows, vents, and other air-moving gateways will allow the exhaust into your house, which is unsafe to you and your family or domestic animals. The little ease of having that simple access generator can still make severe long-term harm a little at a time. 

Rather, run your generator outdoors at all times. You need to run an outdoor-rated extension cable from the machine to the instruments you want to power or use a generator cable to link to a transfer switch.

Frequently Asked Questions (FAQs)

Where is the safest place to put a generator?

You need to consider the safety factor mainly before placing a generator. Your portable generator should be placed outdoor on a smooth, level surface that does not flood. Generator emission holds carbon monoxide. Thus, generator placement should be at a minimum of 5 feet from any windows, entrances, or soffit vents.

Can you run a portable generator continuously?

You can’t run a portable generator in a shed, but it might amaze you to know that you can run a portable generator nearly continuously. Particularly, you will require to check the stipulations of the model you own before attempting it. Also, you will preferably require two generators if you want to power something, such as your house, permanently so you can substitute. 

How do I safely run a generator in a garage?

Similar to a shed, you can’t run a generator safely in a garage. While your garage might be well ventilated, the only method this would work is if nobody has access to your garage. As you will require to add fuel and access the switches, it is not possible. An enclosed area like a garage will let smoke build up. The carbon monoxide gases that the generator emits can cause headaches, vomiting, or even death.

Can you run a generator overnight?

The answer is yes. But there are some issues that you will have to cope with. Maximum generators can run about eight hours before they finish their fuel tank. It is sufficient gas for overnight.

Should you ground a portable generator?

The answer is yes. But there are some issues that you will have to cope with. Maximum generators can run about eight hours before they finish their fuel tank. It is sufficient gas for overnight.


Maximum people make wrong decisions for placing a generator. It is a lethal idea to run a generator in a shed, or any enclosed area for that matter. Running your generator out of the shed is simple and a much harmless choice. 

Hopefully, after reading this article you have known the answer to the question of can you run a generator in a shed very well. Still, if you are in confusion, believe your instincts and turn to a professional.