Generators are designed to produce a powerful voltage and, when moisture enters the outlets or seeps into the engine, it can cause an electrocution or explosion. Don't allow a portable generator to get wet or run out in the open in the rain. Never run your generator in humid climates, unless you use a generator tent. Remember that electricity and water don't mix.
When they do, the result is damage to the generator and possible electrocution of people. This occurs because water enters the electrical panel or outlets, which causes a short circuit in the frame. It is generally not advisable to operate a generator in humid conditions and should be avoided. If there are adverse weather conditions, try to wait for it to pass and run the generator only after the conditions have been cleared.
However, situations can arise where you need to run a generator in the rain. It would be dangerous to touch a generator in the rain. Simply touching the frame could cause a life-threatening electric shock. Anyone standing in a puddle would only need to be close to the generator to risk electricity going to them and causing a serious shock.
The smallest amount of water entering the generator will cause the device to stop working and could cause it to explode. Even generators with ground fault circuit interrupt (GFCI) outlets still pose a risk when wet. Another good way to build a PVC generator cover is to build it with three arched PVC pipes attached to a PVC base. If your generator has GFCI outlets, it will stop supplying power to the outlet if water enters.
When comparing the operation of a generator to using a car in the rain, thinking about it a little, it should be obvious that a car engine is in an enclosure. This should also be the case when you connect or unplug the cables that are in the electrical panel of the generator. Covers that fit tightly around your generator are great for protecting it when it's in storage, but they can't be used while it's running. It's important not to become a habit of wetting the generator by following these steps and repeating the process.
Never use an unprotected generator in humid conditions, such as snow or rain, or near swimming pools, sprinklers, when your hands are wet, or when there is ice on the generator. The advantage of doing this is that the generator will always be ready to withstand the load while ensuring its own safety. A garage seems like a good place to install a generator, but it really shouldn't be used unless it's separate from your home. You can also choose to use a battery-powered carbon monoxide detector with your portable generator so that you always have one available when you use it.
If you're running a generator in an attached garage, then you really need to have carbon monoxide detectors in the rooms that are above the garage and in any room connected to it. That doesn't mean you can't use your generator during a storm, but it does mean that you should use a cover for your generator or place it in a location that protects it from rain.