In most cases, you will not need a permit to operate a generator. However, there are some circumstances where a permit may be required. For example, if you're using the generator in a commercial setting or if it is connected to the electrical grid, you will likely need to obtain a permit. Additionally, some municipalities have regulations regarding the use of generators, so it's important to check with your local ordinances before operating one. In general, as long as you follow the manufacturer's guidelines and use common sense, you should not have any problems operating a generator without a permit.