The answer to 'generator making buzzing noise' is that a buzzing sound from a generator is often caused by a problem with the generator's internal components or electrical system. This can be due to issues like a loose connection, worn bearings, or a problem with the voltage regulator or alternator.
Some common symptoms of a buzzing generator include a loud, high-pitched buzzing or humming noise, as well as inconsistent or fluctuating power output. In some cases, the generator may also vibrate excessively or shut off unexpectedly. If you're experiencing these issues, it's best to have a professional electrical technician inspect and diagnose the problem to determine the appropriate solution.