The answer to 'generator installation making buzzing noise' is that a buzzing noise from a new generator installation is often caused by a loose or improper connection. This could be due to issues with the wiring, grounding, or mounting of the generator. The buzzing sound may also be a sign of an electrical problem, such as a short circuit or faulty component.
If you've recently installed a new generator and it's making a buzzing noise, the first step is to check all the connections to ensure they are tight and secure. Make sure the generator is properly grounded and that there are no loose wires or components. If the buzzing persists, it's best to call in a professional electrician to diagnose and resolve the issue, as improper generator installation can be a fire hazard.