Yes. You can install a generator yourself, although it is always best to have a professional do it. When installing a generator, you will need to make sure that it is properly grounded. You should also have a licensed electrician install the transfer switch so that the generator can be properly connected to your home's electrical system.

It depends on the generator. Some generators are more difficult to install than others. If you're not experienced with generator installation, it's always best to hire a professional.