Most of our installations are completed within a day with one or more electricians. All our installers are employees of O.J. Mann Electric. We do not outsource our installations. We start early with the determination of having a working generator for you by end of day. When we complete your installation, our installer will explain to you everything you need to know about your generator, from the weekly self test to what to expect during an outage. Maintaining your generator is very important. O.J. Mann will provide you a maintenance contract.