Abstract: An installation process for a backup generator and ATS which streamlines the ATS and generator installation process and a ATS control box used therewith. In addition to the ATS control box, a two pole circuit breaker, three service relays, and at least one single pole circuit breaker are require to connect to an existing electrical panel. The process entails (1) installing the two pole circuit breaker into the existing electrical panel, (2) connecting the service relays in the electrical panel, (3) connecting breaker relays to any circuit which is not to be fed electricity when utility power is lost, (4) mounting the ATS externally from the electrical panel and connecting it to the above listed components and a electrical panel control feed, and (5) connecting the generator to the ATS control box.