I want to install this but my circuit breaker box is full. How can I add the 30 amp breaker to feed to the generator I purchase

Hello Mark, In order to help you we need to know more information about your experience with this product. You can contact us anytime using our chat live https://www.se.com/us/en/work/support/customer-care/contact-schneider-electric.jsp where an agent will be able to give you further assistance on this matter. Warm regards. Schneider Electric Customer Care