This Generac Protector® Series Diesel Home Standby Generator features Code Ready, a set of popular preconfigured options and a range of code-driven accessories, so you can feel confident that your generator will be able to conform to the required local codes which can vary from one region to another. Compatible with a variety of environments, the Protector Series is versatile, adaptable and meets UL requirements, making it an affordable choice for residential and light commercial applications for your backup power needs. Transfer switch sold separately. Assembled in U.S.A.