I'm an electrical engineering student and I'm graduating in December 2018. For my senior design project, I'm working on designing an automatic transfer switch which can be monitored and controlled using an app that I will program. I'm drawing a circuit for it which isn't finished yet and trying my best to comply with NEC. After my design is finished, I'm wondering where it would be okay to test it. I'm pretty sure it would be extremely dangerous and illegal to test it in my backyard because of fire hazard since the ATS I'm designing will be able to handle lots of power. I want to have it running for a week without turning it off to make sure everything is running properly. How would I go about testing my design legally and safely?