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Justin upgraded my main panel, and installed a sub panel in my garage. He also added a 50A outlet for an EVSE (electric car charger). I was very interested in the work he was doing. Throughout the day, I would step out and ask questions about each step of the process. He was very knowledgeable and patient while answering each of my questions. He really knows his stuff. After everything was installed, he went through the house and labeled each circuit at the panel, and explained how to how to properly reset and test them. Overall, I am very pleased with my experience with Interstate Electric and Solar.