I have an existing 200a service in my home. The panel is located in the garage. Over the years I have added several 15a circuits. I have an air compressor I want to install in the garage that requires a 50a 240v circuit. Will it require a sub panel, or can it be installed on the existing main panel? If I need a sub, will it require an upgrade from my service provider? Either way, I plan on getting an electrician to do the work. I just want to know what I’m facing.