Before I burn something up, or down, I need advice. I want to leave my travel trailer refrigerator on, so I just ran a regular household extension cord into my shed, which is hooked up to a 30 amp breaker. I just hooked it up yesterday to assure the a/c and refrigerator worked. I'm pretty sure this isn't sufficient enough. Would a heavy duty extension cord be fine? Do I need to run a receptacle near the camper? I'm in no way shape or for an electrician, so need a little guidance. I only plan on running the fridge, and a small fan. Thanks