Thoughts on running an extension cord from the house to the chicken run for a tall-standing industrial fan? We are going out of town this weekend and I won’t be able to do my typical trip to the coop to start their battery powered fan. Is it safe to run an extension cord out there to a fan? It stands about 4-5ft tall and the run is covered. I was going to place it outside the coop, facing in to blow through the window. We will also have a friend checking in them while we are gone