I bought this from Randal Burke to keep the water from freezing in winter. Unfortunately, it doesn't say anywhere what the wattage or amperage is on the website, the box, or the heater itself. I don't want to blow the fuse in the coop. Can anyone tell me where I could find this information out? http://www.randallburkey.com/Electric-Heater-Base/productinfo/10019/ Help?