It seems like there should be more information regarding overloaded circuits. This is always a problem especially in the Winter when many use electric heaters. No more than one heater should be on any one circuit. The average heater pulls about 1300-1500 watts on high. This is about the limit for a 120 volt circuit. You could probably use a tv or a couple lights on the same one, but NEVER more than one heater. If more than one heater is used, make sure they are on different circuits. One other thing, make sure the plug on the heater is CLEAN and FITS THE WALL RECEPTICLE TIGHTLY. If the plug ever starts to feel HOT, discontinue use of the heater until the problem is found. It is normal for the plug of an appliance that pulls down this many watts to get a little warm, but immediately after unplugging, if the prongs are HOT enough that you cannot keep your finger on it, there is a problem and danger of fire.