Do you have numerous extension cords, power bars and plug-in tap outlets (for example, expanding a receptacle from taking 2 to 6 plugs) in use in your home? This could be a sign of an outdated electrical system or that the spacing / number of receptacles in certain rooms is inadequate, causing you to utilize these expansion methods to satisfy your electrical needs.
The wires used in extension cord wires are designed to carry a certain amount of power (amperage) and commonly are less than that used in household wiring. Often this is not well understood by users making them a potential fire hazard.
Today’s electrical needs have grown significantly and as a result your home may require electrical upgrades to meet these demands. If this sounds like your home, further professional advice may be warranted.