Common Defects Posted on May 25, 2015July 16, 2015 by wp8admin RoofChimney Structural Attic Interior Electrical ◄ Back Next ► Picture 2 of 10 An improperly sized and connected wire has resulted in overloading and a potential fire hazard. All wires should be connected to overload protection devices (circuit breakers or fuses) properly sized for the wiring.