11 signs you should think about rewiring your home Over half of home electrical fires are related to wiring problems. Is your home at risk? How important is it to confirm your house's wiring is in good shape? Consider this: U.S. fire departments respond each year to an estimated 25,900 home electrical fires, according to the U.S. Fire Administration. These fires cause an estimated 280 deaths, 1,125 injuries and $1.1 billion in property loss.Thirty-nine percent of home electrical fires involve outlets and receptacles, interior house wiring, and other electrical wiring.While these numbers are staggering, steps can be taken to prevent your home from becoming a statistic. The electrical system in your home may need to be repaired or updated. A complete rewire with a new electrical panel can be a big expense, but that pales in comparison to the importance of keeping your home and family safe.Warning signsAn electrical system will often display signs when there are potential problems. If you notice any of these warning signs, have an electrician inspect your electrical system:Frequent blown fuses or tripped breakersAn over-amped or over-fused electrical panelDimming or flickering lights, indicating the circuit is overloaded or has a loose connectionHot or discolored switch plates, cords, or plugsLight bulbs that frequently burn out in a socket, signaling a fixture that can't handle the bulb wattageBuzzing or sizzling soundsA burning smellArcs or sparks from an outlet when you plug or unplug a cordLoose outletsCracked, cut, or broken insulationElectrical shock when you plug in or touch a cordThe Guide to Home Wiring Hazards from the U.S. Consumer Product Safety Commission highlights more warning signs of faulty wiring.Other reasons to check the wiringEven if you don't notice any warning signs of faulty wiring, it's a good idea to have your home's electrical system inspected periodically. Electrical codes vary depending on where you live, but there are common situations that warrant an inspection from a qualified professional.If your home is more than 40 years oldIf you're relying on extension cords for powerIf you've made major home improvements or added major new appliances that could strain your existing systemIf your home has ungrounded, two-prong outletsIf your home has aluminum instead of copper wiringEven when you don't see any of these warning signs, you can't go wrong with an expert electrical system inspection.