About This Service
Understanding Faulty Wiring in Homes and Businesses
Faulty wiring is one of the most dangerous and underestimated hazards in any building. Because the majority of your electrical wiring runs invisibly inside walls, ceilings, and underground conduits, problems often develop silently for months or years before any visible symptom appears. By the time you notice flickering lights, warm outlet covers, or a burning smell, the fault may already have caused significant hidden damage or created a genuine fire risk.
At Nova Electrical Services, we have repaired wiring faults across hundreds of Markham, IL properties over the past 15 years. Our technicians are trained to diagnose both interior wiring issues, such as damaged Romex, loose junction box connections, and improperly spliced conductors, and exterior wiring problems, including weathered service entrance cables, damaged conduit runs, corroded outdoor outlet circuits, and deteriorated landscape or pool wiring. No matter where the fault originates, we have the tools and expertise to find it and fix it correctly.
🟢 Warning signs of faulty wiring include lights that flicker without explanation, outlets that feel warm or produce a burning smell, breakers that trip frequently, and switches that spark when operated. If you notice any of these in your Markham, IL property, call Nova Electrical Services at 1 (855) 782-4959 right away.
Interior Wiring Faults We Repair
Interior wiring problems span a wide range of issues. Older homes in Markham, IL often have wiring installed decades ago that no longer meets current safety standards. Knob-and-tube wiring from the early 1900s, aluminum branch circuit wiring from the 1960s and 1970s, and two-prong ungrounded systems all present hazards that modern life amplifies because contemporary appliances draw far more current than those older systems were designed to handle.
Common interior faults we address include overloaded circuits where too many devices share a single breaker, undersized wire gauges that overheat under normal loads, improperly terminated connections in junction boxes and panel lugs, chewed or rodent-damaged insulation inside attic and crawlspace runs, and degraded wiring behind older appliances. We also repair wiring damaged during renovations where contractors nicked or cut conductors while working in walls.
Exterior Wiring Faults We Repair
Exterior wiring faces threats that interior wiring does not: UV exposure, temperature extremes, moisture infiltration, physical impact, and wildlife. Service entrance cables that run from the utility pole or underground service to your meter base are particularly vulnerable to cracking and degradation over time. Outdoor circuits serving HVAC equipment, pool pumps, landscape lighting, and exterior outlets are frequently subjected to water ingress and corrosion that interior circuits never experience.
Our exterior wiring repairs cover service entrance cable replacement, weatherhead repairs, conduit restoration and replacement, outdoor outlet and junction box repair, low-voltage landscape wire faults, and irrigation system wiring failures. We use UV-resistant, weather-rated materials on all exterior work to ensure lasting performance even in the variable climate of Markham, IL.
Types of Wiring Faults We Diagnose and Repair
Wire runs carrying more current than their ampacity rating, creating persistent heat buildup.
Loose wire terminals and splice points that generate dangerous electrical arcing.
Flood, roof leak, or condensation damage to insulation and conductors.
Attic and crawlspace conductors with insulation removed by pest activity.
Conductors too small for the circuit load they serve, leading to overheating.
Cracked, brittle exterior wiring insulation exposing bare conductors.
Junction box connections made with wrong connectors or missing ground continuity.
Thermal imaging and wire tracing to pinpoint faults inside walls without demolition.