Warning signs of wiring problems
Wiring hidden in walls and ceilings can work for decades, but age, overloading, damage and poor workmanship eventually show. Call an electrician if you notice:
- Outlets or switch plates that are warm to the touch, discolored, or that smell like burning plastic.
- Flickering or dimming lights when appliances start, especially if it happens throughout the house rather than on one fixture.
- Breakers that trip repeatedly on the same circuit, or fuses that blow.
- Buzzing, crackling or sizzling sounds from outlets, switches or the panel.
- Shocks or tingles when you touch an appliance, faucet or switch.
- Outlets that no longer hold a plug firmly, which can cause arcing.
- Two-prong outlets throughout the house, which usually mean there is no equipment ground.
If you smell burning or see smoke from an outlet or panel, switch off the circuit or the main breaker if you can do so safely, leave the area, and call 911 if there is any sign of fire.
Older homes and rewiring
Homes built many decades ago may have wiring that was fine for their time but not for today's loads: knob-and-tube wiring, cloth-insulated cable, or ungrounded circuits. Some homes from the 1960s and 1970s have aluminum branch-circuit wiring, which needs specific connectors and devices to be safe. None of these automatically means the whole house must be rewired, but each deserves an evaluation by an electrician who can tell you which circuits are safe, which need attention, and what the options cost.
Full rewiring is a large project that involves opening walls and ceilings in places. Partial rewiring of the highest-risk circuits, or adding new circuits for kitchens, bathrooms and laundry while leaving the rest, is sometimes a sensible middle path. Ask the electrician to explain the trade-offs.
Adding circuits and outlets
New appliances, home offices, EV chargers, heat pumps and kitchen remodels often need new circuits. Plugging more and more into existing circuits with power strips is a common cause of overheating. An electrician can calculate the load on your panel and tell you whether there is capacity for new circuits or whether a panel upgrade is needed.
Modern codes require ground-fault (GFCI) protection in wet locations such as bathrooms, kitchens, laundry areas, garages and outdoors, and arc-fault (AFCI) protection on many living-space circuits. When you add or modify circuits, the electrician should bring the new work up to current code.
Lighting
Replacing light fixtures, adding recessed lighting, installing dimmers and adding exterior lighting are common jobs. Recessed lights in insulated ceilings must be rated for contact with insulation, and fixtures in damp or wet locations need the right rating. Ask what fixtures the electrician recommends and whether they'll seal fixtures that penetrate the ceiling into an attic.
Permits
Most new wiring, new circuits, panel work and service changes require an electrical permit and inspection. Permitted work protects you when you sell the house and helps catch mistakes. Ask who pulls the permit and whether it's included in the price.
What to expect from a visit
1. A description of the problem from you, and questions about when it happens. 2. Testing at outlets, switches and the panel to locate the fault. 3. A clear explanation of what's wrong and the options for fixing it. 4. A written price before work starts. 5. Cleanup, and a note of anything else they noticed that you should know about.
Questions to ask
- What did you find, and is it a safety issue now?
- Does this repair bring the circuit up to current code?
- Is a permit needed, and is it included?
- Will you patch any holes you make in walls or ceilings, or should I plan for that?
- Do you guarantee the work, and for how long?