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Electrical answers

Straight answers to common electrical problems.

38 questions we hear every week, answered plainly by master electricians. Search, or jump to a topic.

Written by the master electricians at The Electric Man for homeowners in Aiken and Lexington counties. This is general guidance; every home is different, and when in doubt, turn off the power and call a licensed electrician.

Breakers & panels

Why does my breaker keep tripping?

A breaker trips for one of three reasons: the circuit is overloaded, there is a short circuit, or there is a ground fault. It is a safety device doing its job, not a nuisance.

If it trips when a space heater, hair dryer or window unit kicks on, that is usually an overload, and moving the appliance to another circuit often solves it. If it trips the instant you reset it, or with nothing running, suspect a short or a damaged wire and leave it off. Breakers also wear out, especially in older panels. Never swap in a larger breaker to stop the tripping; the wire is sized for the breaker, and upsizing it is how wires overheat inside walls.

Is it safe to keep resetting a tripped breaker?

Once is fine. If it trips again, stop resetting it.

A repeat trip means the fault is still there. Each reset sends full current into whatever is wrong, whether that is a nicked wire, a melted connection, or a failing appliance. Unplug everything on that circuit, reset once, and add things back one at a time. If it trips with nothing plugged in, the problem is in the wiring or the breaker itself and needs an electrician.

How do I know if my electrical panel needs to be replaced?

Replace or evaluate your panel if it is 25 to 40 years old, full with no open spaces, warm to the touch, showing rust or scorch marks, or is a Federal Pacific, Zinsco, or Challenger panel.

Other signs include breakers that trip for no reason, breakers that will not stay reset, a buzzing sound, frequent use of tandem breakers to squeeze in circuits, or plans to add a big load like a heat pump, EV charger, hot tub or shop. In South Carolina, humidity and heat are hard on panels in garages and outdoor enclosures, so corrosion is a common find. An inspection tells you whether you need a replacement or just a repair.

Do I need to upgrade from 100 amps to 200 amps?

You probably need 200 amps if you are adding central air or a heat pump, an EV charger, a hot tub, a shop, or an addition, or if your 100-amp panel is already full.

Many older homes in Aiken and Lexington counties were built with 100-amp service, which was plenty for gas heat and a window unit but is tight for today's all-electric homes. We start with a load calculation, the method the electrical code uses, to see what your home actually draws. Sometimes the answer is a subpanel or load management rather than a full service upgrade, and we will tell you if that is the case.

Are Federal Pacific or Zinsco panels really dangerous?

Yes. Both are widely documented to have breakers that can fail to trip during an overload or short, which defeats the point of the panel. Many insurers will not write or renew a policy on a home that has one.

If you are buying a home with one of these panels, or you have lived with one for years without trouble, the risk is still there because the problem only shows up when the breaker is asked to trip. Replacement is the fix. It is a one-day job in most homes.

What is the difference between a GFCI and an AFCI?

A GFCI protects people from shock; an AFCI protects the house from fire.

A GFCI (ground-fault circuit interrupter) shuts off power in a fraction of a second when current leaks to ground, such as through a person, which is why code requires them in kitchens, bathrooms, garages, laundry rooms, outdoors, and near water. An AFCI (arc-fault circuit interrupter) detects the arcing that happens at damaged cords and loose connections, a leading cause of electrical fires, and is required on most living-space circuits in newer homes. Dual-function breakers do both.

My GFCI outlet will not reset. What should I do?

First, check that the outlet has power; a GFCI will not reset without it. Look for another GFCI upstream or a tripped breaker.

One GFCI often protects several outlets downstream, including ones in other rooms, the garage, or outside, so a dead bathroom outlet might be fed by a GFCI in another bathroom. If it has power and still will not reset, something on the circuit may be faulting, like water in an outdoor box, or the GFCI itself has reached the end of its life. They do wear out, usually after 10 to 15 years.

Should I put a whole-home surge protector on my panel?

Yes, especially in South Carolina. A whole-home surge protector at the panel is inexpensive insurance for the electronics built into nearly every modern appliance.

The Midlands gets frequent summer lightning, and utility switching creates smaller surges every day that slowly wear out circuit boards in HVAC systems, refrigerators, washers, and TVs. A panel-mounted device stops the big surges at the door, and plug-in surge strips at sensitive electronics handle what is left. The two work together. Ask about our current offer on whole-home surge protection when you book another service.

Outlets, switches & wiring

Why is my outlet or switch warm to the touch?

A warm outlet or switch plate usually means a loose connection, an overloaded device, or a failing dimmer. Treat it as a warning sign.

Dimmers normally run slightly warm, but they should never be hot. A standard outlet or switch should feel room temperature. Heat means resistance, and resistance at a loose terminal can scorch the device and the wire behind it. Unplug what is on it, turn off the breaker if it is hot, and have it checked. Discoloration, a burning smell, or crackling means shut the circuit off now.

Half of my outlets stopped working. What happened?

Usually a tripped GFCI, a tripped breaker, or a loose connection at the last working outlet in the line.

Outlets are wired in a chain, so when one connection fails, everything downstream goes dead. Check every GFCI in the house, including garages, bathrooms, and outdoor outlets, and look for a half-tripped breaker. If none of that brings it back, the break is most often at a push-in (backstab) connection in an outlet box. That is a quick repair for an electrician, and we will usually move the other connections in that run to screw terminals while we are there.

Is it safe to use a three-prong adapter on a two-prong outlet?

Not really. The adapter lets the plug fit but does not give you a ground, so you lose the protection the third prong is supposed to provide.

Two-prong outlets are common in homes built before the 1960s. The proper fixes are running a ground wire to the outlet, or installing a GFCI outlet (labeled 'No Equipment Ground'), which the electrical code allows as a safe replacement. Surge protectors do not work properly without a ground, so computers and TVs need a genuinely grounded outlet.

Why do my outlets spark when I plug something in?

A tiny, brief blue spark when plugging in something that is switched on is normal. A large spark, a pop, a scorch mark, or any spark with nothing running is not.

Worn outlets lose their grip on the plug, which causes arcing, heat, and eventually a melted face. If you see black marks, smell burning plastic, or the plug falls out easily, stop using the outlet and replace it. If the same thing happens at several outlets, the problem may be further up the circuit.

What does it mean if my house has aluminum wiring?

Homes wired with aluminum branch circuits, mostly built in the mid-1960s to mid-1970s, carry a higher fire risk at connections, but the risk can be managed without rewiring the whole house.

Aluminum expands and contracts more than copper and oxidizes at terminals, which loosens connections over time. The accepted repairs are to pigtail each connection to copper using connectors rated for the job, or to use devices rated for aluminum. Look for 'AL' or 'ALUMINUM' printed on the wire jacket in the attic or panel. If you find it, have every connection evaluated.

Can I add outlets to a room without opening up the walls?

Usually, yes. Electricians fish wire through existing walls from the attic or crawlspace, so most new outlets need only a small hole at the box location.

Many older homes in the area have just one or two outlets per room, which leads to extension cords and overloaded power strips. Adding outlets is safer and often cheaper than people expect. Plaster walls, exterior walls with insulation, and slab foundations take more planning, but they can usually be done with minimal patching.

Should I get my house rewired?

Consider rewiring if you have knob-and-tube wiring, deteriorating cloth-insulated wire, ungrounded circuits throughout, or wiring that has been heavily modified over the years.

A full rewire is not always necessary. We often find that the main circuits are sound and only certain rooms, add-ons, or DIY work need replacing. An evaluation looks at insulation condition, grounding, overloaded circuits, and connection quality, then lets you prioritize. Partial rewiring spread out over time is a common and sensible approach.

Lights, flicker & power quality

Why do my lights flicker?

If one fixture flickers, it is usually the bulb, a loose bulb, or an incompatible dimmer. If lights flicker across the house, it can point to a loose connection in the panel or at the service, and that should be checked promptly.

LED bulbs flicker on older dimmers that were designed for incandescent loads, and replacing the dimmer with an LED-rated one usually fixes it. Lights that dim for a second when the AC or a well pump starts can be normal, but if the dip is large or getting worse, it may mean an undersized or loose service connection. Flickering on multiple circuits, or flicker combined with buzzing or burning smells, needs an electrician soon.

Why do my lights dim when the air conditioner kicks on?

A brief dip when a big motor starts is common; a noticeable, long dip is not.

Compressors pull a surge of current for a moment at startup. On a healthy service, lights barely react. If they dim hard or stay dim, possible causes include a loose neutral or service connection, an undersized service, or a failing start capacitor in the AC unit. A loose neutral can also cause some lights to get brighter while others dim, which is a sign to call right away because it can damage appliances.

Why do my LED bulbs burn out so quickly?

LEDs usually fail early because of heat, incompatible dimmers, or voltage problems, not because the bulb was bad.

Enclosed fixtures trap heat, which shortens the life of the bulb's electronics, so use bulbs rated for enclosed fixtures. Dimmers that are not LED-compatible stress the driver. If bulbs are failing all over the house, or several at once, have the voltage checked, because a loose neutral or utility issue can push voltage too high.

Why is there a buzzing sound coming from my light switch or panel?

Dimmers often hum slightly. Buzzing from a regular switch, an outlet, or the panel usually means a loose connection or a failing breaker and should be checked.

Electricity is silent when connections are tight. A buzz, crackle, or sizzle means current is jumping across a gap, which creates heat. If the buzzing comes from the panel, feel the panel cover with the back of your hand; if it is warm, call an electrician the same day.

How much outdoor and security lighting do I need?

Most homes are well covered with lighting at each entry door, the driveway and garage, and motion-activated floodlights at dark corners and the back yard.

The goal is to remove the places someone could stand unseen without lighting up your neighbors' bedrooms. Motion sensors and dusk-to-dawn controls keep costs down. Landscape lighting on paths and steps adds safety and curb appeal. All outdoor lighting should be on GFCI-protected circuits with fixtures rated for wet locations, which matters in our humidity.

Storms, surges & generators

What should I do if my power goes out?

Check whether your neighbors have power. If they do, the problem is in your home; if they do not, it is the utility.

If the whole street is out, report it to Dominion Energy, Aiken Electric Cooperative, or Mid-Carolina Electric Cooperative, whichever serves you. If only your home is out, check the main breaker and look for tripped breakers. If half the house is out, or lights are unusually bright or dim, that can be a lost leg of power or a loose neutral, and you should turn off sensitive electronics and call an electrician or your utility. Never touch a downed line, and treat any fallen wire as live.

What size generator do I need for my home?

It depends on what you want running. Keeping essentials on, like the fridge, some lights, outlets, the well pump and a gas furnace fan, can take 7,000 to 10,000 watts. Running central air and the whole house usually takes a 20 to 26 kW standby unit.

The expensive mistake is buying too small and discovering the AC will not start, or buying far too big. We do a load calculation, account for motor starting loads like AC compressors and well pumps, and match the generator and transfer switch to how you actually want to live during an outage.

Can I plug my portable generator into a dryer outlet?

No. Back-feeding a house through an outlet with a double-male cord is illegal and can kill a line worker or a neighbor.

Without a transfer switch or interlock, power flows backward from your generator through the service into utility lines, where it is stepped up to thousands of volts. It can also start a fire when utility power returns. A code-approved generator inlet with an interlock kit or transfer switch is an affordable, safe way to run your panel from a portable generator.

Should I get a standby generator or a portable one?

A standby generator is the right choice if you need power automatically, have medical equipment, work from home, or want the whole house covered. A portable generator with an inlet is the budget-friendly option if you are comfortable wheeling it out and starting it yourself.

Standby units run on natural gas or propane, start themselves within seconds, and test themselves weekly. Portables need fuel storage, must run well away from the house to avoid carbon monoxide, and power only selected circuits. Both need to be connected through a transfer switch or interlock.

Did lightning damage my electrical system?

If you had a nearby strike, look for tripped breakers, dead outlets, GFCIs that will not reset, burned electronics, or a burning smell. Any of those means an inspection is worthwhile.

Lightning does not need to hit your house to cause damage. A strike on a nearby pole or tree can send a surge through the service, phone, cable, and irrigation wiring. Damage is often invisible, like weakened insulation or a damaged breaker. For insurance claims, an electrician's written report on what was damaged helps.

How should I prepare my home electrically for hurricane season?

Install whole-home surge protection, get a safe way to connect a generator, and know where your main breaker is.

Inland South Carolina still gets hit hard by hurricane remnants, with wind, falling trees, and multi-day outages. Before the season, test your generator, make sure outdoor outlets and fixtures are GFCI-protected and sealed, trim trees near the service drop, and keep a flashlight near the panel. After a storm, do not operate anything that has been flooded, and have any submerged wiring, outlets, or panels inspected before turning power back on.

Safety & warning signs

I smell burning plastic but cannot find the source. What should I do?

Treat it as an emergency. If you can identify the room or circuit, turn off that breaker. If you cannot, turn off the main breaker and call an electrician. If you see smoke or flames, get out and call 911.

A burning plastic or fishy smell is a classic sign of overheating wiring or a failing device. Check outlets, switches, light fixtures, and the panel for heat or discoloration, but do not open anything up. We offer emergency service for exactly this kind of situation.

When is an electrical problem an emergency?

Call right away for burning smells, smoke, sparks, scorch marks, a hot panel or outlet, a partial power loss, buzzing from the panel, water near electrical equipment, or a shock from any fixture or appliance.

These all point to active heat or current going where it should not. Most other issues, like a dead outlet, a light that will not come on, or a breaker that tripped once and reset, can wait for a normal appointment. When in doubt, call us and describe what you are seeing; we will tell you honestly whether it can wait.

I got a small shock from an appliance or faucet. Is that serious?

Yes. Any shock from an appliance, fixture, or plumbing means current is flowing somewhere it should not. Stop using it and have it checked.

Causes include a failing appliance, missing or broken grounding, a damaged cord, or a problem with bonding. A tingle from a faucet or tub can point to a bonding issue or a loose neutral, which can affect the whole house. Unplug the appliance or shut off the circuit until it is fixed.

How often should smoke and carbon monoxide detectors be replaced?

Replace smoke alarms every 10 years and CO alarms every 7 to 10 years, depending on the model. Test them monthly.

Every detector has a manufacture date on the back. Newer homes should have hardwired, interconnected alarms so that when one sounds, they all sound. Put smoke alarms in every bedroom, outside sleeping areas, and on every level. Put CO alarms on every level and near sleeping areas if you have gas appliances, an attached garage, or a fireplace.

What should I know about electrical systems when buying an older home?

Look at the panel brand and age, the service size, whether outlets are grounded, and whether there is any knob-and-tube, cloth-insulated, or aluminum wiring.

Home inspectors flag obvious issues, but they do not open the panel as thoroughly or test circuits like an electrician does. For older homes in historic Aiken neighborhoods and the older parts of West Columbia and Cayce, a dedicated electrical inspection before closing can give you real repair costs to negotiate with. Common findings include double-tapped breakers, missing GFCI protection, and amateur additions.

Upgrades, costs & working with us

What do I need to install an EV charger at home?

Most home Level 2 chargers need a dedicated 240-volt circuit, typically 40 to 60 amps, plus enough spare capacity in your panel to carry it.

We check your panel's capacity with a load calculation, recommend the right circuit size for your vehicle and charger, and run the circuit to the garage or driveway. If your panel is full or your service is small, a load management device can sometimes avoid a full upgrade. Many drivers are fine with a 240-volt outlet; others prefer a hardwired wall charger.

Do I need a permit for electrical work?

Most electrical work beyond simple like-for-like replacements needs a permit, including new circuits, panels, service upgrades, generators, and remodel wiring.

Permits protect you. An inspector reviews the work, and permitted work keeps insurance and resale clean. We pull the permits for the work we do in Aiken County, Lexington County, and the cities within them, and we schedule the inspections.

How much does an electrician cost?

Costs depend on the job, but you should always get the price before the work starts. With us, you do.

Small repairs are usually priced as a single visit. Larger jobs like panel upgrades, generators, and remodel wiring are quoted as a flat price after we see the site, so you know the total up front. Be cautious of prices that seem very low for panel or service work; they often skip permits, surge protection, or proper grounding.

What does your lifetime warranty cover?

Our lifetime warranty covers the residential electrical installation work we perform.

It covers our workmanship on wiring and installations we put in. Like any warranty, it does not cover problems caused by others, preexisting conditions, storms, or normal wear, and manufacturer products such as generators, panels, surge devices, fixtures, and detectors carry their own manufacturer warranties. We are happy to walk you through exactly what applies to your job before we start.

Do you work on commercial properties?

Yes. We serve offices, salons, retail shops, churches, and other commercial spaces, as well as homes.

Commercial work includes tenant build-outs, additions, lighting upgrades, parking lot and sign lighting, electric gates, and repairs. We schedule around your business hours whenever we can.

How do I get an estimate?

Call us at (803) 989-3337 or send a request through the contact page. Tell us what is going on, and we will set up a time.

Photos of the panel, the problem area, or the space you are planning help us come prepared. For urgent issues like burning smells, sparking, or power loss, call rather than filling out the form.

Lights out? Breaker won’t hold? Planning a project?

Make us your electrician.

Call 803.989.3337