Dependable service. Honest rates. Local know-how. D.W. Miller Electrical has been serving homes and businesses in Greenville, South Carolina since 2016, and every job we take on gets the same attention whether it is a single outlet or a full-service panel upgrade. We are locally owned and operated electricians who live and work in this community, and when you call us, you reach someone who knows Greenville County and is ready to help. Work is performed by licensed electricians, and we are available for same-day and emergency service when you need us most.
Seeing flickering lights or a warm outlet? Those are not problems to put off. Electrical issues that seem minor can point to something more serious behind the walls, and getting them diagnosed early is always the safer call. We handle all types of electrical repairs and troubleshooting for homeowners and commercial clients across Greenville County.
We respond to a wide range of electrical problems every week. Some of the most common calls we get include:
We run a full diagnostic to find the root cause, not just the symptom. We stand behind every circuit we touch, and we will not leave a job until the problem is resolved and the work meets code. Reach out and we will get it diagnosed.
A properly wired home is a safer home, and that starts with a panel that can handle the load your household puts on it. Whether you are in a newer build or a decades-old house, we handle everything from breaker repairs to full service upgrades and dedicated circuit installations.
If your breakers are tripping regularly, your panel is running hot, or you are adding significant load to your home, your service panel may need attention. We handle breaker panel repair and full panel replacements, including 200 amp and 400 amp service upgrades. We also install subpanels when a home or commercial space needs capacity in a specific area, and we work through the meter and service-entrance considerations that come with any upgrade. We make sure your panel can handle the load before we close up the job.
Dryers, ovens, refrigerators, and workshop equipment all need their own dedicated circuits to run safely and efficiently. We install dedicated circuits for new appliances and for rooms that need their own protected wiring, including kitchens, bathrooms, garages, basements, and workshops. We also handle whole-home rewiring for older properties, including knob-and-tube wiring replacement and aluminum wiring repair. All wiring work is code-compliant and backed by a workmanship guarantee on every wiring job. Pick up the phone and we will handle the wiring.
Scheduling an electrician should not be complicated. Whether you need a single outlet swapped out or a full lighting upgrade across your home or business, we make the process straightforward and get the work done right.
We install and replace all outlet types, including standard outlets, GFCI outlets, USB outlets, and weatherproof exterior outlets. For switches, we handle everything from basic light switch replacements to dimmer switch installations and smart switch setups. Garage outlets, workshop circuits, and exterior outlets for patios and landscaping are all part of what we do.
We install and replace light fixtures throughout the home, including recessed lighting, under-cabinet lighting, and ceiling fan installation and wiring. Outside, we handle security lighting, motion sensor lights, flood lights, and landscape lighting. If you are remodeling a kitchen, finishing a basement, or building an addition, we wire the lighting as part of the broader project. Commercial lighting upgrades and fixture replacements are also available for offices, retail spaces, and rental properties. We will have your outlets working again in no time.
Most homeowners can't tell a minor wiring issue from a serious one, and that is exactly why having a reliable electrician on call matters. We work with homeowners, landlords, property managers, and commercial clients throughout the Greenville area. Whether you are a new homeowner getting familiar with an older house or a property manager keeping a rental up to code, we handle the electrical side of the job.
When you hire local, you hire people who stand behind the job. We show up on time and ready to wire, and we treat every property with the same care we would give our own. Our residential services include pre-listing electrical inspections for homeowners preparing to sell, whole-home electrical safety inspections, hardwired smoke detector installation, carbon monoxide detector installation, and bathroom exhaust fan wiring. On the commercial side, we serve businesses, offices, apartment buildings, and rental properties across Greenville County. Your panel is in good hands with us.
South Carolina's active storm season, hot summers, and aging housing stock in parts of Greenville County create specific electrical demands that come up again and again. These three services address the most common needs we see in this area.
Many older homes in and around Greenville were built with panels sized for a fraction of today's electrical load. Modern appliances, home offices, and EV chargers all put more demand on a system than those original panels were designed to handle. A 200 amp service upgrade gives a home the capacity it needs, and we include AFCI and GFCI breaker upgrades for code compliance along with proper grounding and bonding as part of the work. If your panel is undersized or outdated, a service upgrade is often the right starting point.
Severe thunderstorms and the occasional ice storm can knock out power across Greenville County for hours or longer. A properly installed standby generator keeps your essential circuits running when the grid goes down. We handle the full electrical side of generator installation, including transfer switch wiring, generator interlock installation, and whole-house generator hookup. We do not sell the generator units themselves, but we wire them to your home's electrical system so you are ready before the next outage season arrives.
Lightning and storm-related power surges are a real risk in this part of South Carolina. A single voltage spike can damage appliances, electronics, and smart home devices throughout the house. Whole-home surge protection installs at the panel and shields every circuit in the home from that kind of event. It is also a natural complement to a panel upgrade, and we often recommend both together for older homes making a full electrical refresh.
Keeping a home safe starts with the wiring behind the walls, but we also handle the specialty electrical work that comes with modern living. We install Level 2 EV chargers and run dedicated circuits sized for home electric vehicle charging. We wire hot tubs and pool pumps to code, handle smart switch and smart home wiring projects, and connect solar panel systems and battery backup setups on the electrical hookup side. If you are adding a shed, finishing an attic, or building an addition, we handle the wiring for those spaces as well.
Fair price every visit. On time every visit. Code-compliant every visit. We know that cost is one of the first things people think about when they call an electrician, and we keep our pricing straightforward. We do not quote one number and charge another. When you call us, we walk through the job with you and give you a clear estimate before any work begins. We are available for same-day service and after-hours calls, and we respond to emergency situations when something cannot wait. Call for a quote and we will tell you exactly what the work involves.
We serve residential and commercial customers throughout Greenville and the surrounding communities in Greenville County. Our service area includes:
If you are nearby and need electrical work, give us a call.
Call (864) 365-3623 and describe what you are working with. We will schedule a time to assess your current panel, wiring, and load, walk you through what the job involves, and give you a clear estimate before any work begins. Larger projects like panel upgrades and rewires are planned carefully so there are no surprises once work starts.
It depends on your panel's current capacity and what load it is already carrying. We perform a load calculation before installing any Level 2 EV charger circuit to confirm the panel can handle the added demand. If it cannot, we discuss a panel upgrade before the charger work begins so the installation is safe and code-compliant from the start.
Connecting a generator directly to your home's wiring without a transfer switch creates a backfeed hazard that can injure utility workers and damage your equipment. A properly installed transfer switch isolates your home from the utility line so the generator carries the load safely. We install manual and automatic transfer switches as part of every generator hookup we do.
Common signs include breakers that trip regularly under normal household use, a panel that feels warm to the touch, lights that dim when large appliances cycle on, and a lack of available breaker slots for new circuits. Older 60-amp and 100-amp panels in Greenville County homes were sized for far lighter loads than today's households demand. If you are adding an EV charger, a home office, or significant new appliances, a service upgrade is often the right starting point.
Both types present safety and reliability concerns when they are aging, improperly modified, or carrying loads they were not designed for. Knob-and-tube wiring lacks a ground conductor and is not compatible with modern grounded outlets or AFCI protection. Aluminum branch circuit wiring can loosen at connections over time, creating heat and fire risk. We assess what is present, explain the risks, and handle targeted replacement or whole-home rewiring depending on the scope of the problem.
A breaker trips to protect a circuit from overload or a fault. If it trips occasionally when you run multiple high-draw appliances at once, the circuit may simply be undersized for the load. If it trips repeatedly on normal use, or if it trips and feels hot or will not reset firmly, that points to a wiring fault, a failing breaker, or a panel issue that needs a proper diagnosis. We trace the cause rather than just resetting the breaker.
Flickering or dimming lights can result from a loose connection at the fixture, a failing breaker, voltage fluctuations on the circuit, or a wiring fault deeper in the system. Occasional dimming when a large appliance starts up is common, but persistent flickering or dimming that affects multiple rooms warrants a diagnostic visit. Left unaddressed, loose connections and wiring faults can become fire hazards.
A buzzing or crackling sound from an outlet or switch, a cover plate that feels warm, visible discoloration or scorch marks, and outlets that spark when you plug something in are all signs that something is wrong at the connection. These symptoms should not be ignored. We diagnose the cause and replace or repair the affected device and any damaged wiring behind it.
For most wiring, outlet, switch, and panel work, yes. We shut off the relevant circuit or the main breaker as needed to work safely. We let you know in advance if a significant portion of the home will be without power during the job and work efficiently to minimize the time you are without it.
Clear access to your breaker panel, the outlets or fixtures being worked on, and any wall space that may need to be opened. If furniture is blocking an outlet or a ceiling fan location, moving it ahead of time speeds the job along. We handle the electrical work; a little clearance on your end helps us get to it faster.
We start with a diagnostic assessment of the problem or project you described. For repairs, we trace the issue to its source before recommending a fix. For installations and upgrades, we do a load calculation and review the existing panel and wiring condition. We explain what we found and what the work involves before any repair or installation begins.
Power restored. Code-compliant. Done right. D.W. Miller Electrical has been the trusted choice for electrical work in Greenville, SC since 2016, and we are ready to take your call today. Whether you need a quick repair or a full panel upgrade, reach out and let us put together a quote for you.
Call (864) 365-3623 to schedule service or request an estimate.
We handle electrical work for homeowners, landlords, and businesses throughout Greenville County, from a single dead outlet to a full panel replacement. The table below covers every service we offer, what each one includes, and who it fits best. If you do not see your situation listed, call us and we will point you in the right direction.
| Service | What's Included | Ideal For | Good to Know |
|---|---|---|---|
| Lighting Installation | recessed and ceiling fixture installation, outdoor and security lighting, motion sensor lights, under-cabinet and accent lighting | homeowners updating a room, finishing a basement, or adding outdoor lighting | We can wire a full lighting plan from scratch for remodels and additions, including permit work when required. |
| Breaker & Fuse Repair | breaker replacement, fuse panel assessment, double-tapped breaker correction, AFCI breaker installation | homes with a breaker that will not hold or a fuse panel that needs attention | A breaker that trips repeatedly is often a sign of an overloaded circuit or a wiring fault, not just a worn breaker. |
| Older-Home Rewiring | knob-and-tube wiring replacement, aluminum branch circuit correction, grounding and bonding upgrades, panel capacity evaluation | owners of established Greenville County homes with wiring that has not been updated in decades | Older wiring was not designed for today's loads. We assess what is there, explain what needs to change, and bring it up to current code. |
| Basement & Sump-Pump Circuits | dedicated sump-pump circuit, basement outlet and lighting wiring, GFCI protection in wet areas | homeowners finishing a basement or adding a sump pump that needs its own protected circuit | A sump pump on a shared circuit can lose power at the worst moment. A dedicated circuit keeps it running independently. |
| EV Charger Installation | Level 2 charger wiring, dedicated 240-volt circuit, panel capacity check, permit coordination | homeowners who want faster, code-compliant EV charging at home | Most Level 2 charger installations require a dedicated 50-amp circuit and a permit. We handle both from start to finish. |
| Wiring & Rewiring | whole-home rewiring, knob-and-tube replacement, aluminum branch circuit wiring correction, targeted old-wiring updates | older homes with wiring that was not designed for today's electrical demand | We bring affected circuits up to current code and document what was replaced so you have a clear record for insurance or resale. |
| Dedicated Appliance Circuits | dryer and range circuits, refrigerator and dishwasher circuits, workshop and garage circuits, 240-volt circuit installation | homeowners adding a major appliance or a workshop that needs its own protected circuit | Major appliances that share a circuit with other loads are more likely to trip breakers. A dedicated circuit solves that reliably. |
| Whole-Home Surge Protection | panel-level surge protector installation, grounding and bonding check, protection for appliances and electronics | any home in South Carolina's storm season where lightning and grid fluctuations are a real risk | Panel-level surge protection intercepts voltage spikes before they reach your circuits. It is one of the most cost-effective upgrades we install. |
| Ceiling Fan Installation | fan installation and replacement, new circuit or switched outlet where needed, wiring in any room type | any room that needs a ceiling fan added, replaced, or properly wired for the first time | Rooms without an existing ceiling box or switched outlet may need a new circuit. We handle that as part of the installation. |
| Wiring for Additions & Remodels | new room circuit installation, kitchen and bathroom wiring, subpanel addition for added load, permit and inspection coordination | homeowners finishing a basement, adding a room, or remodeling a kitchen or bathroom | We do a load calculation before we start so you know exactly what your panel can carry and whether an upgrade is needed. |
| Electrical Repairs & Troubleshooting | dead outlets and switches, breakers that trip repeatedly, flickering or dimming lights, tracing wiring faults to the source | any homeowner or business with an electrical problem that needs a diagnosis | We troubleshoot the cause, not just the symptom. If a breaker keeps tripping, we find out why before resetting it. |
| Electrical Panel UpgradesMost Popular | 200-amp panel upgrades, main panel replacement, service entrance upgrades, subpanel installation | homes with a 60- or 100-amp panel that can no longer carry modern electrical loads | Panel upgrades require a permit and inspection. We handle both, and we walk you through the safety case before any work begins. |
| Outlet & Switch Installation | new outlet installation, GFCI outlet upgrades, outdoor and weatherproof outlets, switch replacement and wiring | homeowners adding outlets, upgrading to GFCI, or replacing switches that stopped responding | GFCI protection is required by code in kitchens, bathrooms, garages, and outdoor areas. We install and test them to spec. |
| Electrical Safety Inspections | full home wiring assessment, pre-sale and pre-purchase inspections, home inspector finding resolution, written documentation of findings | homeowners listing a property, buyers before closing, or anyone who received a concern from a home inspector | Common findings include missing GFCI protection, double-tapped breakers, and outdated wiring. We document what we find and handle the repair work. |
| Backup Generator Installation | transfer switch installation, dedicated generator circuit, panel capacity assessment, portable and standby hookups | Greenville homeowners who want reliable backup power during summer storms or winter ice events | We handle the electrical side only: the transfer switch, the circuit, and the panel load assessment. The generator is ready when the power goes out. |
How do I know if my electrical panel needs to be upgraded?
A few signs point to a panel that is running out of capacity: breakers that trip often under normal use, a panel rated at 60 or 100 amps in a home with modern appliances, a fuse box that was never converted to breakers, or a home inspector who flagged the panel on a recent report. If you are adding an EV charger, a hot tub, or a major appliance and the panel is already close to capacity, an upgrade is worth discussing before the work begins. Call us and we will assess what you have.
Why does my breaker keep tripping?
Repeated tripping usually means one of three things: the circuit is overloaded with more draw than it was designed to carry, there is a wiring fault somewhere on the circuit, or the breaker itself has worn out and is no longer holding correctly. Resetting it without finding the cause just delays the problem. We trace the circuit, find out what is actually happening, and fix it at the source.
Is the electrical work permitted and inspected?
Yes. Jobs that require a permit under South Carolina's electrical code, such as panel upgrades, new circuit installation, and EV charger hookups, are pulled and inspected as a standard part of the job. We handle the permit application and coordinate the inspection. You get a code-compliant installation with a record of the inspection on file.
Same-Day and Emergency Availability
We offer same-day scheduling for most jobs and emergency service when the situation cannot wait. We are available every day from 8:00 AM to 9:30 PM, including weekends.
What do flickering or dimming lights usually mean?
Occasional flickering when a large appliance starts up can be normal, but persistent flickering or lights that dim without explanation often point to a loose connection, an overloaded circuit, or a wiring problem. Flickering that affects multiple rooms or the whole house may indicate a utility issue or a problem at the service entrance. Either way, it is worth having us look at it before the underlying cause gets worse.
Is it safe to have aluminum or knob-and-tube wiring in an older home?
Knob-and-tube wiring and aluminum branch circuit wiring are not automatically dangerous, but both carry risks that modern wiring does not. Knob-and-tube was not designed for today's electrical loads and lacks a ground wire. Aluminum branch circuit wiring can loosen at connections over time and create a fire hazard if not maintained or updated. We assess what is in your home, explain what the actual risk level is, and give you honest options for addressing it.
What does a whole-home surge protector actually do?
A plug-in surge strip protects the single outlet it is plugged into. A panel-level surge protector intercepts voltage spikes at the main panel before they can travel through your circuits and reach your appliances, electronics, and wiring. In South Carolina, where summer storms and lightning strikes are common, panel-level protection covers the whole house in a way that individual strips cannot. We install it at the panel and pair it with proper grounding for complete coverage.
Work Performed by Licensed Electricians
Every job we take on is performed by licensed electricians who know the local code requirements and handle permit work as a standard part of the process.
What does EV charger installation involve?
A Level 2 home charger requires a dedicated 240-volt circuit, typically a 50-amp circuit run from your main panel to the garage or driveway location where you want the charger mounted. We check your panel capacity first to make sure it can carry the added load, pull the required permit, run the circuit, and wire the charger. The whole job usually takes a few hours once the permit is in hand.
Do I need to be home while the work is being done?
For most jobs, yes. We review the scope and pricing with you before anything begins, and we walk you through what was done when we finish. If access to specific areas of the home is needed, such as the panel, attic, or crawl space, someone should be available to let us in and answer questions if something unexpected comes up. For commercial jobs, a property manager or authorized contact on site works fine.
Workmanship We Stand Behind
We back every wiring job with a workmanship guarantee and give you an honest assessment of what the work involves before anything begins.
How does pricing and the estimate process work?
We go over the scope of work with you before any work begins and give you a clear price. If we open a wall or access a panel and find something unexpected, we stop, explain what we found, and get your approval before continuing. You always know the cost before we proceed. Permit fees, when required, are part of the job and not a surprise line item at the end.
Do you offer same-day or emergency electrical service?
Same-day availability is offered for most jobs. When the situation cannot wait, we provide emergency service as well. We operate every day from 8:00 AM to 9:30 PM, including weekends, so you can reach us well into the evening when something urgent comes up. Call (864) 365-3623 and we will let you know how quickly we can get to you.
How do I know if my home is ready for added electrical load?
The short answer is a load calculation. We look at what your panel is rated for, what is already drawing from it, and what the new load will add. If you are adding an EV charger, a hot tub, a major appliance, or finishing a basement with new circuits, we run those numbers before we start so there are no surprises. Sometimes the existing panel can carry it. Sometimes a subpanel or a full upgrade is the right move. We explain the options and let you decide.
Every electrical situation is a little different. Call (864) 365-3623 and we will talk through what you are dealing with and give you a straight answer on what it takes to fix it.
(864) 365-3623